AlgoVoi Platform Adapters

June 7, 2026 · View on GitHub

AlgoVoi is available for acquisition — docs.algovoi.co.uk/acquisition

AlgoVoi Platform Adapters

Drop-in payment adapters for connecting e-commerce platforms, AI agent frameworks, and automation tools to AlgoVoi — a compliance-aware crypto payment gateway with native stablecoin support across seven blockchains.

What is AlgoVoi?

AlgoVoi is compliance-aware payment infrastructure for stablecoin settlement. The same gateway that handles payment routing across seven chains also runs continuous sanctions screening, KYB gating, and a write-once SHA-256 audit chain on every payment — so merchants and autonomous agents don't quietly carry UK MLRs / OFAC / SAMLA exposure they didn't sign up for. Compliance posture is published live at /compliance/attestation.

The compliance perimeter is the product. Multi-chain breadth (Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo) and protocol coverage (x402, MPP, AP2, A2A) are how we deliver it on a single endpoint, without merchants having to manage wallets or blockchain integrations directly.

Supported settlement assets:

Asset	Network	Details
USDC	Algorand mainnet	Native ASA (ASA ID 31566704), issued by Circle
aUSDC	VOI mainnet	Native ASA (ASA ID 302190), Aramid-bridged USDC
USDC	Hedera mainnet	HTS token 0.0.456858, issued by Circle
USDC	Stellar mainnet	Credit asset issued by Circle (`GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN`); receiver must have a trust line before accepting
USDC	Base mainnet	ERC-20 token (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`), issued by Circle
USDC	Solana mainnet	SPL token (`EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v`), issued by Circle
USDCe	Tempo mainnet	TIP-20 token (`0x20c000000000000000000000b9537d11c60e8b50`, 6 decimals); Tempo is a Stripe/Paradigm EVM L1 (chain ID 4217) with USDC as the native gas token
ALGO / VOI / HBAR / XLM / ETH / SOL	Any mainnet	Native coin payments also supported on every chain (6/6/8/7/18/9 decimals respectively)

What is this repository?

This repository contains production-ready payment adapters and integration documentation for connecting e-commerce platforms, custom applications, and AI agent services to AlgoVoi Tenant Services.

Included:

Recurring / standing-authority subscriptions (Recurr/) — Tier 2 lets a customer sign ONCE and AlgoVoi auto-pulls per cycle on all 7 chains (Algorand SpendingCapVault, EVM ERC-20 approve, Solana SPL Approve, Hedera HTS allowance, Stellar Soroban auth_entry, VOI). Per-chain wallet-side reference flows + chain-agnostic merchant-side examples. native-python/algovoi.py v1.2.0+ ships the merchant HTTP wrappers (8 lifecycle methods)
Drop-in plugins for WooCommerce, OpenCart, PrestaShop, and Shopware (tested and deployed)
CMS payment gateways for Drupal Commerce, Easy Digital Downloads (WordPress), and Ghost — all Comet-validated 2026-04-15
Native adapters for PHP, Python, Go, Rust, and TypeScript (zero external dependencies) — all at v1.2.0 with full Tier 2 (recurring) surface
Agent protocol middleware for MPP and AP2 (gate APIs behind payment challenges)
AI platform adapters for OpenAI, Claude, Gemini, Bedrock, Cohere, xAI/Grok, and Mistral (MPP + AP2 + x402, all 7 chains)
AI agent framework adapters for LangChain, LlamaIndex, CrewAI, Hugging Face, AutoGen, Semantic Kernel, Pydantic AI, DSPy, Vercel AI SDK, Google A2A, LangGraph, and Agno — gate LLM-agnostic pipelines, RAG chains, multi-agent crews, and autonomous agents (MPP + AP2 + x402, all 7 chains)
No-code / automation adapters for Zapier, Make (Integromat), n8n, and X (Twitter) — drop-in Python classes that bridge AlgoVoi payment flows into any no-code workflow, with webhook verification, MPP + x402 + AP2 challenge generation, and all 28 networks; the X adapter auto-posts payment confirmations and checkout links to X via webhook (OAuth 1.0a, stdlib-only, 4-chain mainnet verified 2026-04-18)
MCP server (@algovoi/mcp-server / algovoi-mcp) — exposes 13 AlgoVoi tools natively inside Claude Desktop, Claude Code, Cursor, and Windsurf via the Model Context Protocol
x402 embeddable widget for any HTML page (Cloudflare Pages)
Integration guides and Python adapters for 45+ platforms — all end-to-end tested on api.algovoi.co.uk across all 7 chains

AlgoVoi Cloud — No-Code Dashboard

The fastest way to accept stablecoin payments — no server access or code required. dash.algovoi.co.uk is the hosted SaaS version of AlgoVoi: sign up with your email, verify your identity, and connect your platforms through a guided dashboard wizard. Each wizard takes under 5 minutes.

Go to dash.algovoi.co.uk/signup
Enter your email and choose your account type (Individual, Sole Trader, or Company)
Your AlgoVoi API key is shown once on screen — copy it immediately
Complete KYC/KYB verification in the dashboard to unlock mainnet payments

Supported chains: Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo

Connect a platform

After signing in, open Connect from the sidebar. Every integration has a setup badge:

Badge	Meaning
⚡ 1-click	Connect through an existing account — no downloads
🔧 Upload	Download a zip and upload through your platform's admin UI
⌨️ CLI	Requires shell access — run commands on your server

E-commerce

Platform	Setup	Notes
WooCommerce	🔧 Upload	WordPress + WooCommerce
Magento 2	⌨️ CLI	Adobe Commerce / Magento Open Source
PrestaShop	🔧 Upload	PrestaShop 8.x — hosted + wallet checkout
OpenCart	🔧 Upload	OpenCart 4 payment extension
Shopware	🔧 Upload	Shopware 6 payment plugin
Gravity Forms	🔧 Upload	WordPress form builder with payments
GiveWP	🔧 Upload	WordPress donation & fundraising plugin
Shopify	—	Coming soon (OAuth app install)

Automation

Platform	Setup	Notes
Zapier	⚡ 1-click	Connect 6,000+ apps via Zaps
n8n	⚡ 1-click	Open-source workflow automation
Make (Integromat)	⚡ 1-click	Visual automation platform
Pabbly Connect	⚡ 1-click	Affordable automation for 1,000+ apps
Activepieces	⚡ 1-click	Open-source automation (self-host or cloud)
X (Twitter)	⌨️ CLI	Auto-post tweets on payment confirmation

Messaging Bots

Platform	Setup	Notes
X (Twitter) Bot	⚡ 1-click	Customers tweet `pay £X` → hosted USDC checkout link auto-replied
Telegram Bot	⚡ 1-click	Payment-confirmed reply after Telegram-initiated checkout
Viber Bot	⚡ 1-click	Viber webhook — payment links and confirmations via Viber messages

AI Assistants

Platform	Setup	Notes
Claude / Cursor / Windsurf	⚡ 1-click	AlgoVoi MCP server — 13 payment tools inside your AI assistant

KYC / KYB verification

Before your first mainnet payment, upload the required documents through the Onboarding page:

Account type	Required documents
Individual	Government ID, Selfie, Proof of Address, Source of Funds
Sole Trader	Same as Individual
Company	Certificate of Incorporation, Director ID, Beneficial Owner Register, Memorandum of Association, plus director personal docs

Accepted formats: PDF, JPEG, PNG, WebP — max 50 MB per file. The dashboard auto-advances to active status when all required documents are collected.

Repository structure

platform-adapters/
├── Recurr/               # Tier 2 — standing-authority recurring payments (per-chain
│                         #          wallet-side flows + chain-agnostic merchant examples).
│                         #          Lives alongside the language adapters which carry
│                         #          the merchant HTTP wrappers (native-python v1.2.0+).
├── woocommerce/          # WooCommerce plugin (single PHP file)
├── opencart/             # OpenCart 4 extensions (hosted + wallet)
├── prestashop/           # PrestaShop 8 modules (hosted + wallet)
├── shopware/             # Shopware 6 plugin (Symfony handlers)
├── native-php/           # Framework-free PHP adapter
├── native-python/        # Stdlib-only Python adapter
├── native-go/            # Stdlib-only Go package
├── native-rust/          # Zero-crate Rust library
├── native-typescript/    # Single-file TS adapter (Node 18+/Bun/Deno/browsers/Edge)
├── magento2/             # Magento 2 / Adobe Commerce module (PHP)
├── amazon-mws/           # Amazon SP-API webhook adapter (Python)
├── tiktok-shop/          # TikTok Shop Open Platform adapter (Python)
├── squarespace/          # Squarespace Commerce webhook adapter (Python)
├── wix/                  # Wix Payment Provider SPI (Velo)
├── mpp-adapter/          # MPP server middleware (Python)
├── ap2-adapter/          # AP2 server middleware (Python)
├── shopify-app/          # Private — Shopify payment app (Cloudflare Pages, not distributed)
├── x402-widget/          # Embeddable payment widget (Web Component)
│
│   — Live-tested Python webhook adapters (4 original chains verified 2026-04-14; Base + Solana added 2026-04-22/23; Tempo added 2026-04-23) —
├── allegro/              # Allegro marketplace (Poland / CEE)
├── bigcommerce/          # BigCommerce webhook adapter (partial — see note)
├── bolcom/               # Bol.com (Netherlands / Belgium)
├── cdiscount/            # Cdiscount (France / Belgium)
├── cex/                  # CeX (webstore operator bypass)
├── discord/              # Discord interactions payment adapter (Ed25519 — needs real app keypair)
├── ebay/                 # eBay Platform Notifications adapter
├── ecwid/                # Ecwid / Lightspeed E-Series adapter
├── etsy/                 # Etsy webhook adapter
├── faire/                # Faire B2B wholesale adapter (docs only — API approval required)
├── flipkart/             # Flipkart Seller API adapter (India)
├── freshbooks/           # FreshBooks invoice payment adapter
├── instagram-shops/      # Instagram & Facebook Shops adapter
├── jumia/                # Jumia seller adapter (docs only — no webhook endpoint)
├── lazada/               # Lazada open platform adapter (SE Asia)
├── mercadolibre/         # Mercado Libre adapter (Latin America)
├── myob/                 # MYOB AccountRight poll-based adapter
├── onbuy/                # OnBuy marketplace adapter (UK)
├── printful/             # Printful print-on-demand adapter
├── printify/             # Printify print-on-demand adapter (docs only — no webhook endpoint)
├── quickbooks-online/    # QuickBooks Online invoice adapter
├── rakuten/              # Rakuten marketplace adapter
├── sage-business-cloud/  # Sage Business Cloud invoice adapter
├── shopee/               # Shopee open platform adapter (SE Asia)
├── telegram/             # Telegram Bot payment adapter
├── tokopedia/            # Tokopedia seller adapter (Indonesia)
├── truelayer/            # TrueLayer open banking adapter (ES512 — needs real signing key)
├── walmart/              # Walmart Marketplace adapter
├── wave/                 # Wave Accounting invoice adapter
├── whatsapp/             # WhatsApp Business API adapter
├── wormhole/             # Wormhole cross-chain bridge adapter
├── x402-ai-agents/       # x402 autonomous AI agent payment adapter
├── ai-adapters/
│   ├── openai/           # Payment-gated OpenAI / compatible API wrappers (MPP + AP2 + x402)
│   ├── claude/           # Payment-gated Anthropic Claude wrappers (MPP + AP2 + x402)
│   ├── gemini/           # Payment-gated Google Gemini wrappers (MPP + AP2 + x402)
│   ├── bedrock/          # Payment-gated Amazon Bedrock Converse API wrappers (MPP + AP2 + x402)
│   ├── cohere/           # Payment-gated Cohere ClientV2 wrappers (MPP + AP2 + x402)
│   ├── xai/              # Payment-gated xAI Grok wrappers (MPP + AP2 + x402)
│   └── mistral/          # Payment-gated Mistral AI wrappers (MPP + AP2 + x402)
├── ai-agent-frameworks/
│   ├── langchain/        # LangChain gate — any ChatModel, LCEL chain, RAG pipeline, or ReAct agent
│   ├── llamaindex/       # LlamaIndex gate — QueryEngine, ChatEngine, RAG pipeline, or ReAct agent
│   ├── crewai/           # CrewAI gate — crew.kickoff() + BaseTool for multi-agent crews
│   ├── huggingface/      # Hugging Face gate — InferenceClient, transformers pipeline, smolagents tool
│   ├── autogen/          # AutoGen gate — initiate_chat() + callable tool (0.2.x + 0.4.x)
│   ├── semantic-kernel/  # Semantic Kernel gate — chat completion, KernelFunction, SK plugin
│   ├── pydantic-ai/      # Pydantic AI gate — any Agent, deps injection, provider:model strings
│   ├── dspy/             # DSPy gate — any Predict / ChainOfThought / ReAct / compiled program
│   ├── vercel-ai-sdk/    # Vercel AI SDK gate — generateText, streamText, tool() — TypeScript
│   ├── a2a/              # Google A2A gate — A2A v1.0 REST (6 routes), agent card + extended card, task store
│   ├── langgraph/        # LangGraph gate — StateGraph invoke/stream, ToolNode, create_react_agent
│   └── agno/             # Agno gate — pre_hooks, ASGI middleware (AgentOS), run_agent + arun_agent
├── no-code/              # No-code / automation adapters (Zapier, Make, n8n, X) — v1.0.0, 225+ tests
│   ├── zapier/           #   AlgoVoiZapier — ZapierActionResult, webhook bridge, action handlers
│   ├── make/             #   AlgoVoiMake — Make bundle dict, module handlers
│   ├── n8n/              #   AlgoVoiN8n — n8n item dict, operation handlers
│   └── x/                #   AlgoVoiX — X (Twitter) webhook adapter; auto-posts payment confirmations &amp; checkout links via OAuth 1.0a
├── mcp-server/           # MCP server — 13 AlgoVoi tools for Claude Desktop / Claude Code / Cursor / Windsurf
│   ├── typescript/       #   @algovoi/mcp-server (npm) — `npx -y @algovoi/mcp-server`
│   └── python/           #   algovoi-mcp (PyPI) — `uvx algovoi-mcp`
├── drupal-commerce/      # Drupal 10/11 + Commerce 2/3 payment gateway module
├── easy-digital-downloads/ # EDD 3.2+ WordPress plugin (digital downloads, licensing)
├── ghost/                # Ghost 5.x paid-membership grant-on-payment adapter
├── xero/                 # Xero invoice payment adapter
├── yapily/               # Yapily open banking adapter
├── zoho-books/           # Zoho Books invoice adapter
│
├── {platform}.md         # Integration guides (45+ platforms)
└── README.md

Live-tested adapters

The following adapters have been end-to-end tested against a live AlgoVoi tenant on algorand_mainnet, voi_mainnet, hedera_mainnet, stellar_mainnet, base_mainnet, and solana_mainnet:

Platform	Demo store / notes	Hosted chains	Extension chains
OpenCart 4	your-domain.example	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	Algorand, VOI
PrestaShop 8.2.5	your-domain.example	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	Algorand, VOI
Shopware 6.7.8.2	your-domain.example	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	Algorand, VOI
WooCommerce 10.6.2 / WordPress 6.9.4	your-domain.example	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	Algorand, VOI
Shopify (Cloudflare Pages)	algovoi-3.myshopify.com	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Magento 2 / Adobe Commerce	—	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Amazon SP-API	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
TikTok Shop	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Squarespace	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Wix eCommerce	— (SPI checkout)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Native PHP	—	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	Algorand, VOI
Native Python	—	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	Algorand, VOI
Native Go	—	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	Algorand, VOI
Native Rust	—	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	Algorand, VOI
AlgoVoi 1.0	api.algovoi.co.uk/shop-demo	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	Algorand, VOI
QuickBooks Online	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Xero	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
FreshBooks	— (B2B webhook, form-urlencoded + fetch_order)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Sage Business Cloud	— (polling, no push webhooks)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Zoho Books	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Wave	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
MYOB	— (polling, no push webhooks)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
eBay	— (Platform Notifications webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Ecwid / Lightspeed E-Series	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Etsy	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Rakuten Ichiba	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
OnBuy	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Yapily	— (open banking webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Walmart Marketplace	— (B2B webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
CeX	— (operator bypass webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Printful	— (print-on-demand webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Wormhole	— (cross-chain bridge webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
WhatsApp Business	— (Meta webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Instagram Shops	— (Meta webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Telegram	— (Bot API webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Allegro	— (marketplace webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Bol.com	— (marketplace webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Cdiscount	— (marketplace webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Flipkart	— (Seller API webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Lazada	— (open platform webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Mercado Libre	— (marketplace webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Shopee	— (open platform webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Tokopedia	— (marketplace webhook)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
x402 AI Agent adapter	— (x402 spec v1: `accepts` array, CAIP-2 networks, microunit amounts, `payload.signature` proof)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
MPP Gate	— (100% IETF `draft-ryan-httpauth-payment`: challenge echo, CAIP-2 routing, HMAC IDs, on-chain verification — v2.1.0, 153/153 tests, live smoke-tested all 4 original chains 13 Apr 2026; Base + Solana added 2026-04-22/23; Tempo added 2026-04-23)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
AP2 Gate	— (payment request + local ed25519 verification)	Algorand, VOI	—
LangChain (AI agent frameworks)	— (MPP + AP2 + x402; gates any ChatModel, LCEL chain, RAG pipeline, or ReAct agent tool — 76/77 tests, Phase 1+2 PASS 5/5 chains 16 Apr 2026, Comet-validated)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
LlamaIndex (AI agent frameworks)	— (MPP + AP2 + x402; gates LlamaIndex LLM, QueryEngine, ChatEngine, or ReAct agent tool — 80/80 tests, Comet-validated 16 Apr 2026)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
CrewAI (AI agent frameworks)	— (MPP + AP2 + x402; gates crew.kickoff() + BaseTool with PaymentToolInput args_schema — 68/68 tests, Comet-validated 16 Apr 2026)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Hugging Face (AI agent frameworks)	— (MPP + AP2 + x402; gates InferenceClient.chat_completion(), transformers pipeline, and smolagents Tool — 83/83 tests, 16 Apr 2026)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
AutoGen (AI agent frameworks)	— (MPP + AP2 + x402; gates initiate_chat() + callable FunctionTool-compatible tool; llm_config property; 0.2.x + 0.4.x — 86/86 tests, 16 Apr 2026)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Semantic Kernel (AI agent frameworks)	— (MPP + AP2 + x402; gates chat completion, kernel.invoke(), and @kernel_function plugin; asyncio.run() sync wrappers — 76/76 tests, 16 Apr 2026)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Pydantic AI (AI agent frameworks)	— (MPP + AP2 + x402; gates any Agent with deps injection, all provider:model strings, pydantic_ai.tools.Tool-compatible — 77/77 tests, 16 Apr 2026)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
DSPy (AI agent frameworks)	— (MPP + AP2 + x402; gates any Predict / ChainOfThought / ReAct / compiled program; dspy.context isolation, plain callable tool for ReAct — 78/78 tests, Phase 1 9/9 PASS 16 Apr 2026, Comet-validated)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Vercel AI SDK (AI agent frameworks)	— (MPP + AP2 + x402; TypeScript; generateText + streamText + tool() + nextHandler; any @ai-sdk/* provider — 79/79 tests, Phase 1 12/12 PASS 16 Apr 2026, Comet-validated)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Google A2A (AI agent frameworks)	— (MPP + AP2 + x402; A2A v1.0 REST server + client; 6 live endpoints: `/.well-known/agent.json`, `/extendedAgentCard`, `/message:send`, `/tasks`, `/tasks/{id}`, `/tasks/{id}:cancel`; extended agent card with payment auth metadata; legacy JSON-RPC 2.0 compat kept — 120/120 tests, Phase 1 12/12 PASS 16 Apr 2026, Comet-validated)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
LangGraph (AI agent frameworks)	— (MPP + AP2 + x402; gates compiled StateGraph invoke/stream; AlgoVoiPaymentTool is BaseTool subclass, ToolNode-compatible, create_react_agent-compatible; flask_guard + flask_agent convenience wrappers — 77/77 tests, Phase 1 12/12 PASS 16 Apr 2026, Comet-validated)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Agno (AI agent frameworks)	— (MPP + AP2 + x402; gates any Agno Agent via pre_hooks, ASGI middleware for AgentOS, run_agent/arun_agent wrappers, flask_guard + flask_agent; AgnoPaymentRequired exception — 88/88 tests, Phase 1 13/13 PASS 16 Apr 2026, Comet-validated)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—
Zapier (no-code)	— (webhook bridge + action handlers: create_payment_link, verify_payment, list_networks, generate_challenge MPP/x402/AP2; ZapierActionResult return type — 77/77 tests, Phase 1+2 PASS 17 Apr 2026, Comet-validated)	24 networks (12 mainnet + 12 testnet)	—
Make / Integromat (no-code)	— (module handlers: create_payment_link, verify_payment, list_networks, generate_challenge MPP/x402/AP2; Make bundle dict return type — 71/71 tests, Phase 1+2 PASS 17 Apr 2026, Comet-validated)	24 networks (12 mainnet + 12 testnet)	—
n8n (no-code)	— (operation handlers: create_payment_link, verify_payment, list_networks, generate MPP/x402/AP2 challenges; n8n item dict return type — 77/77 tests, Phase 1+2 PASS 17 Apr 2026, Comet-validated)	24 networks (12 mainnet + 12 testnet)	—
X / Twitter (no-code)	— (webhook adapter + OAuth 1.0a tweet posting; auto-posts payment confirmations & checkout links when AlgoVoi fires a webhook; 62/62 unit tests; 4-chain mainnet e2e verified 18 Apr 2026; Base + Solana added 2026-04-22/23; Tempo added 2026-04-23 — payments confirmed on-chain, tweets posted automatically)	Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo	—

Last webhook test: 14 April 2026 — all 39 testable adapters passed on all 4 original chains (algorand_mainnet, voi_mainnet, hedera_mainnet, stellar_mainnet); Base and Solana added 2026-04-22/23. Checkout pages validated live via Comet CDP. 6 adapters skipped: BigCommerce (partial — order-amount fetch needs real API credentials), Discord (Ed25519), TrueLayer (ES512), Faire/Jumia/Printify (docs only).

Accounting adapters unit tests: 339 passing, 0 failing (includes replay attack prevention coverage — commit 5025c4e)

AI agent adapters — production ready as of 13 April 2026:

x402: spec v1 compliant — x402Version: 1, accepts array, CAIP-2 network IDs, string microunit amounts, payload.signature proof format. Real payments smoke-tested on all 4 original chains (Algorand, VOI, Stellar, Hedera mainnet); Base and Solana added 2026-04-22/23. x402/verify confirmed verified:true on each. 76/76 unit tests passing. Adapter v2.0.0.
MPP: 100% IETF spec compliant (v2.1.0) — id (HMAC-SHA256), method, intent="charge", request= (charge intent object), expires, challenge echo validation (Table 3), CAIP-2 network routing, replay protection, spec-compliant Payment-Receipt. On-chain verification smoke-tested on all 4 original chains (Algorand, VOI, Hedera, Stellar) 13 Apr 2026 ×2; Base and Solana added 2026-04-22/23. 153/153 unit tests.
AP2: production ready (v2.0.0) — AP2 v0.1 CartMandate/PaymentMandate with AlgoVoi crypto-algo extension. CartMandate issues PaymentMethodData per extension schema (network, receiver, amount_microunits, asset_id, min_confirmations, memo_required). PaymentMandate accepts payment_response.details.{network, tx_id, note_field}. ed25519 sig + on-chain AVM verification. PyNaCl + cryptography fallback both confirmed. 81/81 tests.

Two payment flows

Hosted checkout — Customer is redirected to a secure AlgoVoi-hosted payment page. Supports Algorand, VOI, Hedera, Stellar, Base, Solana, and Tempo. Works with any wallet (Pera, Defly, Lute, HashPack, Freighter, LOBSTR, MetaMask, Phantom, …). Payment confirmed via webhook or API status check. Used by all platforms including Shopify.

Extension payment — Customer pays directly on the store page using the AlgoVoi browser extension and algosdk. Supports Algorand and VOI only (AVM chains). Buyers paying on Hedera or Stellar use hosted checkout with their chain-native wallet. No redirect required for extension flow. Available on WooCommerce, OpenCart, PrestaShop, and Shopware.

Shopify checkout extension — "Pay with Crypto →" link rendered on the thank-you page via Shopify Checkout UI Extension (Preact). Customer selects their chain on a dedicated pay page. Webhook automatically adds payment link to order notes.

E-commerce integrations

Platform	Guide	Files	Status
Native PHP	—	native-php/	Available — drop-in, zero dependencies
Native Python	—	native-python/	Available — stdlib only, no pip install
Native Go	—	native-go/	Available — stdlib only, no go get
Native Rust	—	native-rust/	Available — zero crates, pure stdlib
Shopify	shopify.md	Private (hosted service)	Available — managed by AlgoVoi
WooCommerce	woocommerce.md	woocommerce/	Available — hosted + extension
Magento 2 / Adobe Commerce	magento.md	magento2/	Available — hosted checkout, Knockout.js
BigCommerce	bigcommerce.md	bigcommerce/	Partial — webhook sig verified; order-amount fetch requires real `store_hash` / `access_token`
Wix eCommerce	wix.md	wix/	Available — Payment Provider SPI (real checkout)
PrestaShop	prestashop.md	prestashop/	Available — hosted + extension
Squarespace	squarespace.md	squarespace/	Available — B2B webhook adapter
eBay	ebay.md	ebay/	Available — Python webhook adapter
Walmart	walmart.md	walmart/	Available — Python webhook adapter
Amazon SP-API	amazon.md	amazon-mws/	Available — B2B webhook adapter
CeX	cex.md	cex/	Available — Python operator-bypass adapter
Ecwid / Lightspeed E-Series	ecwid.md	ecwid/	Available — Python webhook adapter
OpenCart	opencart.md	opencart/	Available — hosted + extension
Shopware	shopware.md	shopware/	Available — hosted + extension
TikTok Shop	tiktok-shop.md	tiktok-shop/	Available — B2B webhook adapter

CMS integrations

Drop-in payment gateways for major content-management and publishing platforms. All three were shipped together on 15 April 2026 and Comet-validated end-to-end. Each adapter applies the full April 2026 + pass-2 hardening set (cancel-bypass guard, empty-secret HMAC reject, timing-safe compare, 64 KB body cap, https-only outbound, amount sanity, scheme guards, token length caps, mandatory payment cross-check on webhooks).

Platform	Guide	Files	Engine	Status
Drupal Commerce	drupal-commerce/README.md	drupal-commerce/	Drupal 10 / 11 + Commerce 2 / 3	Available — OffsitePaymentGatewayBase module, DI-driven, v1.0.0
Easy Digital Downloads	easy-digital-downloads/README.md	easy-digital-downloads/	EDD 3.2+ WordPress plugin	Available — digital downloads + licensing + recurring, v1.0.0
Ghost	ghost/README.md	ghost/	Ghost 5.x (Python, Admin API / JWT)	Available — grant-on-payment member upgrade, v1.0.0

Each adapter folder ships a README.md with a how-it-works diagram, quick-start, supported chains, webhook endpoint, security posture table, and dependency list.

Regional & international marketplace integrations

All regional marketplace adapters have been end-to-end tested on 14 April 2026 across all 4 original chains; Base and Solana added 2026-04-22/23. Checkout pages validated live via Comet CDP.

Platform	Guide	Region	Status
Flipkart	flipkart.md	India	Available — flipkart/
Etsy	etsy.md	Global	Available — etsy/
Printful	printful.md	Global (print-on-demand)	Available — printful/
Printify	printify.md	Global (print-on-demand)	Docs only — no webhook endpoint
Bol.com	bolcom.md	Netherlands / Belgium	Available — bolcom/
Lazada	lazada.md	SE Asia (MY, TH, PH, SG, ID, VN)	Available — lazada/
Tokopedia	tokopedia.md	Indonesia	Available — tokopedia/
Rakuten	rakuten.md	Japan / France / Germany	Available — rakuten/
Allegro	allegro.md	Poland / Central & Eastern Europe	Available — allegro/
Shopee	shopee.md	SE Asia / Brazil	Available — shopee/
Mercado Libre	mercadolibre.md	Latin America	Available — mercadolibre/
OnBuy	onbuy.md	United Kingdom	Available — onbuy/
Jumia	jumia.md	Africa (NG, KE, EG, GH + more)	Docs only — no webhook endpoint
Cdiscount	cdiscount.md	France / Belgium	Available — cdiscount/
Faire	faire.md	Global (B2B wholesale)	Docs only — faire/ — requires Faire API approval

Accounting integrations

All 7 accounting adapters are end-to-end tested on 14 April 2026 against api.algovoi.co.uk across all 4 original chains (28/28 pass); Base and Solana added 2026-04-22/23.

Adapter source is not publicly distributed. Integration guides are below. Download your adapter from the AlgoVoi dashboard after signing in with your API key.

Platform	Guide	Status
QuickBooks Online	quickbooks-online.md	Available — private download
Xero	xero.md	Available — private download
FreshBooks	freshbooks.md	Available — private download (form-urlencoded webhook + `fetch_order`)
Sage Business Cloud	sage-business-cloud.md	Available — private download (polling model, no push webhooks)
Zoho Books	zoho-books.md	Available — private download (webhook body must include `${INVOICE.INVOICE_TOTAL}`)
Wave	wave.md	Available — private download
MYOB	myob.md	Available — private download (polling model, no push webhooks)

Platform	Guide	Status
Telegram	telegram.md	Available — telegram/
Discord	discord.md	discord/ — Ed25519 signature; requires real Discord application keypair
WhatsApp Business	whatsapp.md	Available — whatsapp/
Instagram & Facebook Shops	instagram-shops.md	Available — instagram-shops/

Financial services integrations

Platform	Guide	Status
TrueLayer	truelayer.md	truelayer/ — ES512 JWK signature; requires real TrueLayer signing key
Yapily	yapily.md	Available — yapily/
Wormhole	wormhole.md	Available — wormhole/

AI agent & machine payment adapters

Adapter	Files	Description	Status
x402	x402-ai-agents.md / x402-ai-agents/	Autonomous AI agent payments via the x402 protocol (spec v1 — `accepts` array, CAIP-2 IDs, microunit amounts, `payload.signature`)	Production ready — real payments smoke-tested on all 4 original chains (Algorand, VOI, Stellar, Hedera); Base and Solana added 2026-04-22/23, `x402/verify` confirmed on each. Adapter v2.0.0, 76/76 tests.
MPP	mpp-adapter/mpp-adapter.md / mpp-adapter/	Machine Payments Protocol server middleware — 100% IETF `draft-ryan-httpauth-payment` compliant (challenge echo validation, CAIP-2 network routing, HMAC challenge IDs, on-chain verification, replay protection)	Production ready — 0.01 USDC live smoke-tested on all 4 original chains (Algorand, VOI, Hedera, Stellar) 13 Apr 2026; Base and Solana added 2026-04-22/23. Adapter v2.1.0, 153/153 tests.
AP2	ap2-adapter/ap2-adapter.md / ap2-adapter/	AP2 v0.1 CartMandate/PaymentMandate server middleware with AlgoVoi crypto-algo extension. ed25519 mandate signing + on-chain tx verification across all 7 chains (Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo).	Production ready — 0.01 USDC live smoke-tested on all 4 original chains 13 Apr 2026; Base + Solana added 2026-04-22/23; Tempo added 2026-04-23. Real ed25519 sig verified. v2.0.0, 81/81 tests.

AI Platform Adapters

Drop-in payment gates for AI provider APIs. Each adapter wraps the AI call behind an on-chain payment check — the caller pays 0.01 USDC (or any configured amount) before the AI responds. All adapters accept OpenAI-format message lists and share a common interface: check(headers, body) → result, complete(messages) → str, flask_guard() convenience method.

Platform	Class	SDK install	Protocol support	Files	Status
OpenAI + compatible	`AlgoVoiMppAI` / `AlgoVoiAp2AI` / `AlgoVoiOpenAI`	`pip install openai`	MPP, AP2, x402	ai-adapters/openai/	Available — 101/101 tests + smoke-tested all 4 original chains 14 Apr 2026; Base + Solana added 2026-04-22/23; Tempo added 2026-04-23
Anthropic Claude	`AlgoVoiClaude`	`pip install anthropic`	MPP, AP2, x402	ai-adapters/claude/	Available — 76/76 tests + smoke-tested all 4 original chains 14 Apr 2026; Base + Solana added 2026-04-22/23; Tempo added 2026-04-23
Google Gemini	`AlgoVoiGemini`	`pip install google-genai`	MPP, AP2, x402	ai-adapters/gemini/	Available — 75/75 tests (Phase 2 pending billing-enabled key)
Amazon Bedrock	`AlgoVoiBedrock`	`pip install boto3`	MPP, AP2, x402	ai-adapters/bedrock/	Available — 57/57 tests, Converse API (Nova / Claude / Llama / Titan models)
Cohere	`AlgoVoiCohere`	`pip install cohere`	MPP, AP2, x402	ai-adapters/cohere/	Available — Phase 1 + 1.5 + 2 PASS 4/4 chains 15 Apr 2026
xAI (Grok)	`AlgoVoiXai`	`pip install xai-sdk`	MPP, AP2, x402	ai-adapters/xai/	Available — 70/70 tests + Phase 1+2 PASS 4/4 chains 15 Apr 2026 (Comet-validated)
Mistral	`AlgoVoiMistral`	`pip install mistralai`	MPP, AP2, x402	ai-adapters/mistral/	Available — 70/70 tests + Phase 1 PASS 4/4 chains 15 Apr 2026 (Comet-validated)

All adapters support all 7 chains (Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo) and all 3 payment protocols (MPP, AP2, x402).

OpenAI — MPP Quick start

from mpp_algovoi import AlgoVoiMppAI

gate = AlgoVoiMppAI(
    openai_key        = "sk-...",
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    networks          = ["algorand_mainnet"],   # or voi_mainnet / hedera_mainnet / stellar_mainnet
    amount_microunits = 10000,                  # 0.01 USDC per call
    resource_id       = "ai-chat",
)

@app.route("/ai/chat", methods=["POST"])
def chat():
    result = gate.check(dict(request.headers))
    if result.requires_payment:
        return result.as_flask_response()   # 402 + WWW-Authenticate: Payment challenge
    # result.receipt.payer, .tx_id, .amount available
    return jsonify({"content": gate.complete(request.json["messages"])})

Supports any OpenAI-compatible provider via base_url:

Provider	base_url
OpenAI (default)	`https://api.openai.com/v1`
Mistral	`https://api.mistral.ai/v1`
Together AI	`https://api.together.xyz/v1`
Groq	`https://api.groq.com/openai/v1`
Perplexity	`https://api.perplexity.ai`

OpenAI — AP2 Quick start

from ap2_algovoi import AlgoVoiAp2AI

gate = AlgoVoiAp2AI(
    openai_key        = "sk-...",
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    networks          = ["algorand-mainnet", "voi-mainnet"],
    amount_microunits = 10000,                  # 0.01 USDC per call
)

@app.route("/ai/chat", methods=["POST"])
def chat():
    body   = request.get_json(silent=True) or {}
    result = gate.check(dict(request.headers), body)
    if result.requires_payment:
        return result.as_flask_response()   # 402 + X-AP2-Cart-Mandate header
    # result.mandate.payer_address, .network, .tx_id available
    return jsonify({"content": gate.complete(body["messages"])})

Claude — Quick start

from claude_algovoi import AlgoVoiClaude

gate = AlgoVoiClaude(
    anthropic_key     = "sk-ant-...",
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",               # "mpp" | "ap2" | "x402"
    network           = "algorand-mainnet",
    amount_microunits = 10000,               # 0.01 USDC per call
)

@app.route("/ai/chat", methods=["POST"])
def chat():
    body   = request.get_json(silent=True) or {}
    result = gate.check(dict(request.headers), body)
    if result.requires_payment:
        return result.as_flask_response()
    return jsonify({"content": gate.complete(body["messages"])})

Models: claude-opus-4-7 · claude-sonnet-4-6 (default) · claude-haiku-4-5-20251001

Gemini — Quick start

from gemini_algovoi import AlgoVoiGemini

gate = AlgoVoiGemini(
    gemini_key        = "AIza...",
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",               # "mpp" | "ap2" | "x402"
    network           = "algorand-mainnet",
    amount_microunits = 10000,               # 0.01 USDC per call
)

@app.route("/ai/chat", methods=["POST"])
def chat():
    body   = request.get_json(silent=True) or {}
    result = gate.check(dict(request.headers), body)
    if result.requires_payment:
        return result.as_flask_response()
    return jsonify({"content": gate.complete(body["messages"])})

Models: gemini-2.0-flash (default) · gemini-2.0-flash-lite · gemini-2.5-pro

Bedrock — Quick start

from bedrock_algovoi import AlgoVoiBedrock

gate = AlgoVoiBedrock(
    aws_access_key_id     = "AKIA...",       # or set AWS_ACCESS_KEY_ID env var
    aws_secret_access_key = "wJal...",       # or set AWS_SECRET_ACCESS_KEY env var
    aws_region            = "us-east-1",
    algovoi_key           = "algv_...",
    tenant_id             = "your-tenant-uuid",
    payout_address        = "YOUR_ALGORAND_ADDRESS",
    protocol              = "mpp",               # "mpp" | "ap2" | "x402"
    network               = "algorand-mainnet",
    amount_microunits     = 10000,               # 0.01 USDC per call
    model                 = "amazon.nova-pro-v1:0",
)

@app.route("/ai/chat", methods=["POST"])
def chat():
    body   = request.get_json(silent=True) or {}
    result = gate.check(dict(request.headers), body)
    if result.requires_payment:
        return result.as_flask_response()
    return jsonify({"content": gate.complete(body["messages"])})

Models (any model exposed by Bedrock Converse in your AWS region/account): amazon.nova-pro-v1:0 (default) · amazon.nova-lite-v1:0 · anthropic.claude-3-5-sonnet-20241022-v2:0 · meta.llama3-70b-instruct-v1:0 · amazon.titan-text-premier-v1:0

Cohere — Quick start

from cohere_algovoi import AlgoVoiCohere

gate = AlgoVoiCohere(
    cohere_key        = "...",                     # Cohere API key
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",                     # "mpp" | "ap2" | "x402"
    network           = "algorand-mainnet",
    amount_microunits = 10000,                     # 0.01 USDC per call
    model             = "command-r-plus-08-2024",
)

@app.route("/ai/chat", methods=["POST"])
def chat():
    body   = request.get_json(silent=True) or {}
    result = gate.check(dict(request.headers), body)
    if result.requires_payment:
        return result.as_flask_response()
    return jsonify({"content": gate.complete(body["messages"])})

Models: command-r-plus-08-2024 (default — most capable) · command-r-08-2024 (balanced) · command-r7b-12-2024 (fastest)

xAI (Grok) — Quick start

from xai_algovoi import AlgoVoiXai

gate = AlgoVoiXai(
    xai_key           = "xai-...",                  # xAI API key
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",                      # "mpp" | "ap2" | "x402"
    network           = "algorand-mainnet",
    amount_microunits = 10000,                      # 0.01 USDC per call
    model             = "grok-4",
)

@app.route("/ai/chat", methods=["POST"])
def chat():
    body   = request.get_json(silent=True) or {}
    result = gate.check(dict(request.headers), body)
    if result.requires_payment:
        return result.as_flask_response()
    return jsonify({"content": gate.complete(body["messages"])})

Models: grok-4 (default — latest, most capable) · grok-3 · grok-3-mini (fast + cheap) · grok-2-1212 · grok-2-vision-1212

Mistral — Quick start

from mistral_algovoi import AlgoVoiMistral

gate = AlgoVoiMistral(
    mistral_key       = "...",                        # Mistral API key
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",                        # "mpp" | "ap2" | "x402"
    network           = "algorand-mainnet",
    amount_microunits = 10000,                        # 0.01 USDC per call
    model             = "mistral-large-latest",
)

@app.route("/ai/chat", methods=["POST"])
def chat():
    body   = request.get_json(silent=True) or {}
    result = gate.check(dict(request.headers), body)
    if result.requires_payment:
        return result.as_flask_response()
    return jsonify({"content": gate.complete(body["messages"])})

Models: mistral-large-latest (default — flagship) · mistral-medium-latest · mistral-small-latest · codestral-latest · open-mistral-nemo · pixtral-large-latest

OpenAI-format messages work across all seven platforms — system roles are extracted automatically where required (Claude, Bedrock), Gemini assistant roles are mapped to model internally, and Cohere, xAI, and Mistral all accept the system role natively via their respective SDKs.

AI Agent Framework Adapters

Gate entire orchestration frameworks behind on-chain payment — not just a single model provider. These adapters are LLM-agnostic: pass any pre-built ChatModel, LCEL chain, RAG pipeline, or ReAct agent and the payment check wraps the whole thing.

Framework	Class	Install	Protocol support	Files	Status
LangChain	`AlgoVoiLangChain` + `AlgoVoiPaymentTool`	`pip install langchain-core langchain-openai`	MPP, AP2, x402	ai-agent-frameworks/langchain/	Available — 76/77 tests + Phase 1+2 PASS 5/5 chains 16 Apr 2026 (Comet-validated)
LlamaIndex	`AlgoVoiLlamaIndex` + `AlgoVoiPaymentTool`	`pip install llama-index`	MPP, AP2, x402	ai-agent-frameworks/llamaindex/	Available — 80/80 tests, Comet-validated 16 Apr 2026
CrewAI	`AlgoVoiCrewAI` + `AlgoVoiPaymentTool`	`pip install crewai`	MPP, AP2, x402	ai-agent-frameworks/crewai/	Available — 68/68 tests, Comet-validated 16 Apr 2026
Hugging Face	`AlgoVoiHuggingFace` + `AlgoVoiPaymentTool`	`pip install huggingface-hub smolagents`	MPP, AP2, x402	ai-agent-frameworks/huggingface/	Available — 83/83 tests, 16 Apr 2026
AutoGen	`AlgoVoiAutoGen` + `AlgoVoiPaymentTool`	`pip install pyautogen`	MPP, AP2, x402	ai-agent-frameworks/autogen/	Available — 86/86 tests, 16 Apr 2026
Semantic Kernel	`AlgoVoiSemanticKernel` + `AlgoVoiPaymentPlugin`	`pip install semantic-kernel`	MPP, AP2, x402	ai-agent-frameworks/semantic-kernel/	Available — 76/76 tests, 16 Apr 2026
Pydantic AI	`AlgoVoiPydanticAI` + `AlgoVoiPaymentTool`	`pip install pydantic-ai`	MPP, AP2, x402	ai-agent-frameworks/pydantic-ai/	Available — 77/77 tests, 16 Apr 2026
DSPy	`AlgoVoiDSPy` + `AlgoVoiPaymentTool`	`pip install dspy`	MPP, AP2, x402	ai-agent-frameworks/dspy/	Available — 78/78 tests, Phase 1 9/9 PASS 16 Apr 2026, Comet-validated
Vercel AI SDK	`AlgoVoiVercelAI` + `VercelAIResult`	`npm i ai zod`	MPP, AP2, x402	ai-agent-frameworks/vercel-ai-sdk/	Available — 79/79 tests, Phase 1 12/12 PASS 16 Apr 2026, Comet-validated — TypeScript
Google A2A	`AlgoVoiA2A` + `AlgoVoiPaymentTool`	`pip install flask`	MPP, AP2, x402	ai-agent-frameworks/a2a/	Available — 84/84 tests, Phase 1 12/12 PASS 16 Apr 2026, Comet-validated
LangGraph	`AlgoVoiLangGraph` + `AlgoVoiPaymentTool`	`pip install langgraph`	MPP, AP2, x402	ai-agent-frameworks/langgraph/	Available — 77/77 tests, Phase 1 12/12 PASS 16 Apr 2026, Comet-validated
Agno	`AlgoVoiAgno` + `AlgoVoiPaymentTool`	`pip install agno`	MPP, AP2, x402	ai-agent-frameworks/agno/	Available — 88/88 tests, Phase 1 13/13 PASS 16 Apr 2026, Comet-validated

LangChain — Quick start

from langchain_algovoi import AlgoVoiLangChain

gate = AlgoVoiLangChain(
    openai_key        = "sk-...",          # OpenAI key (or pass llm= to use any ChatModel)
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",             # "mpp" | "ap2" | "x402"
    network           = "algorand-mainnet",
    amount_microunits = 10000,             # 0.01 USDC per call
)

@app.route("/ai/chat", methods=["POST"])
def chat():
    body   = request.get_json(silent=True) or {}
    result = gate.check(dict(request.headers), body)
    if result.requires_payment:
        return result.as_flask_response()
    return jsonify({"content": gate.complete(body["messages"])})

Bring your own model — pass any pre-built LangChain ChatModel instead of an OpenAI key:

from langchain_anthropic import ChatAnthropic

gate = AlgoVoiLangChain(
    algovoi_key    = "algv_...",
    tenant_id      = "...",
    payout_address = "...",
    llm            = ChatAnthropic(model="claude-opus-4-7"),
)

Gate any LCEL chain or RAG pipeline:

chain = ChatPromptTemplate.from_template("Answer: {question}") | ChatOpenAI() | StrOutputParser()

result = gate.check(headers, body)
if not result.requires_payment:
    output = gate.invoke_chain(chain, {"question": body["question"]})

Drop into a ReAct agent as a BaseTool:

tool = gate.as_tool(resource_fn=lambda q: my_handler(q), tool_name="premium_kb")

from langchain.agents import create_react_agent, AgentExecutor
agent    = create_react_agent(llm, tools=[tool], prompt=prompt)
executor = AgentExecutor(agent=agent, tools=[tool])

The tool accepts {"query": "...", "payment_proof": "<base64>"}. Returns a challenge JSON dict if proof is absent or invalid; calls resource_fn(query) and returns the result if verified.

All 7 chains and all 3 protocols supported. Full reference: ai-agent-frameworks/langchain/README.md

LlamaIndex — Quick start

from llamaindex_algovoi import AlgoVoiLlamaIndex

gate = AlgoVoiLlamaIndex(
    openai_key        = "sk-...",
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",
    network           = "algorand-mainnet",
    amount_microunits = 10000,
)

# Gate a LlamaIndex QueryEngine (RAG pipeline)
result = gate.check(headers, body)
if not result.requires_payment:
    answer = gate.query_engine_query(query_engine, body["query"])

# Gate a ChatEngine (multi-turn)
if not result.requires_payment:
    reply = gate.chat_engine_chat(chat_engine, body["message"])

ReAct agent tool — drop into any LlamaIndex agent:

from llama_index.core.agent import ReActAgent

tool  = gate.as_tool(resource_fn=my_handler, tool_name="premium_kb")
agent = ReActAgent.from_tools([tool], llm=llm, verbose=True)

The tool accepts {"query": "...", "payment_proof": "<base64>"}. Returns a ToolOutput with .content (challenge JSON or resource result), .tool_name, .raw_input, .raw_output.

Bring your own LlamaIndex LLM (Anthropic, Google, Cohere, Bedrock, etc.):

from llama_index.llms.anthropic import Anthropic

gate = AlgoVoiLlamaIndex(
    algovoi_key    = "algv_...",
    tenant_id      = "...",
    payout_address = "...",
    llm            = Anthropic(model="claude-opus-4-7"),
)

All 7 chains and all 3 protocols supported. Full reference: ai-agent-frameworks/llamaindex/README.md

CrewAI — Quick start

from crewai_algovoi import AlgoVoiCrewAI
from crewai import Agent, Task, Crew, LLM

gate = AlgoVoiCrewAI(
    openai_key        = "sk-...",
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",
    network           = "algorand-mainnet",
    amount_microunits = 10000,
)

# Gate a crew.kickoff() call
result = gate.check(headers, body)
if not result.requires_payment:
    output = gate.crew_kickoff(my_crew, inputs={"topic": body["topic"]})

# Or use flask_guard with an inputs extractor
@app.route("/ai/research", methods=["POST"])
def research():
    return gate.flask_guard(my_crew, inputs_fn=lambda b: {"topic": b.get("topic", "")})

Add AlgoVoiPaymentTool to any CrewAI agent:

tool = gate.as_tool(resource_fn=my_handler, tool_name="premium_kb")

researcher = Agent(
    role      = "Research Analyst",
    goal      = "Use premium_kb to answer questions.",
    backstory  = "Expert researcher.",
    tools     = [tool],
    llm       = LLM(model="openai/gpt-4o"),
)

The tool uses PaymentToolInput (Pydantic args_schema) — the agent generates {"query": "...", "payment_proof": "<base64>"}, CrewAI validates it, and _run(query, payment_proof) is called directly as kwargs. Any crewai.LLM provider (OpenAI, Anthropic, Gemini, Bedrock, Groq, Together AI, …) is supported via the LiteLLM router.

All 7 chains and all 3 protocols supported. Full reference: ai-agent-frameworks/crewai/README.md

Hugging Face — Quick start

from huggingface_algovoi import AlgoVoiHuggingFace

gate = AlgoVoiHuggingFace(
    hf_token          = "hf_...",
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",
    network           = "algorand-mainnet",
    amount_microunits = 10000,
    model             = "meta-llama/Meta-Llama-3-8B-Instruct",
)

# Gate InferenceClient.chat_completion()
result = gate.check(headers, body)
if not result.requires_payment:
    reply = gate.complete(body["messages"])

# Gate a transformers pipeline
from transformers import pipeline
pipe = pipeline("text-generation", model="HuggingFaceH4/zephyr-7b-beta", token="hf_...")
if not result.requires_payment:
    answer = gate.inference_pipeline(pipe, body["messages"])

Drop into a smolagents ToolCallingAgent:

from smolagents import ToolCallingAgent, InferenceClientModel

tool  = gate.as_tool(resource_fn=my_handler, tool_name="premium_kb")
model = InferenceClientModel(model_id="meta-llama/Meta-Llama-3-8B-Instruct")
agent = ToolCallingAgent(tools=[tool], model=model)
agent.run("Use premium_kb to answer my question.")

The tool accepts query and payment_proof (base64) as kwargs. Returns challenge JSON if proof absent/invalid; calls resource_fn(query) and returns the result if verified. Works with any smolagents agent type (ToolCallingAgent, CodeAgent, custom).

All 7 chains and all 3 protocols supported. Full reference: ai-agent-frameworks/huggingface/README.md

AutoGen — Quick start

from autogen_algovoi import AlgoVoiAutoGen

gate = AlgoVoiAutoGen(
    openai_key        = "sk-...",
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",
    network           = "algorand-mainnet",
    amount_microunits = 10000,
)

# Build agents from gate.llm_config
from autogen import AssistantAgent, UserProxyAgent
assistant  = AssistantAgent("assistant",  llm_config=gate.llm_config)
user_proxy = UserProxyAgent("user_proxy", human_input_mode="NEVER",
                             max_consecutive_auto_reply=3,
                             code_execution_config=False)

# Gate a conversation
result = gate.check(headers, body)
if not result.requires_payment:
    output = gate.initiate_chat(assistant, user_proxy, body["message"], max_turns=5)

Callable tool — AutoGen 0.2.x:

tool = gate.as_tool(resource_fn=my_handler, tool_name="premium_kb")

@user_proxy.register_for_execution()
@assistant.register_for_llm(description=tool.description, name=tool.name)
def premium_kb(query: str, payment_proof: str = "") -> str:
    return tool(query=query, payment_proof=payment_proof)

AutoGen 0.4.x FunctionTool:

from autogen_core.tools import FunctionTool
fn_tool = FunctionTool(tool, description=tool.description, name=tool.name)

All 7 chains and all 3 protocols supported. Full reference: ai-agent-frameworks/autogen/README.md

Semantic Kernel — Quick start

from semantic_kernel_algovoi import AlgoVoiSemanticKernel

gate = AlgoVoiSemanticKernel(
    openai_key        = "sk-...",
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",
    network           = "algorand-mainnet",
    amount_microunits = 10000,
    model             = "gpt-4o",
)

# Gate SK chat completion (sync wrapper around async SK API)
result = gate.check(headers, body)
if not result.requires_payment:
    reply = gate.complete(body["messages"])

# Gate any KernelFunction
output = gate.invoke_function(kernel, summarise_fn, input=body["text"])

Add as a @kernel_function plugin:

plugin = gate.as_plugin(resource_fn=my_handler, plugin_name="premium_kb")
kernel.add_plugin(plugin, plugin_name="premium_kb")
# The LLM can select plugin.gate() via function calling (auto-invocation)

The gate function accepts query and payment_proof (base64). Returns challenge JSON if proof absent/invalid; calls resource_fn(query) and returns the result if verified.

All 7 chains and all 3 protocols supported. Full reference: ai-agent-frameworks/semantic-kernel/README.md

Pydantic AI — Quick start

from pydanticai_algovoi import AlgoVoiPydanticAI

gate = AlgoVoiPydanticAI(
    openai_key        = "sk-...",
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",
    network           = "algorand-mainnet",
    amount_microunits = 10000,
    model             = "openai:gpt-4o",     # any Pydantic AI provider:model string
)

# Gate chat completion
result = gate.check(headers, body)
if not result.requires_payment:
    reply = gate.complete(body["messages"])

# Gate any pre-built Agent (with optional dependency injection)
from pydantic_ai import Agent
my_agent = Agent("anthropic:claude-opus-4-7", system_prompt="Be concise.")
output   = gate.run_agent(my_agent, body["prompt"], deps=my_deps)

Add as a pydantic_ai.tools.Tool:

from pydantic_ai.tools import Tool

tool  = gate.as_tool(resource_fn=my_handler, tool_name="premium_kb")
agent = Agent("openai:gpt-4o", tools=[Tool(tool, name=tool.name, description=tool.description)])

The tool accepts query and payment_proof (base64). Returns challenge JSON if proof absent/invalid; calls resource_fn(query) if verified. Supports all Pydantic AI providers — OpenAI, Anthropic, Google, Groq, Ollama, and any OpenAI-compatible endpoint via base_url.

All 7 chains and all 3 protocols supported. Full reference: ai-agent-frameworks/pydantic-ai/README.md

DSPy — Quick start

from dspy_algovoi import AlgoVoiDSPy

gate = AlgoVoiDSPy(
    openai_key        = "sk-...",
    algovoi_key       = "algv_...",
    tenant_id         = "your-tenant-uuid",
    payout_address    = "YOUR_ALGORAND_ADDRESS",
    protocol          = "mpp",
    network           = "algorand-mainnet",
    amount_microunits = 10000,
    model             = "openai/gpt-4o",   # DSPy provider/model string (slash, not colon)
)

# Gate any DSPy module
import dspy

class QA(dspy.Signature):
    """Answer the question."""
    question: str = dspy.InputField()
    answer:   str = dspy.OutputField()

result = gate.check(headers, body)
if not result.requires_payment:
    answer = gate.run_module(dspy.ChainOfThought(QA), question=body["question"])

Gate a compiled DSPy program:

# Works with any compiled / optimised DSPy program (Predict, ChainOfThought, ReAct, MIPROv2…)
result = gate.run_module(my_compiled_program, question=body["question"])

Drop into a ReAct agent as a plain callable tool:

tool  = gate.as_tool(resource_fn=my_handler, tool_name="premium_kb")
react = dspy.ReAct(QA, tools=[tool])

lm = gate._ensure_lm()
with dspy.context(lm=lm):
    out = react(question=body["question"])

All LLM calls use dspy.context(lm=...) — global dspy.configure() state is never modified. DSPy's provider/model string format is supported for OpenAI, Anthropic, Google, Cohere, Groq, Ollama, and Azure OpenAI.

All 7 chains and all 3 protocols supported. Full reference: ai-agent-frameworks/dspy/README.md

Vercel AI SDK — Quick start

import { openai } from "@ai-sdk/openai";
import { AlgoVoiVercelAI } from "./vercel_ai_algovoi";

const gate = new AlgoVoiVercelAI({
  algovoiKey:       "algv_...",
  tenantId:         "your-tenant-uuid",
  payoutAddress:    "YOUR_ALGORAND_ADDRESS",
  protocol:         "mpp",
  network:          "algorand-mainnet",
  amountMicrounits: 10_000,
  model:            openai("gpt-4o"),   // any @ai-sdk/* provider
});

// Next.js App Router — one-liner
export const POST = (req: Request) => gate.nextHandler(req);

Streaming:

export async function POST(req: Request) {
  const body = await req.json();
  const result = await gate.check(req.headers, body);
  if (result.requiresPayment) return result.as402Response();
  return gate.streamText(body.messages).toDataStreamResponse();
}

Payment tool for LLM function calling:

const tool = gate.asTool(
  async (query) => myPremiumHandler(query),
  { toolName: "premium_kb", toolDescription: "Access premium knowledge base." }
);
// Use in generateText({ tools: { premium_kb: tool } })

Supports any @ai-sdk/* provider — OpenAI, Anthropic, Google, Groq, Mistral, Cohere, Ollama, Azure. Uses node:crypto for MPP HMAC; requires Node.js runtime (not Edge) for MPP. x402 and AP2 work on Edge runtimes.

All 7 chains and all 3 protocols supported. Full reference: ai-agent-frameworks/vercel-ai-sdk/README.md

Google A2A — Quick start

from a2a_algovoi import AlgoVoiA2A

gate = AlgoVoiA2A(
    algovoi_key="algv_...",
    tenant_id="your-tenant-uuid",
    payout_address="YOUR_ALGORAND_ADDRESS",
    protocol="mpp",
    network="algorand-mainnet",
    amount_microunits=10_000,
    agent_name="My AlgoVoi Agent",
)

# Flask A2A server
from flask import Flask, jsonify
app = Flask(__name__)

@app.route("/a2a", methods=["POST"])
def a2a_endpoint():
    return gate.flask_agent(lambda text: my_llm(text))

@app.route("/.well-known/agent-card.json")
def card():
    return jsonify(gate.agent_card("https://myhost.com/a2a"))

# A2A client — call another agent
response = gate.send_message("https://other-agent.example.com/a2a", "hello", payment_proof="proof")
task = response["result"]  # {"id": "...", "status": {"state": "completed"}, "artifacts": [...]}

# Payment tool for A2A pipelines
tool = gate.as_tool(lambda q: fetch_kb(q), tool_name="premium_kb")

All 7 chains and all 3 protocols supported. Full reference: ai-agent-frameworks/a2a/README.md

No-Code / Automation Adapters

Drop-in Python classes that bridge AlgoVoi crypto payment flows into Zapier, Make (Integromat), and n8n — the three leading no-code / low-code automation platforms. Each adapter is a single file with zero external dependencies (stdlib HTTP only), mirrors the native Python adapter pattern, and applies the full April 2026 + pass-2 security hardening.

All three adapters were shipped on 17 April 2026 and are Comet-validated end-to-end.

Platform	Class	Return format	Files	Tests	Status
Zapier	`AlgoVoiZapier`	`ZapierActionResult` dataclass	no-code/zapier/	77	Available — Phase 1+2 PASS
Make (Integromat)	`AlgoVoiMake`	Make bundle dict	no-code/make/	71	Available — Phase 1+2 PASS
n8n	`AlgoVoiN8n`	n8n item dict	no-code/n8n/	77	Available — Phase 1+2 PASS

Total: 225/225 tests · 21/21 smoke checks (Phase 1) · 3/3 live create_payment_link + verify_payment (Phase 2)

Supported across all 28 networks (14 mainnet + 14 testnet) on Algorand, VOI, Hedera, Stellar, Base, Solana, and Tempo. All three adapters support MPP, x402, and AP2 challenge generation.

Zapier — Quick start

from zapier_algovoi import AlgoVoiZapier

handler = AlgoVoiZapier(
    algovoi_key    = "algv_...",
    tenant_id      = "your-tenant-uuid",
    payout_algorand= "YOUR_ALGORAND_ADDRESS",
    webhook_secret = "whsec_...",                          # optional
    zapier_hook_url= "https://hooks.zapier.com/hooks/catch/XXXX/YYYY/",  # optional
)

# Create a payment link (Zapier action)
result = handler.action_create_payment_link({
    "amount":   5.00,
    "currency": "USD",
    "label":    "Premium access",
    "network":  "algorand_mainnet",
})
# result.success, result.data["checkout_url"], result.data["token"]

# Verify payment status
result = handler.action_verify_payment({"token": "tok_..."})
# result.data["paid"] → True/False, result.data["status"] → "active"|"paid"|...

# Receive and forward an AlgoVoi webhook to a Zapier Catch Hook
result = handler.receive_and_forward(raw_body=..., signature=...)

# Generate MPP / x402 / AP2 challenge
result = handler.action_generate_challenge({
    "protocol":          "mpp",        # "mpp" | "x402" | "ap2"
    "resource_id":       "/api/premium",
    "amount_microunits": 10_000,
    "network":           "algorand_mainnet",
})

Make (Integromat) — Quick start

from make_algovoi import AlgoVoiMake

handler = AlgoVoiMake(
    algovoi_key     = "algv_...",
    tenant_id       = "your-tenant-uuid",
    payout_algorand = "YOUR_ALGORAND_ADDRESS",
    payout_stellar  = "G...",    # optional — add any chain
)

# Create a payment link (Make module)
bundle = handler.module_create_payment_link({
    "amount":   10.00,
    "currency": "USD",
    "label":    "API access — 30 days",
    "network":  "stellar_mainnet",
})
# bundle["data"]["checkout_url"], bundle["data"]["token"]
# on error: bundle["error"]["message"], bundle["error"]["code"]

# Verify payment
bundle = handler.module_verify_payment({"token": "tok_..."})
# bundle["data"]["paid"], bundle["data"]["status"]

# Generate challenge (MPP / x402 / AP2)
bundle = handler.module_generate_challenge({
    "protocol":          "x402",
    "resource_id":       "/api/v1/data",
    "amount_microunits": 500_000,
    "network":           "stellar_mainnet",
})

# Receive AlgoVoi webhook
bundle = handler.receive_webhook(raw_body=..., signature=...)

n8n — Quick start

from n8n_algovoi import AlgoVoiN8n

handler = AlgoVoiN8n(
    algovoi_key   = "algv_...",
    tenant_id     = "your-tenant-uuid",
    payout_hedera = "0.0.XXXXX",   # set whichever chains you support
)

# Create a payment link (n8n Code node operation)
item = handler.execute_create_payment_link({
    "amount":   2.50,
    "currency": "USD",
    "label":    "Agent service call",
    "network":  "hedera_mainnet",
})
# item["json"]["success"], item["json"]["checkout_url"], item["json"]["token"]

# Verify payment
item = handler.execute_verify_payment({"token": "tok_..."})
# item["json"]["paid"], item["json"]["status"]

# Generate challenges
item = handler.execute_generate_mpp_challenge({
    "resource_id": "/api/premium", "amount_microunits": 10_000, "network": "algorand_mainnet"
})
item = handler.execute_generate_x402_challenge({
    "resource_id": "/api/data",    "amount_microunits": 500_000, "network": "algorand_mainnet"
})
item = handler.execute_generate_ap2_mandate({
    "resource_id": "/service",     "amount_microunits": 2_000_000, "network": "voi_mainnet"
})

# Receive and verify an AlgoVoi webhook
item = handler.receive_webhook(raw_body=..., signature=...)
item = handler.execute_verify_webhook_signature({"raw_body": ..., "signature": ...})

Full reference: no-code/README.md

MCP Server

An MCP (Model Context Protocol) server that exposes AlgoVoi's payment infrastructure as tools directly inside Claude Desktop, Claude Code, Cursor, Windsurf, and any other MCP-compatible AI assistant. Ships as two packages — pick whichever runtime your client supports:

Package	Install	Command
`@algovoi/mcp-server` (npm)	`npm i -g @algovoi/mcp-server`	`npx -y @algovoi/mcp-server`
`algovoi-mcp` (PyPI)	`pip install algovoi-mcp`	`uvx algovoi-mcp`

13 built-in tools

#	Tool	What it does
1	`create_payment_link`	Create a hosted-checkout URL for a given amount and chain
2	`verify_payment`	Verify a checkout token (optionally with a tx_id)
3	`prepare_extension_payment`	In-page wallet-flow params (Algorand / VOI)
4	`verify_webhook`	HMAC-SHA256 signature check for AlgoVoi webhooks
5	`list_networks`	Supported chains + asset IDs (offline, no API call)
6	`generate_mpp_challenge`	IETF MPP 402 `WWW-Authenticate` headers + challenge_id
7	`verify_mpp_receipt`	Verify an MPP on-chain receipt (direct indexer, no API call)
8	`verify_x402_proof`	Verify an x402 base64 payment proof (direct indexer)
9	`generate_x402_challenge`	x402 `X-Payment-Required` 402 headers + payload
10	`generate_ap2_mandate`	AP2 v0.1 `PaymentMandate` for AI agent payment flows
11	`verify_ap2_payment`	Verify an AP2 mandate payment receipt (direct indexer)
12	`fetch_agent_card`	`GET {agent_url}/.well-known/agent.json` — discover an A2A agent's capabilities and payment requirements
13	`send_a2a_message`	`POST {agent_url}/message:send` — call a payment-gated A2A v1.0 agent; returns task on 200, challenge headers on 402 for pay-and-retry

Quick start — Claude Desktop / Claude Code / Cursor

{
  "mcpServers": {
    "algovoi": {
      "command": "npx",
      "args": ["-y", "@algovoi/mcp-server"],
      "env": {
        "ALGOVOI_API_KEY":         "algv_...",
        "ALGOVOI_TENANT_ID":       "...",
        "ALGOVOI_PAYOUT_ALGORAND": "<your-algorand-address>",
        "ALGOVOI_PAYOUT_VOI":      "<your-voi-address>",
        "ALGOVOI_PAYOUT_HEDERA":   "0.0.<your-account>",
        "ALGOVOI_PAYOUT_STELLAR":  "G<your-stellar-address>",
        "ALGOVOI_PAYOUT_BASE":     "0x<your-evm-address>",
        "ALGOVOI_PAYOUT_SOLANA":   "<your-solana-address>"
      }
    }
  }
}

Single-chain users only need to set the env var for their chain — the others are optional. For Base use ALGOVOI_PAYOUT_BASE; for Solana use ALGOVOI_PAYOUT_SOLANA. For the Python package, swap "command": "uvx", "args": ["algovoi-mcp"].

Config file locations: Claude Desktop %APPDATA%\Claude\claude_desktop_config.json (Windows) / ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) · Claude Code ~/.claude.json · Cursor ~/.cursor/mcp.json

Full reference: mcp-server/README.md · TypeScript source: mcp-server/typescript/ · Python source: mcp-server/python/

Charity Interfaces

Pre-built, self-contained donation pages powered by AlgoVoi and deployed to Cloudflare Pages. Zero external dependencies — drop the HTML file onto any server or share the URL directly.

Page	URL	Cause	Amount	Chain
Manndeshi Foundation	your-domain.example/manndeshi.html	Empowering rural women in India to become successful entrepreneurs	$2.75 USDC	Algorand

Source: x402-widget/manndeshi.html · x402-widget/functions/api/manndeshi/donate.js

A drop-in Web Component for accepting x402 payments on any website. Deployed to Cloudflare Pages at your-domain.example. Full source and security guide: x402-widget/

<script type="module" src="https://your-domain.example/widget.js"></script>
<algovoi-x402
  amount="29.99"
  chains="ALGO,VOI,XLM,HBAR,ETH,SOL"
  tenant-id="your-tenant-id"
  api-key="algv_your-api-key">
</algovoi-x402>

Feature	Detail
Format	`<algovoi-x402>` Web Component — works in any HTML page
Chains	`ALGO` (Algorand), `VOI`, `XLM` (Stellar), `HBAR` (Hedera), `ETH` (Base), `SOL` (Solana)
Backend	Cloudflare Pages Function proxying `POST /v1/payment-links`
Demo endpoint	`POST /api/x402/demo` — uses server-side env secrets (no client keys)
Pay endpoint	`POST /api/x402/pay` — uses client-supplied tenant-id + api-key
CORS	Enabled — embeddable from any origin
Security	See x402-widget/README.md — server-side proxy recommended for production

Adapters with limited support

Six adapters have structural blockers that prevent full end-to-end testing:

Adapter	Blocker
BigCommerce	Webhook signature verifies correctly, but `GET /v2/orders/{id}` for order amount requires a real `store_hash` and `access_token`. All other flow steps work.
Discord	Uses Ed25519 asymmetric signing — cannot sign test webhooks without a real Discord application keypair.
TrueLayer	Uses ES512 JWK signing — cannot sign test webhooks without a real TrueLayer private key.
Faire	Requires Faire API approval before any developer access.
Jumia	Documentation only — no webhook endpoint is publicly available.
Printify	Documentation only — no webhook endpoint is publicly available.

How payments work

Customer places order and selects chain (Algorand / VOI / Hedera / Stellar / Base / Solana)
            ↓
Plugin creates payment link via POST /v1/payment-links
            ↓
Hosted: redirect to AlgoVoi checkout page
Extension: pay in-page via AlgoVoi browser wallet
            ↓
Customer pays on-chain
            ↓
AlgoVoi verifies the transaction on-chain
            ↓
Webhook fires → order marked as paid in your platform

Payments are verified directly on-chain — no intermediary holds funds. Settlement goes straight to the merchant's configured payout address.

Security

Every adapter is hardened against real-world payment attack vectors. Pass 1 (April 2026) covered cancel-bypass / empty-secret / cookie-swap / SSRF / timing attacks across all deployed stores and native adapters. Pass 2 (15 April 2026) added defensive depth across the B2B webhook trio + native SDKs + a critical Rust compile fix.

Vulnerabilities found and fixed — Pass 1 (April 2026)

Vulnerability	Severity	Affected	Fix
Cancel-bypass	Critical	Shopware, PrestaShop (hosted)	`finalize()` / `confirm.php` now call `GET /checkout/{token}` and only mark paid if status is `paid`/`completed`/`confirmed`
Webhook empty-secret	High	OpenCart, Shopware	Reject with HTTP 500 before HMAC check if `webhook_secret` is empty — prevents `hash_hmac('sha256', $body, '', true)` forgery
Cookie-swap attack	High	PrestaShop (extension)	`verify.php` cross-checks `id_customer` against logged-in customer before marking order as paid
SSRF on checkout URL	Medium	All platforms	`parse_url()` host comparison before any server-side fetch of checkout page
Timing attack	Medium	WooCommerce	`hash_equals()` for order_key comparison instead of `!==`
Missing SSL verification	Medium	OpenCart, PrestaShop	`CURLOPT_SSL_VERIFYPEER => true` and `CURLOPT_SSL_VERIFYHOST => 2` on all `curl` calls
Input validation	Low	All platforms	`tx_id` length guard (>200 chars rejected), network whitelist with strict `in_array()`
Webhook replay attack	Medium	Xero (accounting)	`is_replay()` checks `eventDateUtc` (with `firstRetryMoment` fallback) — webhooks older than 5 minutes rejected

Vulnerabilities found and fixed — Pass 2 (15 April 2026)

Comet-validated audit across the B2B webhook trio and all 4 native SDKs. All seven adapters bumped from 1.0.0 to 1.1.0.

Vulnerability	Severity	Affected	Fix
Native Rust crate did not compile	Critical	`native-rust`	`html_escape` referenced a non-existent `html::escape` module. Replaced with local implementation; crate now builds clean
XSS via `</script>` break-out	High	`native-python`	Caller-supplied `verify_url` / `success_url` were embedded into a `<script>` block via `json.dumps()`, which does not escape `</`. Added `_safe_url_for_script()` validator + belt-and-braces `</` → `<\/` neutralisation
SSRF token-leak (caller-supplied URL)	High	`amazon-mws` (`confirm_shipment`), `tiktok-shop` (`update_shipping`)	`marketplace_url` / `api_base` parameters now allowlisted to `.amazon.com` / `.tiktokglobalshop.com` only. SP-API access token cannot be sent to attacker-controlled hosts
HMAC TypeError on bytes/None signature	High	All Python adapters	`hmac.compare_digest` raises uncaught `TypeError` on type mismatch — surface as 500 instead of clean 401. Type guards added before the comparison
`parse_order_webhook` `AttributeError` on null fields	Medium	`tiktok-shop`, `squarespace`	`dict.get(k, default)` returns the literal `None` when the key exists but is JSON null. Added explicit `is None` checks + `AttributeError` to except tuple. Squarespace also dropped the flat-payload fallback that allowed unwrapped spoofs
Plaintext API-key leak via `post()`	High	`native-php`, `native-go`, `native-rust`	Internal `post()` helpers built request URLs from `api_base` with no scheme check. With misconfigured `http://`, the `Authorization: Bearer` header travelled in plaintext on every request. All three now refuse `http://` before any request is built
Webhook body-size unbounded	Low	All Python adapters	`verify_webhook` parsed bodies of any size, processing 1 MB+ inputs in full. Added 64 KB cap (`MAX_WEBHOOK_BODY_BYTES`) before the HMAC computation
Amount sanity (`NaN` / `Inf` / negative / zero)	Low	All adapters	`process_order` / `create_payment_link` accepted any `float`. Added `isfinite() && > 0` guard locally so the gateway round-trip is avoided
`redirect_url` scheme unrestricted	Low	All adapters	`file://`, `gopher://`, `javascript:` schemes were forwarded to the gateway verbatim. Now rejected with `https`-only allowlist
`verify_payment` / `verify_hosted_return` no scheme guard	Medium	All adapters	`_post()` had a guard but the `GET /checkout/{token}` path bypassed it. Plaintext `api_base` would leak the token in the URL. Explicit `startswith("https://")` check added on every read path
`token` length cap missing	Low	All adapters	Only `tx_id` had the 200-char cap; `token` was checked for emptiness only, allowing arbitrary-length payloads to be URL-encoded into the request path. Both inputs now length-capped
Port-mismatch SSRF in `_scrape_checkout`	Low	`native-php`, `native-go`, `native-rust`	Host comparison ignored port — same hostname on a different port slipped through. Now compares `host:port`
Constructor signature drift in READMEs	Low (docs)	7 adapters	Quick-start examples documented args (`refresh_token`, `app_key`, `algovoi_api_key`, etc.) that did not exist on the actual classes — copy-pasting raised `AttributeError`. All 7 READMEs rewritten to match real signatures

Security measures in every adapter

HMAC webhook verification — hash_equals (PHP), hmac.compare_digest (Python), hmac.Equal (Go), constant_time_eq (Rust)
Empty secret rejection — webhooks rejected before HMAC check if secret is not configured
SSRF protection — checkout URL host validated against configured API base before server-side fetch
Cancel-bypass prevention — hosted checkout returns verified via API status check before marking orders complete
Order ownership checks — customer ID cross-referenced on verify endpoints (prevents cookie/session swap)
TLS enforced — SSL verification on all outbound HTTP calls across every language
Input validation — network whitelist, tx_id length guard, timing-safe comparisons
No hardcoded secrets — all credentials read from platform admin config or environment variables
Replay attack prevention — is_replay() method on all 7 accounting adapters; real implementation on Xero (eventDateUtc / firstRetryMoment, 5-minute window, fail-open); documented no-op on platforms with no signed timestamp in payload

Getting started

Sign up — Start a free trial with just your wallet address (no email required)
Get your API key — Instant API access with testnet + capped mainnet (30-day trial)
Configure networks — Add payout addresses for Algorand, VOI, Hedera, Stellar, Base, and/or Solana
Install an adapter — Drop the plugin into your store, or use a native adapter for custom apps
Accept payments — Customers select their chain and pay with stablecoins

License

This repository is licensed under the Business Source License 1.1.

Permitted

Install plugins on your own store (WooCommerce, OpenCart, PrestaShop, Shopware)
Use native adapters (PHP, Python, Go, Rust) in your own application
Fork and modify the code for your own internal use
Contribute improvements back via pull requests
All usage requires a valid AlgoVoi tenant account

Prohibited

Operating the adapters (or derivatives) as a competing hosted payment service or payment gateway
Reselling, sublicensing, or redistributing as a commercial product
Processing payments without a valid AlgoVoi tenant account
Removing or altering copyright, attribution, or license notices

Not distributed

Shopify app — proprietary hosted service operated by AlgoVoi. Merchants install via the Shopify App Store; source code is not publicly distributed.
Accounting adapters (QuickBooks Online, Xero, FreshBooks, Sage Business Cloud, Zoho Books, Wave, MYOB) — source code is not publicly distributed. Integration guides are in this repository. Download your adapter from the AlgoVoi dashboard after signing in.

Support

Documentation: github.com/chopmob-cloud/AlgoVoi-Platform-Adapters (this repository)
Open an issue in this repository
Contact via X (@AlgoVoi)
API: api.algovoi.co.uk