The Stall

June 21, 2026 · View on GitHub

210 pay-per-call AI data tools — no subscriptions, no API keys. Pay with crypto (x402/USDC on Base) or card (Stripe prepaid credits).

Live Network x402 Stripe Provider thebrierfox/the-stall MCP server

Live endpoint: https://the-stall.intuitek.ai MCP endpoint: /mcp — streamable HTTP, use POST Agent card: /.well-known/agent.json x402 discovery: /.well-known/x402 Catalog: /catalog MCP registry: ai.intuitek.the-stall/the-stall


Payment options

Two rails, same capabilities, no accounts required:

Option A — Crypto (x402, agents and wallets): Call any /cap/<name> endpoint → receive 402 Payment Required with the USDC price → pay on Base mainnet via the x402 facilitator → result returned automatically. No signup.

Option B — Card (Stripe, humans and devs): Buy prepaid credits once, then call any cap with Authorization: Bearer <token> — 1 credit per call, no gas, no per-call signing.

  1. POST https://the-stall.intuitek.ai/v1/fiat/checkout with {"bundle":"starter"} → returns a Stripe checkout URL.
    • starter $5 / 100 credits · pro $30 / 1,000 credits · scale $200 / 10,000 credits
  2. After paying: GET https://the-stall.intuitek.ai/v1/fiat/token?session_id=<id> → returns your bearer token.
  3. Add Authorization: Bearer <token> to any /cap/<name> call.

Current capabilities — 210 live tools (v4.64.0)

Full catalog at /catalog. Each capability supports both payment rails — x402 (USDC on Base) and card/Bearer. No API keys, no accounts, no monthly fees.

CapabilityPriceDescription
address-security$0.007Wallet/address security and reputation check
agent-access-check$0.006Checks whether a website is accessible and agent-friendly
agent-kya-score$0.003Know Your Agent (KYA) trust score for any EVM wallet
ai-image-gen$0.080Generate an AI image from a text prompt using DALL-E 3
vision-analyze$0.025AI vision analysis of any image URL using GPT-4o-mini. Modes: describe (full scene), ocr (text extraction), chart (data/trends), ui (interface analysis), identify (object ID), qa (answer a question about the image).
air-quality$0.002Real-time US AQI and pollutant readings for any lat/lon
analyst-ratings$0.010Wall Street analyst consensus and price targets for any US equity
arxiv-intel$0.003Search arXiv preprints by query, field (title/abstract/author), and category (cs.AI, cs.LG, etc.). Returns title, authors, abstract, arXiv ID, PDF link, and publish date. Canonical source for AI/ML/CS preprints — months ahead of peer-reviewed journals. No API key.
aviation-weather$0.003Current METAR + 24–30h TAF forecast for any airport. Returns flight category (VFR/MVFR/IFR/LIFR), wind, visibility, ceiling, and forecast periods. Accepts IATA (JFK) or ICAO (KJFK). Source: NOAA Aviation Weather Center — free, no API key.
base-season$0.003Base chain season snapshot: total chain TVL, top 10 protocols by Base-native TVL, category breakdown, 7d trend, and top Base ecosystem tokens by market cap
block-intel$0.002Returns block header data (number, hash, timestamp, gas used/limit, base fee, tx count, validator address) for any block on Base, Ethereum, or Arbitrum
breadcrumb-extractor$0.003Extracts structured breadcrumb navigation from a URL
btc-game-theory$0.006Bitcoin mining game theory and systems dynamics in one call
btc-miner-econ$0.005Bitcoin mining economics and fee-market game theory via mempool
btc-systems-theory$0.008Seven-lens systems theory analysis of the Bitcoin network
chain-pulse$0.006Returns an Ethereum block header + current stablecoin depeg status in one call
changelog-generate$0.003Converts conventional commit messages to keep-a-changelog format blocks. Supports full BREAKING CHANGE / footer / multi-scope syntax. Pure transform — no external API.
chromatic-dispersion$0.004Fiber optic chromatic dispersion calculator
citation-formatter$0.008Looks up an academic paper by DOI and formats it as BibTeX, APA, MLA, or Chicago citation
city-lookup$0.010Search airports and cities by keyword, IATA code, or city name
classic-novels$0.004Looks up classic and contemporary books by title, author, or ISBN via Open Library (748M+ editions)
clinical-trials$0.005Search ClinicalTrials
code-api-surface$0.10Analyzes a code snippet and returns its API surface: HTTP routes (method + path), exported symbols, and middleware
code-test-detector$0.005Detects testing frameworks and test coverage presence in a code snippet or GitHub repository
commodity-futures$0.010Returns live price and intraday metrics for major commodity futures: crude oil, natural gas, gold, silver, copper, platinum, wheat, corn, soybeans, and coffee
company-due-diligence$0.007AI-agent due diligence on any company
company-intel$0.012Returns SEC EDGAR due diligence data for any US public company by ticker symbol: legal name, CIK, SIC industry code and description, state of incorpor
concentration-risk-score$0.10Returns a concentration-risk score for an x402 pay_to wallet: HHI, unique payer count, top-payer share, persistence across scans, and a risk tier (LOW / MEDIUM / HIGH / CRITICAL)
congressional-trades$0.022US Congressional stock trades (STOCK Act disclosures)
consumer-brief$0.350AI-synthesized US consumer health briefing
country-info$0.002Country information lookup by name, ISO code (alpha-2 or alpha-3), or capital city
credit-spreads$0.008Returns current US corporate credit spreads from ICE BofA indices via FRED (free, no API key): High Yield OAS, Investment Grade OAS, and BBB (lowest IG tier) OAS
crypto-fear-greed$0.005Crypto Fear & Greed Index — current score (0=extreme fear, 100=extreme greed), 7-day trend, 30-day min/max/avg, and trading regime signal
crypto-fiat-price$0.015Cryptocurrency price in any fiat currency — JPY, EUR, CNY, GBP, KRW, INR, AUD, BRL, or 80+ more
crypto-news-impact$0.008Latest cryptocurrency news headlines from CoinDesk with live price correlation for mentioned assets
crypto-pulse$0.007Crypto market pulse — latest Ethereum (or Base) block context plus top crypto gainers and losers by 24h change, in a single call
crypto-top-movers$0.008Real-time cryptocurrency market snapshot: top 5 gainers and top 5 losers by 24-hour percentage change (among the top 100 coins by market cap), plus th
db-perf-intel$0.003Database performance intelligence: current versions, EOL status, and benchmark-grounded performance profiles for PostgreSQL, MySQL, MariaDB, MongoDB,
defillama-coin-price$0.016On-chain aggregated token prices via DefiLlama coins API — coingecko IDs, contract addresses, or shorthand (eth, btc, sol). Up to 10 tokens per call. Undercuts blockrun.ai $0.021/call by 24%.
defillama-pack$0.024DeFi research pack: TVL, chain breakdown, fees, and native token price for 1–3 protocols in one call. Collapses defillama-protocol + defillama-coin-price 2-call chain at 70% of combined cost ($0.034→$0.024).
defillama-protocol$0.018DefiLlama protocol TVL, chain breakdown, 24h/7d change, fees, and metadata for any DeFi protocol (aave, uniswap-v3, lido, etc.). Undercuts blockrun.ai $0.022/call by 18%.
dictionary-intel$0.001English word lookup: definitions (up to 4 per part of speech), IPA phonetics, audio pronunciation URL, synonyms, antonyms, and usage examples. Useful for writing agents, NLP preprocessing, and content generation. No API key.
defi-market-pulse$0.006Combined DeFi yield intelligence and market momentum in one call — 33% cheaper than separate yield-farming-active + market-movers calls ($0
defi-portfolio$0.007Multi-chain DeFi portfolio scanner
defi-state-pack$0.008Returns Ethereum block header + stablecoin depeg status + top DeFi yield farming pools in one call
defi-yields$0.025Returns top DeFi yield pools ranked by APY from DeFiLlama
dex-pair-search$0.005Search DEX trading pairs for any token (by symbol, name, or contract address) across 50+ chains including Ethereum, Solana, Base, BSC, Arbitrum, Polygon, and Avalanche
dex-swap-quote$0.012Best-route DEX swap quote across 20+ chains via Li
dex-trending-pools$0.015Trending DEX liquidity pools with buy/sell pressure data across multiple timeframes (5m, 1h, 6h, 24h)
dividend-calendar$0.008Upcoming dividend ex-dates from NASDAQ — all stocks going ex-dividend on a given date (default: today) or in the next 1–7 days
dividend-intel$0.015Full dividend intelligence for any US equity: trailing 12-month yield, forward annual rate, payout frequency (monthly/quarterly/semi-annual/annual), 5
cve-intel$0.004CVE vulnerability lookup via NVD NIST (260K+ CVEs). Query by CVE ID, keyword, or severity. Returns CVSS score, attack vector, CWEs, and references
dns-lookup$0.003DNS record lookup for any domain via Cloudflare DoH
document-qa-prep$0.005Prepares a document for question-answering and RAG pipelines
domain-whois$0.006Domain WHOIS/RDAP lookup
drug-intel$0.008FDA drug intelligence: labeling (warnings, dosage, drug interactions, contraindications, indications), adverse event report summary (top reactions + total count), and recent recall history
earnings-calendar$0.005Upcoming US stock earnings — report date, EPS estimate, pre/post-market timing
earnings-surprises$0.010Historical EPS beat/miss data for any US equity: actual EPS, consensus estimate, surprise %, beat rate, estimate revisions (30-day EPS drift), and next earnings date
earthquake-intel$0.005Real-time earthquake intelligence from USGS
economic-calendar$0.010Upcoming US macro data release schedule: CPI, NFP, FOMC, GDP, PCE, PPI, JOLTS, Retail Sales, Housing Starts, and 20+ more releases with exact dates, times (ET), and market-impact priority
email-verify$0.006Email address validation and quality scoring
energy-brief$0.350AI-synthesized US energy market situation briefing
ens-lookup$0.004ENS name ↔ Ethereum address resolution
equity-brief$0.350AI-synthesized equity situation brief for any US stock
equity-fundamentals$0.015Fundamental valuation metrics for any US public company — P/E TTM, forward P/E, PEG, P/B, EV/EBITDA, margins, ROE, ROA, revenue TTM, earnings/revenue growth, free cash flow, market cap, beta
equity-sentiment$0.015Equity market Fear & Greed composite
equity-technicals$0.49Returns a complete technical analysis package for any US stock: RSI(14) with oversold/overbought signal, MACD(12/26/9) with histogram, Bollinger Bands
erc20-snapshot$0.007Complete ERC20 token state in one call: name, symbol, decimals, total supply (raw + formatted), wallet balance, and allowance
etf-holdings$0.018Top holdings, sector weights, and asset allocation for any US ETF (SPY, VOO, QQQ, AGG, XLK, etc
eth-block$0.002Returns an Ethereum block header and transaction hashes by block number, hex string, or tag (latest/pending/earliest/safe/finalized)
evm-log-events$0.004Query EVM contract event logs via eth_getLogs
evm-nonce$0.002Returns the current nonce (confirmed transaction count) and pending nonce for any EVM wallet address
evm-token-security$0.007Honeypot, rug-pull, and scam detection for any EVM token
fact-check$0.500AI-powered claim verification
fda-recall-watch$0.008FDA recall and enforcement search across drugs, food/cosmetics, and medical devices (85,000+ actions)
fec-donor-intel$0.008FEC campaign finance lookup — search all US federal political donations by individual or organization name
federal-contract-intel$0.008US federal contract and grant intelligence for any company via USASpending
flight-tracker$0.008Recent departures or arrivals at any major airport via OpenSky Network (free, crowd-sourced ADS-B)
fomc-tracker$0.008US Federal Funds Rate, next FOMC meeting date + countdown, rate trend (hiking/holding/cutting), and full 2026 schedule
forex-rates$0.005Real-time fiat foreign exchange rates
funding-rates$0.020Returns current perpetual funding rates for 200+ assets on Hyperliquid DEX, sorted by absolute funding magnitude
gas-estimate$0.003Multi-chain gas price oracle: fast/standard/slow Gwei + USD cost for a transfer
gas-prices$0.005Current gas prices and EIP-1559 fee recommendations across 6 major EVM chains: Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain
generate-meme$0.005Generates a meme image from 211 built-in templates
geocode$0.003Forward and reverse geocoding via OpenStreetMap Nominatim
github-repo-intel$0.010GitHub repository intelligence: stars, forks, open issues, language, license, last push date, latest release version and date, topics, and whether the repo is actively maintained
global-equity-indices$0.010Global equity snapshot: 9 major indices (Nikkei 225, Hang Seng, ASX 200, Nifty 50, Shanghai, FTSE 100, DAX, CAC 40, Euro Stoxx 50) plus DXY
gov-votes$0.004US Congressional vote records from official government XML sources (senate
hedge-fund-holdings$0.025Returns top stock holdings from any institution's latest SEC 13F filing
hf-model-search$0.002Search HuggingFace Hub for ML models
hn-search$0.010Hacker News story and comment search via Algolia
housing-brief$0.350AI-synthesized US housing market briefing
http-headers$0.003HTTP response headers inspector and security grader
image-detect$0.040Detects the true image format of any URL via magic byte inspection — works even when the file extension or Content-Type header lies (common with proxied or CDN-hosted images)
imf-country-outlook$0.006IMF World Economic Outlook forecasts — current year + 3-year horizon for 180+ countries
insider-trades$0.012Recent SEC Form 4 insider trading activity for any US public company
form-144-intel$0.003SEC Form 144 planned insider sale filings — pre-Form 4 signal with seller, role, shares, market value, approx sale date
intel-pack$0.15Three-source intelligence pack in one x402 call: equity market snapshot (SPY/QQQ/IWM/VIX/risk signal) + top DeFi yield pools by APY + top prediction markets by volume
ip-intel$0.003Geolocation and network intelligence for IP addresses or domain names
ipo-calendar$0.020Returns live IPO calendar from Nasdaq — upcoming deals with expected pricing dates, recently priced offerings, new S-1 filings, and withdrawn deals
job-search$1.500Search remote and hybrid job listings by keyword and location
json-extract$0.004Extracts and parses JSON from mixed-content text
kimchi-premium$0.001Real-time Kimchi Premium for any Upbit-listed token: KRW price on Upbit vs USD price on global exchange (Kraken/OKX), FX-adjusted
korean-crypto-movers$0.008Top movers and volume leaders on Korean exchanges (Upbit, 263 KRW markets)
korean-market-movers$0.010Real-time movers and volume-spike leaders across all KRW-denominated markets on Upbit (South Korea's largest crypto exchange)
labor-brief$0.350AI-synthesized US labor market briefing
labor-market$0.008Returns US labor market leading indicators from FRED (free, no API key): initial jobless claims (weekly), continued claims, JOLTS job openings, nonfar
lbo-model$4.50Full LBO model: sources & uses, year-by-year operating model, debt schedule with cash sweep, IRR and MOIC, plus 3×3 entry/exit sensitivity tables
legal-search$0.008Searches 5M+ US court opinions (SCOTUS, federal circuits, district courts, state courts) via CourtListener
limitless-markets$0.006Returns active prediction markets from Limitless Exchange with current Yes/No probabilities
macro-brief$0.350AI-synthesized US macroeconomic situation briefing
macro-indicators$0.008Returns current US macroeconomic indicators: Fed Funds Rate, CPI (with year-over-year inflation %), Unemployment Rate, and Real GDP
manufacturing-brief$0.350AI-synthesized US manufacturing & industrial sector briefing
market-intelligence$0.50Returns settlement-verified x402 endpoint intelligence
market-movers$0.004Today's top market movers — equity gainers, losers, most-active, and crypto gainers/losers by 24h change
market-overview$0.10Single-call market snapshot: SPY, QQQ, IWM, and DIA price + intraday % change, VIX fear gauge, 10-year Treasury yield (^TNX), and a derived risk-postu
market-sentiment$0.015Combined crypto market sentiment signal: Crypto Fear & Greed Index (alternative
meme-generator$0.005Generate a meme image URL from text
news-sentiment$0.004Returns global news coverage and sentiment for any company, stock ticker, or topic
nft-metadata$0.002Fetch NFT metadata, traits, image URL, and collection floor price for any ERC-721 or ERC-1155 token
npi-lookup$0.004US NPI registry lookup — find any licensed US healthcare provider or organization by NPI number, name, state, or specialty
npm-lookup$0.007Node
options-chain$0.010CBOE delayed options chain for any US equity or index — returns stock price, per-contract IV, greeks (delta/gamma/theta/vega), OI, volume, and bid/ask
options-snapshot$0.015Options intelligence snapshot for any US equity — IV30, put/call volume ratio, top calls and puts by trading volume, and unusual-volume flags
page-intel$0.004Extracts structured content from any public URL: page title, meta description, H1-H3 headings, all links (with text and internal/external flag), and a 500-character text preview
page-links$0.004Extracts all hyperlinks from a webpage
ping$0.001Liveness + echo probe
place-details$0.020Enriched place and business details by name (OSM Nominatim)
policy-impact-mapper$0.007Analyzes regulatory and policy text to map its impact across industry sectors
polymarket-accuracy-score$0.004Historical Polymarket crowd accuracy score: % of markets where the final crowd majority correctly predicted the outcome, plus Brier score (calibration quality)
polymarket-category-performance$0.004Polymarket category activity breakdown: volume, liquidity, market count, and top market per category (crypto, politics, sports, ai, macro, equities)
polymarket-intel$0.003Top active Polymarket prediction markets by trading volume — question, Yes/No probability, 24h volume, liquidity, 1d/1wk price change, resolution date
polymarket-sentiment-shift$0.008Returns Polymarket prediction markets with the biggest recent probability shifts — useful for detecting sudden consensus changes on elections, crypto prices, and macro outcomes
polymarket-whale-entries$0.008Scans Polymarket for recent large-position trades filtered by min USDC value. Returns trader wallet, YES/NO side, USDC amount, entry price, market name, and on-chain tx hash. Smart-money signals, copy-trade detection, market sentiment.
portfolio-rebalance$0.005Pure-math portfolio rebalancing calculator
prediction-markets$0.05Returns top active Polymarket prediction markets sorted by trading volume
prediction-stock-pulse$0.016One call returns prediction market sentiment (Limitless Exchange) + live equity price for a specified ticker
protocol-revenue-leaders$0.001Returns DeFi protocols ranked by daily fees (revenue generated)
pypi-lookup$0.007Python package metadata from PyPI
readable-content$0.004Fetches any public URL and returns the full readable article text as clean Markdown, stripped of navigation, ads, and boilerplate
reddit-intel$0.012Searches Reddit posts and/or comments by keyword
regex-tester$0.003Safe regex testing and extraction
cron-parser$0.001Parse and explain any Unix cron expression — human description + next N run times. Supports @shortcuts
research-paper-search$0.003Academic paper search across 250M+ works via OpenAlex (free, no key)
research-synthesis$0.200AI-synthesized intelligence report for any query — aggregates Hacker News, OpenAlex academic papers, Reddit, arXiv preprints, and DuckDuckGo in parall
roast$0.040Witty AI roast of any target — person, company, product, code snippet, or concept
rss-reader$0.004Fetches and parses any public RSS 2
sanctions-screening$0.005OFAC SDN sanctions screening — checks whether a person, company, vessel, or aircraft appears on the US Treasury Specially Designated Nationals list
sec-filing-intel$0.015Real-time SEC EDGAR filing lookup by ticker or CIK
sec-insider-trades$0.008SEC EDGAR Form 4 insider trading data for any US public company — shows recent insider buys, sells, awards, and exercises with shares, price, and post-transaction ownership
sector-rotation$0.020S&P 500 sector rotation: relative performance of all 11 GICS sectors (XLK XLF XLE XLV XLI XLY XLP XLB XLRE XLU XLC) vs SPY benchmark
short-volume-intel$0.012Daily FINRA consolidated short-sale volume for any US equity ticker: short volume, total volume, and short ratio (short/total) for the last N trading days
social-intel$0.004Returns public profile data for any social platform account
stackoverflow-intel$0.010Stack Overflow question search. Returns top-scored questions with answer counts, accepted-answer status, tags, and body excerpts. Filter by tags (e.g. 'python;asyncio'). Useful for developer agents debugging errors or researching library usage.
solana-token-risk$0.35Rug-pull and risk scanner for Solana SPL tokens
solana-tx-explainer$0.07Given a Solana transaction signature, returns a decoded breakdown: fee payer, programs invoked (Jupiter, Raydium, Pump.fun, SPL Token, etc.), SPL toke
solar-intel$0.020Solar irradiance analysis and 7-day forecast for any location
sports-prediction$0.005Returns today's (or a given date's) sports games with team win-loss records, venue, scheduled time, and live score
sports-scores$0.004Live and recent sports scores for NBA, NFL, MLB, NHL, MLS, EPL, La Liga, Bundesliga, Serie A, Champions League, and more
ssl-cert$0.004Inspects the TLS/SSL certificate of any HTTPS host
stablecoin-watch$0.05Real-time depeg monitor for top USD stablecoins (USDT, USDC, DAI, USDS, and others ranked by market cap)
stock-brief$0.015US equity snapshot + Limitless prediction market sentiment in one call
stock-ohlcv$0.010Returns historical OHLCV (open/high/low/close/volume) candlestick data for a stock, ETF, or index
stock-price-multi$0.018Returns current US equity prices for up to 5 tickers in one call — STRC, AMD, MSTR, SLV, USO, or any NYSE/NASDAQ symbol
strategy-signal$0.090Technical analysis signal for any US equity, ETF, or crypto
timezone$0.002Timezone intelligence using the IANA database (418 zones) built into Node
twitter-intel$0.015Real-time Twitter/X data without an API key. lookup_user returns full profile (followers, bio, verification). search_tweets returns 10 recent tweets matching a keyword query. x402-settled upstream via twit.sh.
token-top-holders$0.015Returns top holders for any Ethereum ERC-20 token (by contract address), with concentration metrics
treasury-auction-calendar$0.018Returns upcoming US Treasury auction schedule (Bills, Notes, Bonds, TIPS, FRNs) from TreasuryDirect
treasury-yields$0.008Returns current US Treasury yield curve at 3M, 5Y, 10Y, and 30Y nodes from CBOE interest-rate indices (free, no API key)
tx-explainer$0.014Given a transaction hash and chain, returns a decoded breakdown: sender, recipient, ETH value transferred, gas used, transaction fee, decoded method n
tx-intel$0.006Decode and explain any EVM transaction — in one x402 payment
unit-converter$0.002Converts between 100+ units across 12 categories: length, weight, temperature, volume, speed, area, energy, pressure, data, time, angle, frequency
us-stock-price$0.018Returns current US equity price and intraday metrics (change %, volume, day high/low, 52-week range) for any NYSE/NASDAQ ticker
usgs-earthquake$0.002Real-time global earthquake events from USGS
wallet-balance$0.002Returns the native token balance (ETH, POL, BNB) for any EVM wallet address
wallet-credit-score$0.020Composite credit score (0–100) for any EVM wallet
wallet-screener$0.010Risk screening for EVM wallet addresses
weather$0.007Current weather conditions and 7-day daily forecast for any location worldwide
weather-alerts$0.003Active NOAA weather alerts for any US state — tornado warnings, flash flood watches, hurricane warnings, blizzard advisories, heat alerts, and 80+ other NWS event types
web-change-monitor$0.005Returns content-change signals for any public URL: ETag, Last-Modified, Content-Length, and Content-Type via HTTP HEAD
web-company-intel$0.003Extract structured company intelligence from any public website
web-scrape-links$0.004Extracts all hyperlinks from any public webpage
whale-radar$0.003Polymarket whale intelligence for a given proxy wallet address
world-bank-data$0.003World Bank open data — 1600+ development indicators for 200+ countries
x402-endpoint-intel$0.020Market intelligence for any x402 endpoint or operator wallet
wayback-intel$0.003Queries the Internet Archive Wayback Machine for historical snapshots of any public URL. Returns closest archived snapshot URL, capture timestamp (ISO 8601), and HTTP status at capture time. Optionally lists up to 10 recent snapshots to trace how a site evolved over time. Covers 800B+ archived pages spanning 27+ years of web history. No API key.
wikipedia-intel$0.002Wikipedia article search and lookup. Returns top matching articles with plain-text extract (~800 chars), description, thumbnail URL, page URL, and last-modified date. Supports multi-language editions. Useful for entity enrichment, concept explanation, and pre-flight research. No API key.
yield-farming-active$0.005Returns active DeFi yield farming pools sorted by 30-day average APY

Quick call (x402 flow)

# 1. GET the endpoint — server returns HTTP 402 with payment challenge
curl https://the-stall.intuitek.ai/cap/us-stock-price?ticker=AAPL
# → 402 {"x402Version":"1","accepts":[{"network":"base","asset":"USDC","maxAmountRequired":"30000","paymentRequirements":{...}}]}

# 2. Pay in USDC on Base via the x402 facilitator
# 3. Retry the request with the X-PAYMENT header — server returns data

See the x402 protocol spec for client SDKs (TypeScript, Python) that handle steps 2-3 automatically.

MCP (streamable HTTP)

{
  "mcpServers": {
    "the-stall": {
      "type": "streamable-http",
      "url": "https://the-stall.intuitek.ai/mcp"
    }
  }
}

Architecture

A domain-agnostic x402 capability chassis + a proprietary intelligence layer that decides what capability to put in it. Built as the answer to one question: where is the way into the agentic economy that a solo operator can actually take, given that the giants now own the rail?

The architecture decision

The giants (Coinbase, Stripe, AWS, Visa, the x402 Foundation) own the rail — settlement, wallets, the discovery index. That seat is taken; don't fight for it. A marketplace owner needs stalls filled — their revenue is the rail toll, not the merchandise. The endpoint layer is open by design: listing is free, a service is auto-cataloged on first settled payment.

So this splits into two parts:

The StallIntelligence Layer
isinfra — a reusable paid endpointproprietary signal analysis
ownsx402 wiring, payment, schemasthe doctrine + the archive
changesalmost neverevery scan cycle
answers"how does an agent pay me""what will an agent pay me for, where the seat is open"

[REDACTED]4 — what the [REDACTED] does

v0.4 retires catalog scanning as the primary scout (v0.1/v0.2 keyword counters bottomed out — at 2k depth every bucket was contested, catalog is 40k+ anyway). The seat doesn't live in the catalog; it lives in the flows between endpoints.

Five streams write into a SQLite archive (archive.db), four analyses read it:

StreamAuthWhat it gives
bazaarnoneevery Bazaar endpoint with first-seen/last-seen → new-endpoint feed
base_rpcnonelive x402 settlements from Base mainnet via public RPC — payer/recipient/amount per EIP-3009 event
cloudflareCF_API_TOKENAI-bot traffic share by user-agent and AS → school identity
duneDUNE_API_KEY + query IDsSQL-side aggregation convenience over the same on-chain data (optional)
x402scanX402SCAN_API_URLsettlement feed if x402scan publishes a public API (placeholder; none as of 2026-05)

base_rpc removes the auth wall for settlement-level signal. Public Base RPC + the USDC contract's public AuthorizationUsed events cover every x402 settlement on Base with no credentials.

AnalysisHookv0.4 status
growthcategory emergence — list adjacent under convergence pricepartial without history
seamcollapse a 2-3-endpoint chain, price at 70% of summedunlocked by base_rpc
convergenceship the narrow version agents converged onunlocked by accruing base_rpc over time
concentrationbetter latency/price/schema, surfaced to the dependent cluster(a) few-payers: unlocked; (b) cluster-dominant: gated

First end-to-end run with base_rpc: 1,222 real settlements pulled in 2.6s, 4 honest concentration signals emitted including one 100%-strength dependency (106 settlements from 2 distinct wallets). All from public data, no auth.

The archive thesis (the second timeline)

The same archive.db that drives near-term hook detection is also Schema #3 of a long-term thesis: settlement + identity claim + mandate, joined. Litigators, regulators, and insurers will need this join; nobody else is keeping it as a unified record right now. One build, two timelines.


Layout

the-stall/
  RUN_ME.sh                  self-documenting setup + boot
  src/
    server.js                the chassis: loads caps, paywalls them, serves free /catalog
    payment.js               the ONLY file touching x402 wiring (isolated for protocol churn)
    registry.js              auto-loads + validates drop-in capability modules
  capabilities/
    _TEMPLATE.js             the contract: copy → fill → it goes live next deploy
    ping.js                  liveness probe
    us-stock-price.js        US equity price + intraday metrics (Yahoo Finance)
    defi-portfolio.js        multi-chain wallet scanner (ETH/Base/Polygon/Arb)
    ... 206 more capability modules (see /catalog)

Quickstart (self-hosted)

./RUN_ME.sh           # installs, scaffolds .env, optionally boots on testnet
npm run scan          # intelligence scanner: pulls streams, runs analyses, prints seat report
npm start             # boot the stall (base-sepolia by default = \$0 risk)
curl localhost:4021/catalog

Stream 3 (Bazaar) runs every scout cycle with no setup. To unlock seam + convergence + concentration signals, provision either Dune (free tier) or x402scan.

Two gates before live USDC (if self-hosting)

  1. Wallet ownership. WALLET_ADDRESS must be a verified-owned Base address.
  2. Source ToS / licensing. Any data- or market-intelligence capability inherits the terms of its source.

Deploy (Railway)

Standard Node service. Set env vars (WALLET_ADDRESS, X402_NETWORK=base, FACILITATOR_URL=<CDP facilitator>, PORT), point at npm start. Keep the archive.db volume persistent across deploys (it's the asset).


Migrating from orbisapi

Several orbisapi proxy endpoints went offline in June 2026. The Stall covers all of them at lower prices with no x402 configuration required beyond a Base USDC wallet:

Dead orbisapi endpointThe Stall replacementSTALL priceOrbisapi price
orbisapi.com/proxy/cryptocurrency-news-api-456a6acrypto-news-impact$0.008$0.005
orbisapi.com/proxy/web-scrape-links-api-4e3ed0page-links$0.004$0.005
orbisapi.com/proxy/forex-rate-*forex-rates$0.005$0.005
orbisapi.com/proxy/changelog-generate-*changelog-generate$0.003$0.005
orbisapi.com/proxy/defi-yield-strategies-*defi-yield-strategies$0.005$0.005
orbisapi.com/proxy/content-moderation-*content-moderation$0.003$0.012
orbisapi.com/proxy/policy-change-impact-mapper-*policy-impact-mapper$0.008$0.005
orbisapi.com/proxy/polymarket-sentiment-shift-*polymarket-sentiment-shift$0.005$0.005

All STALL capabilities are x402-compatible — the same payment flow, USDC on Base, no re-integration needed. Update pay_to address and endpoint URL.


Status

  • Chassis boots, loads capabilities, paywalls them, serves free introspection
  • [REDACTED]4 — five-stream [REDACTED] + SQLite archive + four analysis modules
  • base_rpc stream: no-auth on-chain settlement reader (Base public RPC)
  • Concentration (few-payers path) producing real signals from live mainnet
  • Wallet ownership verified (GATE 1) — Base mainnet, EIP-191 signature recovered
  • 210 capabilities LIVE at https://the-stall.intuitek.ai (Base mainnet, v4.64.0, SSE transport added)
  • MCP endpoint at /mcp (streamable-http, accepts application/json)
  • A2A Agent Card at /.well-known/agent.json
  • x402 discovery document at /.well-known/x402
  • Official MCP registry: ai.intuitek.the-stall/the-stall
  • Payment logging (JSONL) — every settled call recorded
  • First settled call → x402 Bazaar seeded (block 46944973, Base mainnet, 2026-06-05)
  • Settlement intelligence scanner wired to heartbeat cadence (v0.4, 6.6M+ settlements archived)
  • Listed on Glama

Built by IntuiTek¹ — autonomous infrastructure for the agentic economy.