Calimero Core

Peer-to-peer application platform with local-first governance, CRDT state sync, and WASM execution.

Full documentation: https://calimero-network.github.io/core/ — organized into four tracks: Build (write apps), Operate (run nodes), Protocol Reference (reimplement / understand the model), and Contribute (work on core).

Components

Crate	Description
calimero-node	NodeManager actor -- orchestrates network events, sync, blobs
calimero-context	ContextManager actor -- contexts, groups, governance DAGs
calimero-network	NetworkManager actor -- libp2p swarm, gossipsub, streams
calimero-store	Column-family KV abstraction over RocksDB
calimero-runtime	Wasmer WASM execution engine with 50+ host functions
calimero-server	Axum HTTP server -- REST, JSON-RPC, WS, SSE
calimero-sdk	App development SDK with proc macros
mero-auth	JWT auth service with pluggable providers
calimero-dag	Generic in-memory causal DAG
calimero-storage	CRDT collections and storage interface
merod	Node daemon (init, config, run)
meroctl	Operator CLI (app, context, group, blob management)

Documentation

I want to…	Start here
Write a Calimero app	Build — quickstart, SDK, collections, examples
Run and configure a node	Operate — install, merod/meroctl, config, admin API
Reimplement a node / understand the model	Protocol Reference — concepts, the operation DAG, sync, the spec
Work on Calimero Core itself	Contribute — architecture, crate guide, dev workflow
Look up a term	Glossary

The docs live in docs-site/ (Astro Starlight). The previous hand-built site is preserved at /architecture-legacy/.

Related Repositories

• calimero-network/merobox -- E2E testing framework
• calimero-network/mero-tee -- TEE infrastructure (KMS, locked images)
• calimero-network/calimero-client-js -- JavaScript client
• calimero-network/calimero-client-py -- Python client

License

MIT OR Apache-2.0