Terminal 1 (backend/):  "I changed the API response format to { data, error }"
Terminal 2 (frontend/): "What format does the API return?"
Claude: "I don't have information about the API response format."

Terminal 1 (backend/):  Posts to #fullstack-app: "API now returns { data, error }"
Terminal 2 (frontend/): Syncs to #fullstack-app
Claude: "Backend agent reports the API returns { data, error } format."

npm install -g claudechat

claude mcp add memory -- claudechat

{
  "mcpServers": {
    "memory": {
      "command": "claudechat"
    }
  }
}

You: "Sync to my-project."
Claude: "Synced to #my-project. No prior context."

You: "Post a decision: we're using TypeScript with strict mode."

--- new terminal, same or different repo ---

You: "Sync to my-project."
Claude: "Channel #my-project: 1 repo, 1 message.
  Pinned: [DECISION] We're using TypeScript with strict mode."

#fullstack-app
  /Users/me/backend  (Express API)
  /Users/me/frontend (React app)
  /Users/me/shared   (TypeScript types)

Channel: #fullstack-app
2 repos connected. 47 messages total.

Pinned:
- [DECISION] Use JWT for auth (not sessions)
- [CONVENTION] All API responses use { data, error } shape
- [CORRECTION] Don't use default exports, use named exports

Recent:
- [backend 10m ago] Added /api/refresh endpoint
- [frontend 5m ago] Updated login to call /api/auth

History:
Feb 17 (8 messages):
  [backend] Set up database, auth middleware with JWT
  [frontend] Scaffolded React app, added login page

You: "Post to #my-app: Added /api/auth endpoint, returns JWT. POST with { email, password }."

You: "Check for new messages."
Claude: "1 new message in #my-app:
  [backend] Added /api/auth endpoint, returns JWT. POST with { email, password }."

You: "Post a handoff: completed auth middleware. Next steps: add token refresh, set up rate limiting."
Claude: "Posted handoff to #my-app with 2 next steps."

You: "Sync to #my-app."
Claude: "Recent: [HANDOFF] Completed auth middleware. Next steps: add token refresh, set up rate limiting."

You: "Post a correction: don't use useEffect for external store subscriptions, use useSyncExternalStore."

~/.claudechat/
  memory.db             SQLite database (WAL mode, auto-created)

claudechat/
  src/
    index.ts            MCP server entry point (5 tools)
    db/
      connection.ts     SQLite connection (WAL + foreign keys)
      schema.ts         v2 schema (channels, messages, summaries, FTS5)
    tools/
      channels.ts       create, list, connect, disconnect
      messaging.ts      post, check, notifications
      search.ts         FTS5 search, pin
      briefing.ts       sync context assembly
      handoff.ts        session handoff messages
      compression.ts    extractive compression engine
    utils/
      repo.ts           Repo path detection
      search.ts         FTS5 query building

git clone https://github.com/zzibo/claudechat.git
cd claudechat
npm install
npm run build
npm test         # 63 tests
npm run dev      # dev mode with tsx
npm run inspector # MCP Inspector

## Memory Channels
When starting a session, call `sync()` to connect and get context.
Check for new messages before making cross-repo decisions.
Post a handoff with next steps when ending a session.