facebook-marketplace-mcp: an MCP server that queries Facebook Marketplace via GraphQL and Chrome cookies
Signalman23 · x · 2026-09-08
facebook-marketplace-mcp (118 stars) is an MCP server letting agents like Claude Code search Facebook Marketplace:
- No runtime browser automation: it replays Facebook's internal POST /api/graphql/ calls (docid + variables), like pypush did for iMessage
- Auth via existing Chrome Facebook session cookies, extracted through the macOS Keychain
- Requires macOS, Chrome logged into Facebook, Node.js 20+; one claude mcp add command wires it into Claude Code
A useful protocol-reversing reference for building marketplace aggregation or price-comparison agents.
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