signal-mcp: open-source local-first MCP server exposing Signal to AI clients

googlarz · reddit · 2026-09-22

A developer released signal-mcp, an open-source, self-hosted MCP server that connects AI clients like Claude to your own Signal account and history via a local signal-cli setup. It keeps persistent local history, supports full-text search, resolves contacts/conversations instead of opaque IDs, retrieves focused context for assistants, and exposes Signal capabilities as MCP tools while keeping the user in control of consequential messaging actions. Built for privacy-conscious self-hosters who want Signal history queryable without another cloud data silo.

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