@uselock/mcp

MCP server for Lock — give AI agents access to product decisions.

Lock captures product decisions with full context. This MCP server lets AI coding agents query and record decisions during development sessions.

Setup

Add to your Claude Code or Cursor MCP config:

{
  "mcpServers": {
    "lock": {
      "command": "npx",
      "args": ["@uselock/mcp"],
      "env": {
        "LOCK_API_URL": "http://localhost:3000",
        "LOCK_API_KEY": "lk_..."
      }
    }
  }
}

Tools

| Tool | Description | |------|-------------| | lock_context | Get all active decisions as markdown | | lock_check | Pre-build constraint check against existing decisions | | lock_commit | Record a new decision | | lock_query | Filter decisions by product, feature, scope, status, tags | | lock_search_semantic | Semantic search across decisions | | lock_get | Get a single decision by ID | | lock_get_lineage | Get the supersession/revert chain for a decision | | lock_list_products | List all products | | lock_list_features | List features (optionally filtered by product) |

Documentation

Full documentation: github.com/GuitareCiel/lock/tree/main/docs/mcp.md

License

MIT