MCP Servers

lexicon-mcp

Enables querying and updating a Lexicon DJ library via its Local API, supporting read tools always on and write tools when enabled.

README

lexicon-mcp

TypeScript MCP server for the Lexicon DJ Local API — query and update your library from Cursor, Claude Desktop, or any MCP client.

API docs: developers/api
OpenAPI: api-docs.yaml

Requires Lexicon running with Settings → Integrations → Local API enabled (default http://localhost:48624).

Install

npx lexicon-mcp

After npm link from a clone:

{
  "mcpServers": {
    "lexicon": {
      "command": "lexicon-mcp"
    }
  }
}

Local development:

{
  "mcpServers": {
    "lexicon": {
      "command": "node",
      "args": ["/absolute/path/to/lexicon-mcp/dist/bin/cli.js"]
    }
  }
}

Run npm run build after pulling changes. Restart Cursor to reload MCP tools.

lexicon-mcp --help and lexicon-mcp -v work in a terminal; the bare command exits with a note (MCP uses stdio pipes).

Environment

Variable	Default	Purpose
`LEXICON_HOST`	`localhost`	API host
`LEXICON_PORT`	`48624`	API port
`LEXICON_URL`	—	Full base URL override
`LEXICON_MCP_ALLOW_WRITES`	off	Set to `1` to enable PATCH/POST/DELETE

Tools

Read (always on)

Tool	API
`lexicon_ping`	health + track count
`lexicon_list_tags`	GET `/v1/tags`
`lexicon_list_tracks`	GET `/v1/tracks`
`lexicon_get_track`	GET `/v1/track`
`lexicon_search_tracks`	GET `/v1/search/tracks`
`lexicon_list_incoming`	filtered incoming backlog
`lexicon_library_stats`	composed stats
`lexicon_list_playlists`	GET `/v1/playlists`
`lexicon_get_playlist`	GET `/v1/playlist` or `/v1/playlist-by-path`
`lexicon_get_playing`	GET `/v1/playing`
`lexicon_get_queue`	GET `/v1/queue`

Write (requires `LEXICON_MCP_ALLOW_WRITES=1`)

Tool	API
`lexicon_update_track`	PATCH `/v1/track`
`lexicon_control`	POST `/v1/control`
`lexicon_request`	any `/v1/*` method

Escape hatch

Tool	Notes
`lexicon_request`	Full API — prefer this over deprecated `lexicon_raw_request`
`lexicon_raw_request`	GET only (deprecated)

Search filter examples

{ "tags": "irh" }
{ "tags": "!house" }
{ "tags": "~house, handbag" }
{ "artist": "Lady Gaga" }
{ "location": "*DJ-incoming*" }

Control examples (writes enabled)

{ "action": "Incoming_SelectedDone" }
{ "action": "Application_Tags_AddShortcut", "parameters": { "amount": 1 } }

Development

npm install
npm run build
npm test
npm link   # optional global bin

Publish

npm login
npm publish --access public

License

MIT

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