MCP servers for Codex CLI

NS Dutch Railways API: departures, stations, journeys, disruptions, fares.

People currently in space from Open Notify. No key required.

Live Formula 1 telemetry from OpenF1. No key required.

Search openly licensed images from the Openverse catalog. No key required.

MCP server for Pi-hole: status, stats, blocking toggle. Works with any instance.

MCP server for Smithsonian collections: artifacts, art, specimens. Free key.

SonarQube MCP — projects, metrics, quality gate, issues, worst-metric ranking.

Open music metadata: artists, releases, and recordings from MusicBrainz. No API key. By UnClick.

Task queue, decisions and memory for coding agents. Local SQLite, no network. Requires Bun.

Read-only NATS and JetStream observability: trace a request across streams, rank what is broken.

Search, extend, and act on your team's Naumu knowledge graph: notes, threads, and nodes.

Search, browse and pick from the free NerdyChefs.ai prompt library from any MCP client.

Secure MCP server for querying Google NotebookLM notebooks

NovelAI image generation as MCP tools: txt2img, img2img, inpaint, upscale, Director, ControlNet.

Address geocoding and bike, scooter, motorcycle, wheelchair and walking routes across Europe.

OPC Suite — CRM, sales, inventory, accounting, HRM, payroll, claims, projects from any AI agent.

German soccer league match data from OpenLigaDB. No key required.

MCP server for full integration with Oracle Database.

Links your AI assistant app to the Paramability tab open in Chrome. Runs on your computer only.

Path-scoped project memories, rules and skills for coding agents, on your machine or Pathrule Cloud.

Read-only perp funding, OI and positioning across 4 onchain venues. Not financial advice.