MCP servers

Convert markdown to HTML and extract headings locally. No network and no key.

Keyless MCP server for MAST: Hubble, Webb, TESS observations by sky position.

Mastodon instance info and trends. No key required.

Prime checks, factors, GCD, and basic statistics computed locally. No network and no key.

Search Java libraries and artifacts on Maven Central. No key required.

Boston transit from MBTA. No key required.

Minecraft server status via mcstatus.io: online status, players, version.

Search the MDN web docs for HTML, CSS, and JavaScript. No key required.

Medical preprints from medRxiv. No key required.

Keyless MCP server for memegen.link: meme templates, captioned image URL builder.

Random cat facts from the free MeowFacts API.

Tempo and timing math for musicians. No network and no key.

Crypto prices from MEXC. No key required.

Link previews from Microlink. No key required.

MIDI note math: note names, frequencies, and note numbers. No network and no key.

Minecraft player profiles and server status. No key required.

Search the MITRE ATT&CK enterprise knowledge base for adversary techniques and tactics.

Search Mixcloud cloudcasts and read user profiles. No key required.

Teams, schedules, and standings from the official MLB Stats API. No key required.

Use this MCP server to Modrinth, search Minecraft mods, filter by loader and game version,...

Moon phase, illumination, and age calculated locally. No network and no key.

Magic the Gathering cards from MTG API. No key required.

On this day history from MuffinLabs. No key required.

Use this MCP server to MusicBrainz artists, releases, recordings, and open music metadata. Tools...

MyVariant.info variant annotation API.