The MCP Server Directory
Every Model Context Protocol server, scored on reliability, documentation, maintenance, and adoption. Independent, opinionated, refreshed daily from the official registry.
What this is
The MCP Server Directory is a live, independently maintained index of Model Context Protocol servers published to the official registry. Each server is scored 0–10 on four dimensions: reliability, documentation quality, maintenance velocity, and adoption. The directory is free, updated daily, and built by MegaOne AI.
Clinicaltrials MCP
4.1/10ClinicalTrials.gov search and PubMed.
Core MCP
4.1/10Academic search from CORE. No key required.
Crossref MCP
4.1/10Search scholarly works and resolve DOIs through Crossref. No key required.
Dadjoke MCP
4.1/10Keyless MCP server for icanhazdadjoke: random dad jokes, search, lookup by id.
Dailymotion MCP
4.1/10Search videos on Dailymotion. No key required.
Data Gov Uk MCP
4.1/10UK government open data search from data.gov.uk. No key required.
Datacite MCP
4.1/10Search research datasets and DOIs from DataCite. No key required.
Dblp MCP
4.1/10Search computer science publications on DBLP. No key required.
Deezer MCP
4.1/10Search tracks and albums on Deezer. No key required.
Emoji MCP
4.1/10Search emoji by name or keyword locally. No network and no key.
Europepmc MCP
4.1/10Search Europe PMC life science literature including preprints. No key required.
F Droid MCP
4.1/10F-Droid app catalog search. No key required.
Fbi Wanted MCP
4.1/10FBI Wanted API: most wanted list, search, and top rewards. No key required.
Figshare MCP
4.1/10Search research articles and datasets on Figshare. No key required.
Firefox Addons MCP
4.1/10Search Firefox browser extensions on AMO. No key required.
Flathub MCP
4.1/10Search Linux apps on Flathub. No key required.
Genius MCP
4.1/10Search song lyrics and artists on Genius. No key required.
Gitea MCP
4.1/10Gitea.com public API: search repos and users.
Google Autocomplete MCP
4.1/10Google search suggestions. No key required.
Guardian MCP
4.1/10News and article search from The Guardian. No key required.
Gutendex MCP
4.1/10Project Gutenberg book search (Gutendex).
Inaturalist MCP
4.1/10Search species and recent observations from iNaturalist. No key required.
Itunes MCP
4.1/10iTunes Search API: apps, podcasts, and media.
Jikan MCP
4.1/10Search anime and manga from MyAnimeList through the Jikan API. No key required.
Job Search MCP
4.1/10Search remote job listings from the Remotive public feed. No key required.
Kitsu MCP
4.1/10Search anime on Kitsu. No key required.
Loc MCP
4.1/10Search the Library of Congress collections. No key required.
Maven Info MCP
4.1/10Search Java libraries and artifacts on Maven Central. No key required.
Mdn Search MCP
4.1/10Search the MDN web docs for HTML, CSS, and JavaScript. No key required.
Metmuseum MCP
4.1/10Metropolitan Museum collection search.
Milvus MCP
4.1/10MCP server for Milvus: collections, stats, search. Works with any instance.
Nasa Images MCP
4.1/10Search the NASA image and video library. No key required.
Nix Packages MCP
4.1/10Nix package search from nixpkgs. No key required.
Nuget MCP
4.1/10Search .NET packages on NuGet. No key required.
Open Library MCP
4.1/10Open Library search, works, authors, editions, and ISBN.
Openverse MCP
4.1/10Search openly licensed images from the Openverse catalog. No key required.
Osf MCP
4.1/10Open research from the Open Science Framework. No key required.
Patents MCP
4.1/10Search US patents and patent applications from Google Patents. No key required.
Peertube MCP
4.1/10Search PeerTube.tv federated videos and read instance info. No key required.
Pexels MCP
4.1/10Search free stock photos on Pexels. No key required.
Plos MCP
4.1/10Open research from PLOS. No key required.
Poetry MCP
4.1/10Search poems by title, author, or lines from PoetryDB. No key required.
Sourcegraph MCP
4.1/10Search public code on Sourcegraph. No key required.
Stackexchange MCP
4.1/10Search questions and read answers across Stack Exchange sites. No key required.
Swaggerhub MCP
4.1/10Search the SwaggerHub API registry for public API definitions. No key required.
Theaudiodb MCP
4.1/10TheAudioDB artist, album, and track search.
Tvmaze MCP
4.1/10TVMaze show search and schedules.
Vam MCP
4.1/10Victoria and Albert Museum collection search. No key required.
Free · No spam
New servers, score changes, breakages
Every Monday: what shipped, what broke, what's worth trying. Five minutes. No filler.
Four dimensions, weighted
- Reliability (30%) — repository present, permissive license, not archived, official status.
- Documentation (20%) — description length, website presence, README quality.
- Maintenance (25%) — how recently the code was pushed; versioning discipline.
- Adoption (25%) — GitHub stars (log-scaled), remote availability, official endorsement.
What is MCP?
MCP stands for Model Context Protocol. It is an open standard introduced by Anthropic in late 2024 that lets AI assistants like Claude connect to external tools, data sources, and services through a common interface. An MCP server is a small program that exposes one capability (file access, a database, an API) to any MCP-compatible AI client.
Where does the data come from?
Every server in this directory is pulled from the official Model Context Protocol Registry at registry.modelcontextprotocol.io. We also enrich each entry with GitHub metadata (stars, last commit, license, primary language) where a repository is linked. The full re-scan runs daily.
How are servers scored?
Each server gets a 0–10 overall score, weighted from four sub-scores: reliability (30%), documentation (20%), maintenance (25%), and adoption (25%). The full methodology is visible on this page under "How scoring works".
Is this affiliated with Anthropic?
No. MegaOne AI is independent. Anthropic created the MCP standard and maintains the reference implementations, but this directory is built separately and rates all servers including Anthropic's own.
How often does the directory update?
The pipeline re-fetches the full registry and re-scores every active server once per day. Individual entries are refreshed whenever a new version is published to the official registry.
Is it free?
Yes. Browsing, filtering, and searching the directory is free. The weekly email briefing is free. There is no account required.