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.
Issn Ok
3.9/10ISSN digit shape
Issn Shape
3.9/10ISSN shape, value discarded
Latlng Box Ok
3.9/10Lat/lng bounding-box shape
Lux To Fc
3.9/10Lux to foot-candles
Mime Octet
3.9/10Public MIME token for octet.
Ml To Tsp
3.9/10Milliliters to teaspoons
Mod Ok
3.9/10n modulo m, numbers discarded
Month Days
3.9/10Days in the current UTC month
Nmi To Km
3.9/10Nautical miles to kilometers
Orcid Ok
3.9/10ORCID shape, id discarded
Ordinal Utc
3.9/10UTC ISO ordinal date
Pa To Bar
3.9/10Pascals to bar
Psi Bar
3.9/10PSI to bar, number discarded
Pushid Shape
3.9/10Firebase PushID shape
Range Ok
3.9/10Range header shape
Redirect Hop Ok
3.9/10Redirect hop count band 0-5
Rfc Number Ok
3.9/10RFC number shape
Rfc Section Ok
3.9/10RFC section number shape
Sdbm Ok
3.9/10sdbm hex, input discarded
Semver Ok
3.9/10SemVer shape
Spdx Ok
3.9/10SPDX license id shape
St Ak
3.9/10USPS state code AK.
St Al
3.9/10USPS state code AL.
St Ar
3.9/10USPS state code AR.
St Az
3.9/10USPS state code AZ.
St Co
3.9/10USPS state code CO.
St Ct
3.9/10USPS state code CT.
St Dc
3.9/10USPS state code DC.
St De
3.9/10USPS state code DE.
St Ga
3.9/10USPS state code GA.
St Hi
3.9/10USPS state code HI.
St Ia
3.9/10USPS state code IA.
St Id
3.9/10USPS state code ID.
St Il
3.9/10USPS state code IL.
St In
3.9/10USPS state code IN.
St Ks
3.9/10USPS state code KS.
St Ky
3.9/10USPS state code KY.
St La
3.9/10USPS state code LA.
St Ma
3.9/10USPS state code MA.
St Md
3.9/10USPS state code MD.
St Me
3.9/10USPS state code ME.
St Mi
3.9/10USPS state code MI.
St Mn
3.9/10USPS state code MN.
St Mo
3.9/10USPS state code MO.
St Ms
3.9/10USPS state code MS.
St Mt
3.9/10USPS state code MT.
St Nc
3.9/10USPS state code NC.
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.