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.
Allow Ok
4.3/10Allow method token count, value discarded
Alnum N
4.3/10alphanumeric run count, text discarded
Argon Len
4.3/10Argon2 hex length, input discarded
Ok
4.3/10argon2id encoded hash shape, value discarded
Arxiv Uri
4.3/10arXiv URI id shape, value discarded
Ascii Ok
4.3/107-bit ASCII charset, value discarded
Atm Psi
4.3/10Atmospheres to PSI, number discarded
Au Km
4.3/10Astronomical units to kilometers, number discarded
Auth Info
4.3/10Authentication-Info nextnonce shape, value discarded
Bar Atm
4.3/10Bar to atmospheres, number discarded
Id
4.3/10Base36 id charset, value discarded
Id
4.3/10Base62 id charset, value discarded
Bcrypt Ok
4.3/10bcrypt $2 hash shape, value discarded
Bech Id
4.3/10Bech32 id hrp shape, value discarded
Bigint Ok
4.3/10unsigned 64-bit decimal shape, value discarded
Binhex Ok
4.3/10BinHex colon-frame, input discarded
Len
4.3/10BLAKE2b hex length, input discarded
Len
4.3/10BLAKE2s hex length, input discarded
Blank Ok
4.3/10blank-line count, text discarded
Camel N
4.3/10camelCase hump count, value discarded
Cf Ip
4.3/10CF-Connecting-IP shape, value discarded
Cid Url
4.3/10cid: URL shape, value discarded
Cid V0
4.3/10CIDv0 Qm prefix, value discarded
Cid V1
4.3/10CIDv1 multibase prefix, value discarded
Len
4.3/10CityHash64 hex length, input discarded
Cl L
4.3/10Centiliters to liters, number discarded
Cm M
4.3/10Centimeters to meters, number discarded
Cobol Ok
4.3/10COBOL-CASE charset, value discarded
Connect Ok
4.3/10Connection token count, value discarded
Contentid Ok
4.3/10content-address hex length, value discarded
Len
4.3/10CRC-8 hex length, input discarded
Crlf Ok
4.3/10CRLF pair count, text discarded
Crock Id
4.3/10Crockford Base32 id charset, value discarded
Css Ok
4.3/10CSS rule count, body discarded
Cssesc Ok
4.3/10CSS escape sequence count, input discarded
Csv Esc
4.3/10CSV quoted-field count, input discarded
Csv Rows Ok
4.3/10CSV data-row count, cells discarded
Ct G
4.3/10Carats to grams, number discarded
Cue Ok
4.3/10CUE definition count, body discarded
Cuid Ok
4.3/10CUID prefix-c shape, value discarded
Cup Ml
4.3/10US cups to milliliters, number discarded
Data Url
4.3/10data: URL media-type shape, value discarded
Date Http
4.3/10HTTP-date IMF-fixdate shape, value discarded
Dhall Ok
4.3/10Dhall let-binding count, body discarded
Did Key
4.3/10did:key multibase shape, value discarded
Did Ok
4.3/10DID method shape, value discarded
Did Web
4.3/10did:web host shape, value discarded
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.