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.
Dst Us2
4.3/10Whether current UTC month is US DST-heavy
Dtd Ok
4.3/10DTD ELEMENT count, body discarded
Early Data
4.3/10Early-Data 1 token, value discarded
Ebnf Ok
4.3/10EBNF production count, body discarded
Em Mm
4.3/10Ems at 12pt to millimeters, number discarded
En Mm
4.3/10Ens at 12pt to millimeters, number discarded
Euckr Ok
4.3/10EUC-KR lead-byte band, bytes discarded
F C
4.3/10Fahrenheit to Celsius, number discarded
Farm128
4.3/10FarmHash128 hex length, input discarded
Farm64
4.3/10FarmHash64 hex length, input discarded
Fm M
4.3/10Femtometres to meters, number discarded
Gbk Ok
4.3/10GBK lead-byte band, bytes discarded
Greg Ok
4.3/10Gregorian Y-M-D shape, value discarded
Guuid Ok
4.3/10Google UUID timeuuid layout, value discarded
H3 Alpn Ok
4.3/10ALPN h3 token, value discarded
Hibp K
4.3/10k-anonymity 5-hex prefix, value discarded
Hibp Ok
4.3/10HaveIBeenPwned k-prefix shape, value discarded
Hp Kw
4.3/10Mechanical horsepower to kW, number discarded
Hy End
4.3/10UTC last day of the current half-year
Hz Gb Ok
4.3/10HZ-GB ~{ ~} frame, input discarded
Hz Ok
4.3/10HZ ~{ ~} frame count, input discarded
Ident Js
4.3/10JS identifier charset, value discarded
Ident Py
4.3/10Python identifier charset, value discarded
Ihex Ok
4.3/10Intel HEX type-00 count, input discarded
Isni Ok
4.3/10ISNI 16-digit shape, value discarded
Iso Ord2
4.3/10UTC ISO ordinal YYYY-DDD shape
Isrc Ok
4.3/10ISRC 12-char shape, value discarded
Iswc Ok
4.3/10ISWC T- shape, value discarded
Jats Ok
4.3/10JATS article-id count, markup discarded
Jdn Ok
4.3/10Julian Day Number integer band
Js Uesc
4.3/10JS unicode-escape count, input discarded
Jsesc N
4.3/10JS unicode-escape count, input discarded
Kip Kg
4.3/10Kips to kilograms, number discarded
Ok
4.3/10KOI8-U high-bit band, bytes discarded
Lex Ok
4.3/10Lex rule count, body discarded
Lm Hash
4.3/10LM hash 16-hex shape, value discarded
Len
4.3/10MD2 hex length, input discarded
Len
4.3/10MD6 hex length, input discarded
Metro64
4.3/10MetroHash64 hex length, input discarded
Mods Ok
4.3/10MODS titleInfo count, markup discarded
Month 2
4.3/10UTC second day of the current month
Murmur32
4.3/10MurmurHash3-32 hex length, input discarded
Ng G
4.3/10Nanograms to grams, number discarded
Nl L
4.3/10Nanoliters to liters, number discarded
Nl Run
4.3/10newline run length band, text discarded
Obf Id
4.3/10obfuscated integer id band, value discarded
Owl Ok
4.3/10OWL class axiom count, body discarded
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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.