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.
Cord M3
4.3/10Cords to cubic meters, number discarded
Cup Imp
4.3/10Imperial cups to milliliters, number discarded
Dash Ml
4.3/10Culinary dashes to milliliters, number discarded
Dram Ml
4.3/10US fluid drams to milliliters, number discarded
Feature Pol
4.3/10Feature-Policy feature count, value discarded
Ok
4.3/10FNV-1a 128 hex length, input discarded
Highway64
4.3/10HighwayHash64 hex length, input discarded
Len
4.3/10HMAC-SHA1 hex length, input discarded
Hydra Ok
4.3/10Hydra operation count, body discarded
If Range Ok
4.3/10If-Range etag-or-date shape, value discarded
Keccak256
4.3/10Keccak-256 hex length, input discarded
Keccak512
4.3/10Keccak-512 hex length, input discarded
Ksuid B62
4.3/10KSUID Base62 charset, value discarded
Ksuid Hex
4.3/10KSUID 40-hex shape, value discarded
Ksuid Pay
4.3/10KSUID payload charset, value discarded
Leap Day
4.3/10Whether current UTC year has Feb 29
Macce Ok
4.3/10Mac Central Europe high-bit band, bytes discarded
Moon Age
4.3/10Coarse moon age 0-29 from UTC day
Murmur128
4.3/10MurmurHash3-128 hex length, input discarded
Para Ok2
4.3/10paragraph count, text discarded
Pascal N
4.3/10PascalCase token count, value discarded
Path Seg
4.3/10path/case segment count, value discarded
Pipe Seg
4.3/10pipe token count, value discarded
Priority Ok
4.3/10Priority u=/i= pair count, value discarded
Puny Len
4.3/10Punycode output length band, host discarded
Purl Pypi
4.3/10pkg:pypi package-url shape, value discarded
Pwsh Esc
4.3/10PowerShell backtick-escape count, input discarded
Py Esc N
4.3/10Python string escape count, input discarded
Q Start2
4.3/10UTC first day of the current quarter
Rowid Int
4.3/10integer rowid band, value discarded
Rps Hz
4.3/10Revolutions per second to hertz, number discarded
Scsu Sig
4.3/10SCSU BOM presence, input discarded
Semi Seg
4.3/10semicolon token count, value discarded
Sent Ok2
4.3/10sentence count, text discarded
Shacl Ok
4.3/10SHACL NodeShape count, body discarded
Sysml Ok
4.3/10SysML block count, body discarded
Traceparent
4.3/10W3C traceparent 4-part shape, value discarded
Sig
4.3/10UTF-1 signature bytes, input discarded
Ok
4.3/10WSDL 2.0 interface count, markup discarded
X402 Scraper
4.3/10Autonomous HTTP 402 Web Scraping Mesh on Base for $0.02 USDC.
Ok2
4.3/10Ascii85 frame, input discarded
Asciihex Ok
4.3/10Intel HEX record count, input discarded
Bigserial Pg
4.3/10pg bigserial 64-bit band, value discarded
Boardft M3
4.3/10Board feet to cubic meters, number discarded
Discord Worker
4.3/10Discord snowflake worker bits, id discarded
Grapheme Run
4.3/10grapheme-cluster run, text discarded
Hashids Salt
4.3/10Hashids alphabet length, value 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.