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.
Html Numesc
4.3/10HTML numeric-entity count, input discarded
Indian Leap
4.3/10Whether Indian national year is leap
Instagram Id
4.3/10Instagram-style shard id shape, value discarded
Islamic Ok
4.3/10Islamic calendar month 1-12 band
Iso Week Thu
4.3/10UTC Thursday of the current ISO week
Iso Week52
4.3/10Whether current UTC year has 52 ISO weeks
Julian Leap
4.3/10Julian leap-year check from UTC
Longcwt Kg
4.3/10Long hundredweight to kilograms, number discarded
Multihash Id
4.3/10multihash identity codec, value discarded
Neper Db
4.3/10Nepers to decibels, number discarded
Pascal Hump
4.3/10PascalCase hump count, value discarded
Percent Plus
4.3/10form-urlencoded percent/plus mix, input discarded
Pinch Ml
4.3/10Culinary pinches to milliliters, number discarded
Pint Imp L
4.3/10Imperial pints to liters, number discarded
Pushid Rand
4.3/10Firebase push-id entropy charset, value discarded
Quart Imp L
4.3/10Imperial quarts to liters, number discarded
Register T
4.3/10Register tons to cubic meters, number discarded
Shortuuid Hex
4.3/10shortuuid hex charset, value discarded
Sidereal Hr
4.3/10Approximate sidereal hour band
Smidgen Ml
4.3/10Smidgens to milliliters, number discarded
Snake Ok2
4.3/10snake_case segment count, value discarded
Snake Seg
4.3/10snake_case segment count, value discarded
Snowflake Seq
4.3/10Snowflake sequence bits, id discarded
Snowflake Worker
4.3/10Snowflake worker-id bits, id discarded
Solstice Ok
4.3/10Whether current UTC month is a solstice month
Sort Hyphen
4.3/10UK sort-code hyphenated shape, value discarded
Sortcode Ok
4.3/10UK sort code 6-digit shape, value discarded
Sqids Block
4.3/10Sqids blocklist-safe charset, value discarded
Ssri Sha384
4.3/10SSRI sha384 digest shape, value discarded
Stone Lb
4.3/10Stones to pounds, number discarded
Tbsp Imp
4.3/10Imperial tablespoons to milliliters, number discarded
Therm Mj
4.3/10Therms to megajoules, number discarded
Timeuuid Unix
4.3/10Cassandra unixTimeUUID layout, value discarded
Title Run
4.3/10Title Case token length band, text discarded
Tonne Kg
4.3/10Tonnes to kilograms, number discarded
Tonref Kw
4.3/10Tons of refrigeration to kW, number discarded
Typeid Suffix
4.3/10TypeID base32 suffix, value discarded
Ulid Crock2
4.3/10ULID Crockford no-hyphen, value discarded
Upc Check
4.3/10UPC-A check-digit shape, value discarded
Upper Run
4.3/10UPPERCASE run length band, text discarded
Run
4.3/10UTF-16 code-unit run, text discarded
Ok
4.3/10UTF-16LE BOM presence, bytes discarded
Ok
4.3/10UTF-32BE BOM presence, bytes discarded
Ok
4.3/10UTF-32LE BOM presence, bytes discarded
Ok
4.3/10UTF-8 BOM presence, bytes discarded
Utfebcdic Ok
4.3/10UTF-EBCDIC signature, input discarded
Winegal L
4.3/10Wine gallons to liters, number discarded
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New servers, score changes, breakages
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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.