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.
Leap Utc
4.3/10Whether the current UTC year is a leap year
Linear Id Ok
4.3/10LIN-123 identifier shape, value discarded
Link Rel Count
4.3/10HTML link rel count, markup discarded
Litre Gal
4.3/10Liters to US gallons, number discarded
Lockfile Kind
4.3/10Lockfile family hint, body discarded
Luhn Ok
4.3/10Luhn checksum, number discarded
Lux Ok
4.3/10Lux band check, number discarded
Mailto Ok
4.3/10mailto: shape, address discarded
Makefile Ok
4.3/10Makefile target count, body discarded
Markdown Ok
4.3/10Markdown heading count, body discarded
Market Open Utc
4.3/10Whether current UTC hour is weekday NYSE window
Maven Pom Ok
4.3/10Maven POM coordinate shape, body discarded
Md Heading Count
4.3/10Markdown heading count, text discarded
Meta Count
4.3/10HTML meta tag count, markup discarded
Method Token Ok
4.3/10Whether a token is an HTTP method
Metre Ft
4.3/10Meters to feet, number discarded
Mime Markdown
4.3/10Public MIME token for markdown.
Minmax Ok
4.3/10Whether a is inside [min,max], numbers discarded
Mkv Ebml
4.3/10Matroska EBML check, file discarded
Month Start
4.3/10UTC start of the current month
Moon Phase Utc
4.3/10Coarse moon phase from UTC day
Magic
4.3/10MP3 frame sync check, file discarded
Sync
4.3/10MP3 frame sync check, file discarded
Msgpack Ok
4.3/10MessagePack marker count, body discarded
Murmur Len
4.3/10Murmur hash hex length, input discarded
Murmur Ok
4.3/10MurmurHash hex, input discarded
Ndjson Lines
4.3/10NDJSON line count, bodies discarded
Newline Kind
4.3/10LF vs CRLF vs CR, text discarded
Nl Postcode
4.3/10Dutch postcode shape, value discarded
Oci Ref Ok
4.3/10OCI image reference shape, name discarded
Og Meta N
4.3/10Open Graph meta count, markup discarded
Og Tag Count
4.3/10Open Graph tag count, markup discarded
Ogg Magic
4.3/10Ogg magic-byte check, file discarded
Openapi Ok
4.3/10OpenAPI version key shape, body discarded
Orc Magic
4.3/10ORC magic-byte check, file discarded
Origin Host
4.3/10Origin scheme+host shape, URL discarded
Origin Ok
4.3/10Origin header shape, value discarded
Package Json Ok
4.3/10package.json key count, values discarded
Para Count
4.3/10Paragraph count, text discarded
Parquet Magic
4.3/10Parquet magic-byte check, file discarded
Parquet Ok
4.3/10Parquet magic-byte check, file discarded
Pascal Ok
4.3/10Pascal pressure band, number discarded
Pascalcase Ok
4.3/10PascalCase charset, value discarded
Path Posix Ok
4.3/10POSIX path shape, path discarded
Pdf Magic
4.3/10PDF magic-byte check, file discarded
Pem Fence
4.3/10PEM fence check, key discarded
Pem Ok
4.3/10PEM fence check, key 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.