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.
Gdc
4.5/10NCI Genomic Data Commons (GDC) MCP.
Interpro
4.5/10InterPro MCP (EBI) — protein family / domain / functional-site classification.
Itis
4.5/10ITIS (Integrated Taxonomic Information System) MCP.
Jisho
4.5/10Jisho.org Japanese-English dictionary MCP (keyless).
Kegg
4.5/10KEGG REST MCP — Kyoto Encyclopedia of Genes and Genomes.
Macvendors
4.5/10macvendors.com MCP — MAC address (OUI) → hardware manufacturer lookup.
Obis
4.5/10OBIS (Ocean Biodiversity Information System) MCP.
Oeis
4.5/10OEIS (On-Line Encyclopedia of Integer Sequences) MCP.
Openiban
4.5/10OpenIBAN MCP — validate an IBAN's checksum + bank code and resolve the
Osf
4.5/10OSF (Open Science Framework, by the Center for Open Science) MCP.
Remoteok
4.5/10RemoteOK MCP — remote-work job board (tech-heavy), keyless.
Speedrun
4.5/10Speedrun.com MCP — wraps the Speedrun.com API v1 (speedrun.com/api/v1)
Worms
4.5/10WoRMS (World Register of Marine Species) MCP — keyless.
Currents
4.5/10Currents MCP — wraps the Currents API (currentsapi.services)
Edamam
4.5/10Edamam MCP — wraps three Edamam APIs in one pack:
Emdb
4.5/10EMDB (EBI Electron Microscopy Data Bank) MCP — keyless.
Guidetopharmacology
4.5/10IUPHAR/BPS Guide to PHARMACOLOGY (GtoPdb) MCP — keyless.
Jpl Ssd
4.5/10NASA/JPL Solar System Dynamics + CNEOS MCP.
Metabolights
4.5/10MetaboLights MCP — EBI's metabolomics study repository.
Opendota
4.5/10OpenDota MCP — Dota 2 open stats.
Pdbe
4.5/10PDBe (Protein Data Bank in Europe, EBI) MCP.
Powo
4.5/10POWO (Plants of the World Online, by the Royal Botanic Gardens, Kew) MCP.
Predicthq
4.5/10PredictHQ MCP — wraps the PredictHQ Events API (predicthq.com)
Pride
4.5/10EBI PRIDE Archive MCP — proteomics (mass-spectrometry) data repository.
Protein Atlas
4.5/10Human Protein Atlas (HPA) MCP — keyless.
Quickgo
4.5/10QuickGO (EBI) MCP — Gene Ontology browser.
Taginfo
4.5/10OSM Taginfo MCP — statistics on OpenStreetMap tags (keys and key=value pairs).
Thegamesdb
4.5/10TheGamesDB MCP — wraps TheGamesDB API (thegamesdb.net), a community
Tomorrow Io
4.5/10Tomorrow.io MCP — wraps the Tomorrow.io Weather API (api.tomorrow.io/v4)
Va Museum
4.5/10Victoria and Albert Museum (V&A) Collections MCP.
Valorant
4.5/10VALORANT reference data MCP (valorant-api.com).
Shotapi MCP Server
4.5/10Screenshot and HTML render MCP server for AI agents
Context Awesome
4.5/10MCP server for accessing curated awesome list documentation
Artsmia
4.5/10Minneapolis Institute of Art (Mia) collection MCP.
Cftc Cot
4.5/10CFTC Commitment of Traders (COT) MCP.
Crypto Fng
4.5/10Crypto Fear & Greed Index MCP.
Digimon
4.5/10Digimon API MCP (digi-api.com).
Hathitrust
4.5/10HathiTrust Bibliographic API MCP.
Hgnc
4.5/10HGNC (HUGO Gene Nomenclature Committee) MCP.
Idigbio
4.5/10iDigBio biodiversity specimen MCP.
Mesh
4.5/10NLM MeSH (Medical Subject Headings) MCP.
Metmuseum
4.5/10The Metropolitan Museum of Art Collection MCP.
Mfapi India
4.5/10MFAPI.in MCP — Indian mutual-fund NAV (net asset value) data.
Nager Holidays
4.5/10Nager.Date Public Holidays MCP.
Nasa Cmr
4.5/10NASA CMR (Common Metadata Repository) MCP.
Osv
4.5/10OSV.dev (Open Source Vulnerabilities) MCP.
Sefaria
4.5/10Sefaria MCP — the free digital library of Jewish texts.
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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.