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.
Openreview
4.5/10OpenReview MCP — ML conference submissions and reviews (API v2)
Openverse
4.5/10Openverse Creative-Commons image + audio search
Remotive
4.5/10Remotive MCP — curated remote-only job board
Schemastore
4.5/10JSON Schema catalog (SchemaStore.org)
Spdx License
4.5/10SPDX open-source license list with full text
Transit Land
4.5/10Transitland MCP — global GTFS aggregator
Uk Parliament
4.5/10UK Parliament MCP — Members, Bills, Hansard APIs
Usajobs
4.5/10USAJOBS.gov MCP — US federal job postings
MCP Server
4.5/10KYB for AI agents: verify business registrations from MCP clients.
Seo MCP
4.5/10Six tools for SEO and AI-readability audits. 91 checks, 11 score modules.
Lockin MCP
4.5/10iOS dopamine detox app with social media blocking and screen time tools.
Memheaven
4.5/10Self-hosted remote MCP memory server for ChatGPT and AI agents.
Blockchair
4.5/10Blockchair multi-chain block explorer (BTC, ETH, LTC, DOGE, XMR, +12 more)
Datagouv Fr
4.5/10France data.gouv.fr open-data catalogue
Datagov Au
4.5/10Australia data.gov.au open-data catalogue (CKAN)
Ebi Ols
4.5/10EBI Ontology Lookup Service — 250+ biomedical ontologies
Hal Fr
4.5/10HAL — French national open research archive
Ietf Datatracker
4.5/10IETF Datatracker RFCs / drafts / working groups / people
Inspire Hep
4.5/10INSPIRE-HEP high-energy physics literature database
Kitsu
4.5/10Kitsu anime + manga catalogue (JSON:API)
Opentargets
4.5/10Open Targets disease/target/drug knowledge graph (GraphQL)
Orcid
4.5/10ORCID public researcher records (works, employment, education)
Reactome
4.5/10Reactome biological pathway database
Repology
4.5/10Repology cross-distro package version aggregator
Ror
4.5/10Research Organization Registry (ROR) — canonical org IDs
Squiggle
4.5/10AFL (Australian Football League) fixture, ladder, and crowd-sourced tips
Tatoeba
4.5/10Tatoeba multilingual sentence corpus (~13M sentences, 400+ languages)
Anapioficeandfire
4.5/10An API of Ice and Fire — A Song of Ice and Fire (books/characters/houses)
Data Europa
4.5/10data.europa.eu — official EU open-data hub (~1.6M datasets)
Deps Dev
4.5/10deps.dev — Google's package metadata + dependency graph API
Ensembl
4.5/10Ensembl REST — vertebrate genomes, sequences, comparative genomics, variation
Fmi
4.5/10Finnish Meteorological Institute open data (forecast, observations, warnings)
Gdacs
4.5/10GDACS — Global Disaster Alert & Coordination System (EQ/TC/FL/VO/DR/WF)
Gnomad
4.5/10Broad Institute gnomAD genomic variant database (GraphQL)
Monarch Initiative
4.5/10Monarch biomedical knowledge graph — diseases, phenotypes, genes, variants
Mygene Info
4.5/10MyGene.info — gene annotation joining NCBI/Ensembl/UniProt/KEGG/OMIM
Ncbi Eutils
4.5/10NCBI E-utilities — federated Entrez search/fetch (PubMed/Gene/Nucleotide/…)
Noaa Swpc
4.5/10NOAA Space Weather Prediction Center (solar wind, Kp, aurora, alerts)
Noaa Tides
4.5/10NOAA Tides & Currents — observations, predictions, datums, station metadata
Opencitations
4.5/10OpenCitations COCI — open-license citation index by DOI
Osv Dev
4.5/10OSV.dev — Google's open-source vulnerability database
Plos
4.5/10PLOS journals — Solr-backed full-text search across all PLOS OA content
String Db
4.5/10STRING protein-protein interaction networks across ~12k organisms
Studio Ghibli
4.5/10Studio Ghibli fan API (films, people, locations, species, vehicles)
Agent Revenue Copilot
4.5/10MCP/x402 starter audit; payment-ready buyers call buy_now first.
Hyperstore MCP
4.5/10Search and inspect 6,500+ curated AI apps from the HyperStore directory.
Nexus Legal
4.5/10International legal analysis (ISO 31000) across 63 jurisdictions — 15 tools.
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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.