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.
Avalanche Docs
4.5/10Search and retrieve Avalanche blockchain documentation for building on AVAX.
The Data Collector
4.5/10Search Hacker News, Bluesky, and Substack from a single MCP interface
Crossref MCP Server
4.5/10Search 150M+ academic works, journals, and funders via Crossref API.
Openfda MCP Server
4.5/10Search FDA safety data: drug adverse events, recalls, and device events.
Pubmed MCP Server
4.5/10Search 36M+ PubMed biomedical articles and ClinicalTrials.gov studies.
Sec Edgar MCP Server
4.5/10Search SEC EDGAR filings, financial statements, and company data.
Graphos MCP Tools
4.5/10Search Apollo docs, specs, and best practices
Forage Shopping
4.5/10AI shopping comparison — search 50M+ products, compare prices, find deals
Goldhold
4.5/10Persistent memory for AI agents. Search, store, and recall across sessions.
Mistaike MCP
4.5/10295k+ bug-fix patterns with MCP Hub proxy, PII filtering, and code search
Ragora MCP
4.5/10Search your knowledge bases from any AI assistant using hybrid RAG.
Domains
4.5/10Domains MCP — domain registration lookup + availability search over live
Hackernews
4.5/10Hacker News MCP — search and retrieve stories from Hacker News
Serpapi MCP
4.5/10Official SerpApi MCP server for Google, Bing, and other search engines.
MCP Automem
4.5/10Graph-vector memory for AI assistants using FalkorDB and Qdrant
MCP Server
4.5/10Give AI assistants access to real-time search data through SearchApi.
MCP Server
4.5/10Search the Plainsight playbook and review code against proven best practices.
Uk Case Law
4.5/10Search UK court judgments and tribunal decisions from the National Archives
Uk Constituencies
4.5/10Search UK parliamentary constituencies by name, get boundaries and ONS codes
Uk Hansard
4.5/10Search Parliamentary questions and motions from UK House of Commons
Uk Legislation
4.5/10Search UK Acts, Statutory Instruments, and legislation with full text retrieval
Uk Planning
4.5/10Search UK planning applications, entities, datasets, and conservation areas
Research Report
4.5/10Multi-source research report generator with web fetching. x402 micropayment.
Vector Search
4.5/10In-memory vector search with TF-IDF and cosine similarity. x402 micropayment.
Altos
4.5/10Altos Research MCP — Real estate market intelligence
Trademarks
4.5/10Trademarks MCP — US trademark search + record lookup
Prxhub
4.5/10Search, cite, download, and publish .prx research bundles on prxhub.com.
Corvi Careers
4.5/10Search remote and onsite jobs through the public Corvi Careers MCP server.
MCP Grantiq
4.5/10Search US grants + federal contracts (Grants.gov + SAM.gov) from any LLM.
Arxiv
4.5/10arXiv MCP — preprint server search (free, no auth)
Brave Search
4.5/10Brave Search MCP — independent web index (no Google/Bing dependency)
Nih Reporter
4.5/10NIH RePORTER MCP — every NIH-funded research project (free, no auth)
Datacite
4.5/10DataCite MCP — DOIs for research datasets (free, no auth)
Openaire
4.5/10OpenAIRE MCP — EU research outputs (publications, datasets, software, projects)
Pvgis
4.5/10PVGIS MCP — EU Joint Research Centre PV system modeler
Openverse
4.5/10Openverse MCP — Creative-Commons-licensed image + audio search.
Hal Fr
4.5/10HAL (Hyper Articles en Ligne) MCP — French national open research archive.
Ror
4.5/10ROR MCP — Research Organization Registry.
Ncbi Eutils
4.5/10NCBI E-utilities MCP — federated Entrez search/fetch.
Plos
4.5/10PLOS Search MCP — Solr-backed search over all PLOS journals.
Clinicaltables
4.5/10NIH Clinical Tables Search Service MCP.
Agent Tools MCP
4.5/10Discover and call x402 paid services — search by intent, filter by price/chain.
Atex Ai Gateway
4.5/10One API key for 6 AI models. Pay-per-use. MCP protocol support with web search.
Google Search Console
4.5/10Google Search Console MCP Pack
Asub Ax
4.5/10Statistics and Research Åland (ÅSUB) PxWeb MCP.
MCP Server
4.5/10Domain search, registration, DNS, marketplace, and checkout with your AI agent.
Tradeos MCP
4.5/10TradeOS MCP: ticker search, My Agent, chart TA, macro news. npm stdio or HTTP.
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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.