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.
Spdx License
4.1/10SPDX License List MCP
Usda Fdc
4.1/10USDA Food Data Central MCP
Venuvidya
4.1/10Kannada/English Carnatic flute KSGMS syllabus — search lessons, log practice, ask a RAG guru.
Dataforb2B
4.1/10Search and enrich B2B people & companies — 70+ filters (funding, linkedin, industry, country, ...).
Sefaria
4.1/10Access Sefaria's library of Jewish texts, commentaries, and learning schedules via MCP
Real Estate
4.1/10Live Estonia real estate listings with search, geo filters, and property metadata.
Mirror
4.1/10Give Claude an honest self-model — behavioral tendencies built from evidence, not session memory. Mi
Ietf Datatracker
4.1/10IETF Datatracker MCP.
Orcid
4.1/10ORCID MCP — public records.
Real Estate
4.1/10Live Latvia real estate listings with search, geo filters, and property metadata.
MCP Server
4.1/10ROC biometrics & computer vision: face, LPR, OCR, pedestrian, vehicle, gun detection.
Boundary Guard X402
4.1/10MCP tools for x402 readiness, paid-path probes, launch packs, and trust receipts.
Scrutica
4.1/10AI compute infrastructure intelligence: facilities, supply chains, sovereign AI, export controls.
Anapioficeandfire
4.1/10An API of Ice and Fire MCP.
Ensembl
4.1/10Ensembl REST MCP.
Mygene Info
4.1/10MyGene.info MCP.
Noaa Tides
4.1/10NOAA Tides & Currents MCP.
Studio Ghibli
4.1/10Studio Ghibli MCP — fan API.
Cajusticewatch
4.1/10California criminal-justice accountability: DAs, defenders, judges, officers, CJP, POST.
Dime Experiment Tools
4.1/10Free MCP server: Nostr profile fetcher + a tip-metadata tool. AI-earns-a-dime experiment.
Medibill Saver
4.1/10Medicare rates, hospital quality, and dispute scenarios from six federal public-domain datasets.
Codex Pets Ydb Qdrant
4.1/10Search, preview, install community Codex pet packs, and discover the pet request flow.
Dbqueryguard MCP
4.1/10Paid remote MCP for governed database query review, SQL simulation, approvals, and audits.
Mcpriskledger MCP
4.1/10Paid remote MCP for server intake risk reports, tool review, approvals, and readiness.
Toolbudgetrouter MCP
4.1/10Paid remote MCP for context-budget routing, schema cost estimates, usage audits, and readiness.
Research
4.1/10Equity research API for US-listed companies. Free primer, $1 fundamentals, $2 investment memo.
Transcriptmax
4.1/10Transcribe YouTube via Whisper. Summaries, chapters, semantic-search across your corpus.
Listings
4.1/10Free public real estate listing exchange. Search, retrieve, and submit inquiries on listings.
MCP Server
4.1/10Cross-product MCP server for CRM, LeadKit, ProjectKit, Bookio. 10 action types, MIT open spec.
Agentmemory MCP
4.1/10Paid remote MCP for persistent AI agent memory, analytics, checkout, and search-readiness.
Mcploadbudgeter MCP
4.1/10Paid remote MCP for context budgets, progressive loading, schema slimming, and readiness.
Promptguardscan MCP
4.1/10Paid remote MCP for LLM security scans, jailbreak checks, analytics, checkout, and readiness.
Servercardtrust MCP
4.1/10Paid remote MCP for server-card validation, auth checks, trust packets, and readiness.
Syntheticuserlab MCP
4.1/10Paid remote MCP for synthetic user testing, UX validation, analytics, checkout, and readiness.
Public
4.1/10Cursos, turmas, vagas, professores, podcasts e blog da Escola de Rádio (ER+) — read-only.
Bioregistry
4.1/10Bioregistry MCP.
Cisa Kev
4.1/10CISA KEV MCP.
Data Ny
4.1/10data.ny.gov Socrata MCP.
Dataverse Harvard
4.1/10Harvard Dataverse MCP.
Exoplanet Archive
4.1/10NASA Exoplanet Archive MCP.
Gov Uk Content
4.1/10GOV.UK Content + Search APIs.
Gtex
4.1/10GTEx MCP.
Horizons Nasa
4.1/10JPL Horizons MCP.
Librivox
4.1/10LibriVox MCP.
Mitre Cwe
4.1/10MITRE CWE API MCP.
Noaa Spc
4.1/10NOAA SPC MCP.
Openfoodfacts
4.1/10Open Food Facts MCP.
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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.