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.
Python Code Validator
4.7/10Validates AI-generated Python: syntax, lint, security scan and deterministic repair.
Phone Lookup
4.7/10Who-called phone lookups: community verdict, spam rating, operator and reviews (ktozvonil.net).
Breaking Changes
4.7/10What breaks when you upgrade a package, and what to use instead - from official docs.
Fragrances
4.7/10Fragrance encyclopedia: note pyramids, accords, perfumers and dupes (parfica.com).
Plate Lookup
4.7/10Ukrainian license-plate and vehicle lookups: registry data, photos and reviews (trustcar.info).
Domain Trust
4.7/10Website trust checks: 0-100 safety score, verdict and community reviews (truster.info).
MCP Server
4.7/10Build Apps and run code in 30 languages — sandboxed, with persistent sessions for agent loops.
Eurorwa Analyst
4.7/10EuroRWA analyst: tokenized money-market fund signals, snapshots, analytics and alerts.
Statement Normalizer MCP
4.7/10Deterministic bank-statement parsing: messy CSV/OFX to clean categorized rows. In-memory only.
Verified Numbers MCP
4.7/10Current source-cited 2026 US tax constants and calculators for AI agents; every answer cites IRS.
Verified Wages MCP
4.7/10Current source-cited US minimum wage, tipped wage, and FLSA constants for AI agents; cites DOL.
Air Quality MCP
4.7/10Free, keyless real-time air quality (US AQI plus PM2.5, PM10, ozone, NO2, SO2, CO) for any city.
Crypto Price MCP
4.7/10Free, keyless live cryptocurrency prices, market cap, and 24h change via CoinGecko.
Domain Rdap MCP
4.7/10Free, keyless domain registration lookup via RDAP: registered, available, registrar, expiration.
Holidays MCP
4.7/10Free, keyless public holidays lookup for any country and year, plus single-date holiday checks.
Postal Lookup MCP
4.7/10Free, keyless postal/ZIP code lookup: place name(s), state/region, and coordinates.
Uis MCP Server
4.7/10UNESCO UIS statistics (education, science, culture) with full provenance and fixed releases.
Context Relay
4.7/10Compact, citation-verifiable public web context for AI agents, paid per use with x402.
Hevy Coach MCP
4.7/10Training analytics over your Hevy log: e1RM, PRs, volume, consistency, bodyweight.
Usefillo
4.7/10Fillo MCP server — provision, scaffold, publish, and query forms from your coding agent.
Cortexcloud
4.7/10Pay-per-call QUBO/Ising optimization for AI agents via x402 (USDC on Base). No API keys.
Dant3
4.7/10Read-only Dant3 MCP for public rooms, agents, jobs and provisional machine onboarding.
Aictrl
4.7/10Governance layer for AI coding agents: knowledge-graph grounding, session audit, policy controls.
Trust Layer
4.7/10Trust preflight and intent-to-effect integrity for consequential AI-agent actions.
Hogswap MCP
4.7/10Pay any Algorand x402 invoice with any asset, plus DEX swap quotes and unsigned builds.
Meeba Brain
4.7/10Ground-truth code graph for your codebase: exact callers, callees, symbols & dependencies.
Zerostart Agent
4.7/10Bounded data, document, web-quality, and operations services purchased with USDC through x402.
Python Code Validator
4.7/10Proves AI-generated Python does what you asked: lint, types, security, sandbox run, exact fixes.
Theaijournal
4.7/10Submit an article to The AI Journal, a daily journal written entirely by AI systems.
Latam Fintech Synthetic Data
4.7/10Privacy-safe synthetic financial data for LatAm fintech, AI agents, testing and ML.
Cleaning Tools
4.7/10Free US cleaning cost, time, crew, and chemical-use calculators with visual reports.
Newsline
4.7/10News from 17 outlets with left/center/right bias tags and one-sided blindspot detection
Academyinfo
4.7/10Compare 488 Korean universities on 17 official disclosure indicators (대학알리미). No API key.
Once
4.7/10Prevent duplicate AI-agent side effects with idempotency, verification, and durable receipts.
Fx Converter MCP
4.7/10Free, keyless real-time currency conversion and exchange rates for any currency pair.
Closelook Intelligence
4.7/10Closelook AI-market intelligence: 5 indices, 6 ranking families, stock snapshots. 13 tools.
Cogdepot
4.7/10Anonymous broker: AI agents publish capabilities, negotiate, and form direct peer-to-peer deals.
Validar Semver
4.7/10Resolves real semver range satisfaction (^1.2.3, ~2.0) against a version. Paid via x402/USDC.
Decisionmatrix MCP
4.7/10Deterministic multi-criteria decision analysis for AI agents — score, rank & explain options.
Precisioncalc MCP
4.7/10High-precision finance & business calculations for AI agents — exact decimals, never floats.
Dpyc Oracle
4.7/10DPYC Social Contract community concierge — free MCP for membership, governance, and onboarding
Relay Agents
4.7/107 anonymous read-only tools. Authority-bounded autonomous onboarding guide. No financial authority.
Trust Layer
4.7/10Payment-rail-independent intent-to-effect integrity for consequential agent actions.
Digche Icons
4.7/10Find semantic Digche replacements for functional UI icons and retrieve the selected SVG style.
Rapidapi Metadata Extractor
4.7/10Turns any URL into SEO metadata, contacts, tech stack, and AI-ready Markdown, in one call.
Banproof MCP
4.7/10Audit creator scripts for TikTok Shop and Amazon policy violations. Returns flags and safe rewrites.
Dados B3
4.7/10Brazilian stock (B3) fundamentals: ratios, multiples, dividends, scores. Public methodology.
Free · No spam
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.