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.
MCP Server
4.9/10Query your users' Gmail, Slack, and Calendar with AI — Plaid for productivity apps
Mailbox
4.9/10Give AI agents secure access to your email via private aliases with dedicated mailbox storage.
Sparkforge
4.9/1020+ pay-per-use APIs: image gen, crypto data, email verify, SSL check, web scraping, and more.
MCP Server
4.7/10AI-powered scam and threat verification for phone numbers, URLs, texts, and emails.
Agentmail
4.7/10AgentMail is the email inbox API for AI agents. It gives agents their own email inboxes, like Gmail
Gmail MCP
4.7/10Manage Gmail messages, threads, labels, drafts, and settings from your workflows. Send and organiz…
Outlook Calendar
4.7/10A MCP server that works with Outlook Calendar to manage event listing, reading, and updates.
Idig Dns
4.7/10Professional DNS diagnostics: 14 tools for DNS, DNSSEC, email security, SSL, and propagation.
MCP Server
4.5/10Send transactional emails from AI agents via Truncus. Validate, track delivery, and manage domains.
Local MCP
4.5/10Native macOS MCP server — 82 tools for Mail, Calendar, Teams, OneDrive and more.
MCP Server
4.3/10Send emails, track events, and manage contacts with MailJunky.
Gmail
4.3/10Read emails, send messages, and manage labels in your Gmail account.
Misarmail
4.1/10Full email marketing platform: inbox, campaigns, contacts, templates, and analytics via MCP.
MCP Server
4.1/10Email for AI agents. Send and receive as markdown with human oversight.
Dilli Email Validation Api Server
3.9/10An MCP server that provides tools to validate an email address using Dilli Email Validation API.
Prospecting
3.9/10Autonomous B2B lead prospecting — 36 tools for campaigns, leads, and email outreach.
Nitrosend
3.9/10AI-native email marketing. Campaigns, automations, transactional, contacts, analytics via MCP.
Agents
3.7/10Persistent AI agents that run 24/7 in your Slack, Telegram, SMS, or email.
Myagentinbox
3.7/10Disposable email inboxes for AI agents. Auto-deletes after 24 hours.
Email Server
3.5/10An MCP server that provides email capabilities, hosted on Alpic platform
Node Email MCP 59Eeb419
3.5/10An MCP server that provides email capabilities, hosted on Alpic platform
Test Server
3.5/10An MCP server that provides email capabilities, hosted on Alpic platform
Send Email MCP
3.3/10Non functional server (yet)
Email MCP
3.1/10Description of my MCP server
Email MCP
3.1/10Description of my MCP server
Email MCP
3.1/10Description of my MCP server
Email MCP
3.1/10Description of my MCP server
Node Email MCP
3.1/10Description of my MCP server
Send Email
3.1/10Description of my MCP server
Email MCP
3.1/10Still WiP
Email MCP
3.1/10Still WiP!
Email MCP
3.1/10Still work in progress
Node Email MCP
3.1/10Still work in progress
Node Email MCP
3.1/10Non functional server (yet)
Node Email MCP
3.1/10Non functional server (yet)
Python Email MCP
3.1/10Still WiP
Send Email MCP
3.1/10Non functional server (yet)
Node Email MCP Ea33E576
3.1/10Description of my MCP server
Send Email MCP 01F22B8F
3.1/10Super description
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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.