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.
Fnlowl
4.9/10Read and manage fnlowl widgets, leads, email sequences and analytics from an AI assistant.
One inbox for all your addresses: your AI agent reads, sorts, drafts and sends with your permission.
Xposedornot
4.9/10Real-time data-breach lookup and analytics for emails and domains from XposedOrNot.
Mailprobe
4.9/10Verify email addresses in real time: deliverability, disposable and role addresses, typo fixes.
Winnr
4.9/10Cold email infrastructure: buy domains, create SMTP mailboxes, set DNS, run warming, read mail.
Openmail
4.9/10Gmail for agents: create inboxes, read and reply to mail, send email, manage domains. OAuth sign-in.
MCP Server
4.9/10Email marketing: campaigns, audiences, contacts, segments, templates and reports.
Printandmailcompany
4.9/10Print and mail real letters worldwide from the EU, incl. registered mail. Quote, compose, send.
Email Verification
4.9/10Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.
Email Verification
4.9/10Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.
Ludus
4.9/10Board, ladder and journal for AI trading agents. Free desk key; a verified email comps a Seat.
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.
MCP Server
4.7/10Give your agent its own email address with graduated human oversight, from approval to autonomy.
Idig Dns
4.7/10Professional DNS diagnostics: 14 tools for DNS, DNSSEC, email security, SSL, and propagation.
Emailmcp
4.7/10AI agent email — 23 tools free to read inbox, 28 paid to send. $9.99/mo. Token auto-provisioned.
Pingfyr
4.7/10Schedule reminders for AI agents via email, webhook, Slack, Discord, Telegram, or Google Calendar.
M365 Graph
4.7/10Manage Microsoft 365 email, calendar, contacts and inbox rules via the Graph API with OAuth 2.0.
Mailverdict
4.7/10Keyless email checks: disposable, role, and free-provider detection, MX, and typo suggestions.
Commerce Validators
4.7/10Commerce validators: live EU VAT (VIES), EORI, email/MX lookups; IBAN/ABA/GTIN checksums; VAT rates.
Emailmd
4.7/10Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.
Domain Intel MCP
4.7/10Domain & company intel for AI agents: RDAP, DNS, email deliverability, tech stack. No API keys.
Lead Generation MCP
4.7/10B2B and local lead gen: verified emails, site contacts, Maps and Yellow Pages leads.
MCP Server
4.7/10Send transactional email, verify domains, build contact segments, and draft marketing campaigns.
Domain Dns Whois
4.7/10Domain intel for AI agents: RDAP registration, DNS, email deliverability, tech stack.
Nitrosend
4.7/10AI-native email marketing. Campaigns, automations, transactional, contacts, and analytics.
MCP Esim
4.7/10Travel eSIMs for 193 countries. Stripe + Bitcoin checkout. QR by email in 30s. No API key.
Demipass
4.7/10Credential custody for agents: use secrets blind (ssh/http/smtp/git/db), never in context.
Proxyllm MCP
4.7/10OpenAI-compatible LLM gateway: models, savings math, key provisioning, autonomous email-OTP signup
MCP Server
4.7/10Scrape Google Maps business data from any MCP client — names, phones, emails, websites, ratings.
Zerodrop MCP
4.7/10Disposable email inboxes for AI agents — OTPs and magic links auto-extracted. No signup needed.
Sendable
4.7/10Send transactional email from your editor — describe the event, Sendable writes and sends it.
Proton Bridge MCP
4.7/10Read, organise and carefully-gated send for Proton Mail, without your mail leaving this machine.
Email Validation
4.7/10Verify email addresses, clean lists, and audit a domain SPF, DKIM, DMARC and MX setup.
Inbox
4.7/10A real email inbox for AI agents: human-approved sends, untrusted-by-default inbound.
MCP Server
4.7/10Reputation of IPs, domains, URLs, hashes, emails and phones; CVE lookups; prompt-injection scans
Nintact
4.7/10Contact forms that actually arrive. No SPF/DKIM, no SMTP. AI sorts them and drafts the reply.
Swissco
4.7/10Swiss company data: Zefix register, SHAB gazette, simap tenders, FINMA, GLEIF and ARAMIS
Send email through your own Amazon SES account, and check domains, suppressions and sandbox status.
Mxprobe
4.7/10Email verification for AI agents: send, hold or kill with the reason. Signup and credits by API.
MCP Server
4.7/1050 developer utility APIs as tools: SSL, DNS, WHOIS, email checks, HTML to PDF, sitemaps and more.
MCP Server
4.7/10Privacy-focused email: domains, DNS verification, aliases, SMTP sending, mailboxes and calendars.
Senderkit
4.5/10Build and send email, SMS, and push straight from your AI agent.
Platform
4.5/10335 MCP tools, 75 playbooks. AI-native CRM, email/SMS, events, OAuth.
Loops
4.5/10Manage Loops contacts, mailing lists, and transactional/event emails.
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.