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.
Checkmails
4.1/10Verify email deliverability by SMTP. Catch-all/disposable/role detection. EU-hosted, GDPR-ready.
MCP Server
4.1/10Hosted email for AI agents: create inboxes, send, receive, and reply over MCP with scoped API keys
Abundance Apis
4.1/10Try 26 utility REST APIs keylessly: NAICS classification, IP geo, email validation, currency.
MCP Server
4.1/10Remote MCP server: 19 domain-hygiene and email-auth tools (DNS, SPF, DMARC, DKIM, TLS).
Snov MCP Server
4.1/10Snov.io: lead discovery, email verification, enrichment, CRM, and LinkedIn automation actions.
Diagnostics
4.1/10Check email deliverability for a domain: MX, SPF, DKIM, DMARC, blacklists. Graded, no key.
Mailfixture
4.1/10Test-inbox API for email and SMS: create inboxes, long-poll messages, extract OTPs and links.
MCP Server
4.1/10Email validation for Claude and any MCP client — verdicts with evidence and bulk jobs.
Read, send, organize, watch email on any IMAP mailbox: Gmail, iCloud, OVH, Zoho, Fastmail + CalDAV.
Pii Redact
4.1/10Detects and redacts PII (emails, phones, SSNs, names, addresses) from text. $0.02/call via x402.
Leads MCP
4.1/10Finds, filters, and verifies local-business leads; every email carries a verification receipt.
Fine Structure
4.1/10Build and host full-stack apps from a prompt, with agents that reach you on WhatsApp and email.
Frazzlecrm
4.1/10CRM + visual automation builder AI agents can drive via MCP: contacts, tags, maps, email/SMS flows.
Agentda
4.1/10Agent-native task management: your AI agent is the interface. Delegate to anyone by email.
Mailstream
4.1/10The first MCP server for physical mail: send postcards and letters, manage lists and campaigns.
MCP Server
4.1/10Create and manage Templated email templates from any MCP client - bring your own model.
Agent Tools
4.1/10Open, read-only wig stock, restock ETAs and cross-brand color matching. No key; fair-use limits.
Zerm
4.1/10Agent utility belt: memory, locks, webhook inboxes, timers, DNS, email, URL, timezone, cron
Waitlist
4.1/10Create and manage waitlists from your AI agent: page, custom domain, emails, signups, broadcasts.
Inbox Preview
4.1/10Render HTML/.eml emails in real Gmail, Outlook & Yahoo web clients and screenshot them
Cronping
4.1/10Dead-man's-switch heartbeat monitor for agents, cron jobs & workers. Late ping = you get emailed.
MCP Server
4.1/10Operate your EVERJUST workspace: CRM, sales, projects, mail, documents, calendar, invoicing.
Campaignstack
4.1/10Run B2B outreach from your AI agent: 250+ tools for campaigns, leads, LinkedIn and email workflows.
MCP Server
4.1/10Free anonymous website, DNS, email and TLS checks, plus monitor read and opt-in write access.
Coinslot
4.1/1013 micro-tools for agents: read pages, verify email, convert, validate, diff, extract. AI-operated.
Blueticked
4.1/10Send WhatsApp, SMS and email for South African businesses: contacts, campaigns, templates, webhooks
Screening
4.1/10OFAC and global sanctions screening: crypto addresses, emails, websites, IDs, countries, VPN, geo
Fat Heron
4.1/10MCP control plane for AI developers managing customer mail, DNS, projects, keys, and diagnostics.
Handwritten Cards
4.1/10Send real handwritten cards in the US. A machine writes each one in ink, then we mail it.
MCP Server
4.1/10Generate changelogs, release emails, help-center articles, banners, and social posts from commits.
Busymail
4.1/10Read, organise and send from your existing email accounts. Nothing sends without your approval.
MCP Server
4.1/10Give your AI agent an identity: its own email, webhook, repo, secrets vault, memory and skills.
Google Workspace
4.1/10Permissioned access to Gmail, Drive and Calendar via the user's own Google account
Microsoft 365
4.1/10Permissioned access to Outlook, OneDrive and Teams via the user's own Microsoft account
Email Verification
4.1/10Verify email addresses in real time and find business email addresses with live mailbox checks.
Sausage Trust
4.1/10Email, phone, domain, URL & OFAC verification; phishing and IBAN checks via x402.
Email Verification
4.1/10Verify email addresses and clean lists to improve deliverability and sender reputation.
Agent Email
4.1/10namailu.cz gives your AI agent its own email inbox: read and send mail over MCP, with OAuth.
Pcblt
4.1/10Live DNS, email-auth and redirect checks, HTTP security headers, uptime history, PC hardware prices.
Eusend
4.1/10Send transactional email and manage domains, audiences, and broadcasts from any MCP client.
MCP Server
4.1/10Brand-aware creative studio for Claude: 200+ tools for on-brand ads, video, email and campaigns.
Verify The Email Instantly
4.1/10Verify the email instantly: Identify the spam email while authenticating your users.
Crevio
4.1/10An AI agent that runs your online business: products, orders, customers, email, and sites.
Tools
4.1/1049 free agent tools: WHOIS, PDF to text, email checks, FX rates, X12 EDI, JSON repair. No API key.
Alfred
4.1/10Your real Gmail, Outlook and calendars, worked as you: read, draft, send, schedule, organize.
Hedwig
4.1/10Read, arrange, and build agents on your Hedwig email board from any AI client. Nothing ever sends.
Bavlio
4.1/10LinkedIn + cold email outreach: find leads, launch personalized campaigns, manage replies.
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.