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.
Backengine MCP
6.0/10Remote MCP server for BackEngine — query customer & prospect context (Slack, email, call transcripts, support tickets) from MCP client.
Nitrosend
4.9/10AI-native email marketing. Campaigns, automations, transactional, contacts, and analytics.
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.
Api
4.9/1055 tools, 7 Resources, Sigma rules, email SPF/DMARC, MITRE, CVE/KEV, risk_score. No key.
Crm
4.9/1034-tool CRM server — contacts, pipeline, quotes, invoices, scheduling, email, and AI scoring.
Contracts
4.9/10Read contracts, track renewals, surface vendor leverage, and draft cancellation/renewal emails.
Sendfast
4.9/10Agent-native marketing email: draft, edit, screenshot, and send from your verified domain.
Api
4.9/10135 MCP tools: geo, email, phone, company, DNS, FX, equities, weather, tax, econ, intel — one key.
MCP Server
4.9/10AI agents read & send email, manage mailboxes, domains and webhooks via the QMailing API.
Postagent
4.9/10Print & mail PDF/HTML/Markdown/text/DOCX/images to US addresses; pay per call in x402 USDC on Base.
Tinysend
4.9/10Email for agents: newsletters, subscribers, contacts, broadcasts. OAuth sign-in, no API key.
Verifly
4.9/10Email verification for AI agents — verify, clean & validate emails; self-onboard + crypto pay
MCP Server
4.9/10Governed email for AI agents: sandbox inboxes, server-side policy gate, tamper-evident audit.
Palmyr
4.9/10Agent infra: email, phone, social, domains, VPS, wallets. Paid per-action via x402, no API key.
MCP Server
4.9/10Empower AI agents with SendPulse email, CRM, chatbot, SMTP, and course automation
MCP Server
4.9/10AI-controlled email ops for campaigns, contacts, segments, analytics, and sending.
Send Decision
4.9/10Send-decision email verification: agents get send/review/avoid with evidence, pay-per-call via x402.
Mailkite
4.9/10Send email, manage domains, DNS, webhooks, templates, and inbound routing on MailKite
Agent Mail
4.9/10Give an AI agent its own inbox — receive email as a webhook, send over a verified domain.
Email Agent
4.9/10Email for AI agents — send, receive as a webhook, manage domains, templates, routing.
Inbound Email
4.9/10Turn inbound email into a webhook — verify, parse, route, and store incoming messages.
Mail Receive
4.9/10Receive inbound email as clean JSON — manage domains, routes, and webhooks. MailKite.
Mail Send
4.9/10Send transactional email over a verified domain — templates, attachments, custom headers.
Domani
4.9/10Domains + send/receive email + inbound webhooks + DNS for AI agents. One API, MCP, CLI.
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.
Dns
4.7/10DNS and email security scanner with 80 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.
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.
Stateful email for AI agents — read inboxes, reply in-thread, draft with approval.
MCP Esim
4.7/10Travel eSIMs for 193 countries. Stripe + Bitcoin checkout. QR by email in 30s. No API key.
Senderkit
4.5/10Build and send email, SMS, and push straight from your AI agent.
MCP Server
4.5/10Send transactional emails from AI agents via Truncus. Validate, track delivery, and manage domains.
MCP Server
4.5/10Tickstem developer tools — manage cron jobs and verify emails from your AI coding assistant.
Mailtrap
4.5/10Send emails and manage sending domains, suppression lists, and delivery analytics
Gmail
4.5/10MCP server for Gmail with OAuth2 (personal) and service account (Workspace) support.
SpiderIQ Mail: SpiderMail mailboxes, messages, threads, send, compose for AI agents
MCP Domain Deliverability Checker
4.5/10Audit a domain email deliverability via Apify: SPF, DKIM, DMARC, MX, blacklist, catch-all, age.
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.
MCP Server
4.3/10Official MCP Server for Mailtrap
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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.