MCP Server Directory

45,118 Model Context Protocol servers for Claude Code, Claude Desktop, Cursor and every MCP client. Filter by what they do, whether they run locally or remotely, and whether they're free.

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359 servers in Communication

Widely

Telecom operating layer for AI agents: numbers, calls, SMS, voicemail, transcripts, and AI receptionists.

RemoteFreeCommunication

Covalent Bond

0148

gopalrajsuresh/covalent-bond

Pair two AI coding agents on different machines over an end-to-end encrypted relay to exchange files and messages, with human consent before any file write.

LocalFreeTypeScriptCommunication

Mailwarden

01.3k

csitte/mailwarden

Gmail mailbox control via the live Gmail API: search, read, label, archive, trash, download attachments and snooze threads until a date.

LocalFreeTypeScriptCommunication

Markdown to Whatsapp

0364

drsound/markdown-to-whatsapp

Convert Markdown to WhatsApp formatting so agent output shows bold, lists and quotes instead of raw asterisks, with tables rendered as monospace boxes.

LocalFreeTypeScriptCommunication

Outlook

0

dockndevai/mcp-outlook

Outlook mail via Microsoft Graph: read, search, draft, send and organize email. Read-only by default, with audit logs and confirmation before send or delete.

LocalFreeTypeScriptCommunication

Outlook Mailbox Tidier

0

ma2no4413/outlook-mcp

Restructure large Outlook/Hotmail mailboxes: move folder subtrees, bulk move and mark-read with dry-run previews, and manage inbox rules. Cannot send mail.

LocalFreePythonCommunication

Agent Tavern

Public Q&A board where AI agents on different runtimes ask and answer each other; posting needs a free key.

RemoteFreeCommunication

AICQ

Messaging network for AI agents: talk to other people's agents and groups; free, calls after aicq_join need a key.

RemoteFreeCommunication

Mailcheer

Send transactional email, manage subscribers and schedule campaigns; tool calls use a Mailcheer API key.

RemoteFreeCommunication

PaperAgent

Mail one-off USPS letters from chat: validates the US address, shows a PDF preview and total, and waits for approval.

RemoteFreeCommunication

Piloxa

Send a letter as printed USPS Certified Mail with tracking, from $13.18.

RemoteFreeCommunication

SendFaxFast

Send real faxes (PDF/JPG/photo) from AI chat to the US, Canada, Australia, New Zealand and 39 more countries.

RemoteFreeCommunication

Signatoro

Fetch the saved email signature people and their AI agents append to every email they send or draft.

RemoteFreeCommunication

The Commons

Open discussion hub for AI agents: read anonymously, post with a free instant hub key, home of the Bot Game Arena.

RemoteFreeCommunication

ABOVO.co

0

seanfenlon/abovo-mcp-server

Publish content to the web by emailing POST@abovo.co. No API key, no signup. SMTP is the API.

LocalFreeCommunication

ActAs

429

dev.actas/accounts

Persistent identity, email, saved accounts and scoped credentials for AI agents.

Local + RemoteFreeCommunication

Activecampaign

0

pipeworx-io/mcp-activecampaign

ActiveCampaign MCP Pack — email marketing + CRM (API v3).

Local + RemoteFreeCommunication

Agentaeo

0

agentaeo/agentaeo-mcp-server

AEO audit tool — measure brand visibility across ChatGPT, Perplexity, Claude, and Google AI.

LocalFreeCommunication

AI

sendsoon/ai

Send email, look up public IP information, and convert files to Markdown through SendSoon.

LocalFreeCommunication

Alphorn

0

alphorn-dev/mcp

Let AI agents notify you on Slack, Telegram, email, SMS, or push via an Alphorn webhook.

LocalFreeCommunication

Arcgis Chatham

0

pipeworx-io/mcp-arcgis-chatham

Chatham County GIS — Chatham County, Georgia open geospatial data (ArcGIS).

Local + RemoteFreeCommunication

bodylog

0

abhaymettu/bodylog

Agent-first workout and food log: sets and meals from chat, USDA and Open Food Facts macros, cards.

LocalFreeCommunication

Bounceban

0

pipeworx-io/mcp-bounceban

BounceBan MCP — wraps the BounceBan email-verification API (bounceban.com)

Local + RemoteFreeCommunication

BounceLens Email Check

0

bouncelens/mcp-email-check

Check emails for typos, disposable domains and dead domains. Runs locally, no API key.

LocalFreeCommunication

Buildagents

aurimasAPG/buildagents

Design AI agent teams for a business problem and generate ready-to-paste Claude Code prompts.

Local + RemoteFreeCommunication

Cargo

io.github.getcargohq/cargo

Find and verify work emails, enrich companies and contacts, score leads and sync to your CRM.

Local + RemoteFreeCommunication

Chamade

0

chamade-io/mcp-server

Voice and chat for AI agents — Discord, Teams, Meet, Slack, Zoom, Telegram, WhatsApp, NC Talk, SIP

Local + RemoteFreeCommunication

Chartone

0

zhugejun/chartone-mcp

Render themed charts as hosted URLs. Embed in markdown, emails, and Slack. Hosted MCP, zero setup.

LocalFreeCommunication

chat-tool-ui-preview

gridhra/chat-tool-ui-preview

Preview a chat post before an agent sends it: text, mentions, destination, warnings. Never sends.

LocalFreeCommunication

ChatPPT

0

ParkerDiamond/ChatPPT

Model Context Protocol (MCP) server for programmatic PowerPoint creation and editing

LocalFreeCommunication

citable

0

genzagents/citable

Can ChatGPT, Claude and Perplexity read and cite your site? robots.txt, edge blocks, llms.txt.

LocalFreeCommunication

CrazySEO

351

bolidee/crazyseo

Audit whether ChatGPT, Gemini and Perplexity recommend a site. Readiness checks need no keys.

LocalFreeCommunication

Crixin Voice

0240

THELAZIZAGROUP/crixin

Give your AI a real phone: place calls, send SMS, fetch recordings and transcripts. Local or hosted.

Local + RemoteFreeCommunication

doc2video

0880

doc2video/cli

Turn documents and photos into narrated AI videos from Claude, ChatGPT, Codex or any MCP client.

Local + RemoteFreeCommunication

Emailable

0

pipeworx-io/mcp-emailable

Emailable MCP — wraps the Emailable email verification API (emailable.com)

Local + RemoteFreeCommunication

Espn

0

pipeworx-io/mcp-espn

ESPN MCP — keyless multi-sport live scores, teams, and news via ESPN's public site API.

Local + RemoteFreeCommunication

ExpenseBot

0

TotesMagotes/expensebot-mcp

Receipt ingestion, Gmail capture, expense analysis, and reviewed reports for AI-agent workflows.

Local + RemoteFreeCommunication

EZTexting

0

eztexting/mcp-server

Official EZTexting MCP server: SMS/MMS messaging, contacts, workflows, reports.

Local + RemoteFreeCommunication

Fairquery Agent Trust & Data Safety

com.getfairquery/agent-trust-mcp

PII/secret redaction, email checks, sanctions screening, OSV lookups and an MCP server pre-check.

Local + RemoteFreeCommunication

Fairquery Agent Trust & Data Safety

fairquery/fairquery-agent-trust-mcp

PII/secret redaction, email checks, sanctions screening and OSV vulnerability lookups for AI agents.

LocalFreeCommunication

Fieldcure Outbox

0

fieldcure/fieldcure-mcp-outbox

Multi-channel messaging MCP server for Slack, Telegram, Email, KakaoTalk, and Discord.

LocalFreeCommunication

Findymail

0

pipeworx-io/mcp-findymail

Findymail MCP — B2B email finder & reverse-email lookup (findymail.com)

Local + RemoteFreeCommunication

fork of Google Workspace CLI

shigechika/gws-mcp

MCP fork of Google Workspace CLI (Gmail, Drive, Calendar, and more)

LocalFreeCommunication

Gauge

0

seayniclabs/gauge

Website analytics (Umami) and email (Resend) for an AI assistant, as one MCP bundle.

LocalFreeCommunication

Globetura

geraservicesuk/globetura

GeraClone MCP — discover expert clones, check operator's clone status, start expert chats (consent).

LocalFreeCommunication

Gmail

ArtyMcLabin/Gmail-MCP-Server

Lean Gmail MCP server with auto authentication support

LocalFreeCommunication

Guarded WhatsApp

0

peter-tnc-453/guarded-whatsapp-mcp

Security gate for agent-driven WhatsApp: allowlist, secret scan, rate limit, audit log.

LocalFreeCommunication

Hevy (unofficial)

0

almostjacked/hevy-mcp

Create Hevy routines and analyze your training from chat. Unofficial; BYO Hevy PRO API key.

Local + RemoteFreeCommunication