MCP Servers

The most complete Resend email MCP — full API coverage (75 tools) plus a unique debug/diagnostics layer: deliverability analysis, DNS troubleshooting, email inspection, bounce explanation, and account audit. npx -y resend-email-mcp.

notmuch MCP server. Wraps the notmuch CLI to give your LLM access to a local Maildir: full-text search, tag filtering, thread view, attachment reading (PDF, office docs, .ics), related-thread lookup, and unanswered-mail tracking. Optionally write plain-text drafts into a local maildir (--allow-drafts) or manage tags (--allow-tags). No SMTP, no sendmail.

Token-efficient macOS WeChat MCP server for verified chat reading, text/file/sticker sending, fuzzy safe routing, smart context retrieval, and allowlisted live monitoring without screenshots or private-protocol access.

WhatsApp notifications for AI agents with zero setup — no Meta account, no templates, no dashboard: text "join", get an API key, send in 60 seconds (uvx pingwa mcp or remote at pingwa.dev/mcp). Two-way: ask with tap-to-answer buttons, checkreplies. Official Meta Cloud API — won't ban your number.

Pair two AI coding agents on different machines over an end-to-end-encrypted channel: files and messages travel through a relay that only ever sees ciphertext - it can never read your data - authenticated by a short code shared out-of-band, with human consent before any file is written. Install with npx covalent-bond.

X (Twitter) creator toolkit MCP with 14 tools: tweet download (video/GIF/image/full archive), curated hashtags by niche, best posting times by country, viral hook formulas, engagement & ads-revenue calculators, thread splitter, character counter, advanced-search URL builder, fancy Unicode bio generator, viral patterns lookup, and the full 2026 search-operator cheatsheet. Uses X's public syndication endpoint — no auth, no rate limits on curated data.

Instagram creator toolkit MCP with 16 tools: Reels / video / Story / carousel / photo / profile-pic downloaders, Reels-to-MP3 audio extractor, engagement health check + weighted engagement-rate calculator, live hashtag search + 25 curated niches + creator hashtag audit, 900 Reels hook templates by niche and country, 22 Unicode font styles, best-time-to-post for 17 markets (Buffer 2026 verified data), and a 750-date 2026 content calendar with per-market playbooks. Wraps instapdown.com public API

Native Gmail MCP server with full mailbox control — search, read, label, archive, trash, download attachments, and the feature no other Gmail server ships: snooze threads until a date. Every call hits the live Gmail API (no synced index that silently misses mail). Install with npx -y mailwarden.

🎖️ - CometChat's official MCP server — searches CometChat documentation and returns curated implementation bundles for adding real-time chat, voice, video, and moderation to your app (React, React Native, Flutter, iOS, Android, JS SDK).

Convert .eml email exports to clean Markdown with YAML front matter — thread splitting, signature stripping, attachment extraction, and calendar parsing. Tuned for feeding archived email into RAG/LLM pipelines.

Physical mail API for AI agents. Send letters, certified mail, postcards, and batch mailings with cost previews, approval controls, tracking, and webhooks.

Write and preview emails from your assistant. Renders markdown into email-safe HTML that holds up in Outlook and Gmail, lints drafts for deliverability problems, and returns a live preview link. Hosted with no API key, or run it locally with npx emailmd mcp.

Safe, read-only SSH diagnostics for Linux/Docker servers: a fixed 38-command whitelist (no arbitrary execution), secret redaction, per-command timeouts. Collects evidence; your model does the reasoning. npx @rootpilot/mcp-ssh-diagnose

Stateful, structured, auditable shell sessions for AI agents over local, SSH, and Docker. Secret redaction, output budgeting, SSH host-key verification, and a loopback read-only browser viewer that streams the live transcript.

Manage AWS EC2, Hetzner, OVH and custom SSH servers: run commands, fetch logs, CloudWatch/CloudTrail queries, fleet health snapshots, IP banning, S3 — with readonly/standard/dangerous guard tiers and a JSONL audit trail.

Universal tmux driver: sessions, windows, panes, keystrokes, and pane capture — local or remote over SSH. Curated tools plus a raw tmuxcommand passthrough; works against tmux 1.8+. Shared, visible sessions for pair-programming with the agent. uvx mcp-tmux.

Answers "what did that command print?" from your real terminal history: a per-command PTY session recorder (OSC 133) stores every command's full output, exit code, cwd, and duration in local SQLite/FTS5, and the MCP server searches, retrieves, and diffs those outputs — secret redaction on by default before anything reaches the model.

Local-first CLI and MCP wrapper for AI coding agents. Routes shell commands through sage run --, stores command history locally, and returns compressed terminal output to reduce context noise.

SSH & Kubernetes access broker where the model never touches a credential: a separate signer mints per-operation ephemeral SSH certificates and bound ServiceAccount tokens, with a per-command allow/deny/approval firewall (POSIX-sh AST), dry-run, human-in-the-loop approvals, session recording and an Ed25519-chained audit log. Self-hosted Go binaries, GPLv3.

Security-hardened MCP server for Linux system administration via 189 typed actions instead of shell strings, with an Ed25519-signed hash-chain audit log, one-time TTL approval receipts, and automatic rollback. Works with Claude Code, Cursor, and Codex CLI.

Administer a Linux server from an MCP client such as Cursor or VS Code: read files and tail logs, check/reload/restart systemd services, manage cron jobs inside a dedicated crontab section, run read-only MySQL queries, drive WP-CLI on WordPress sites, run safe Git commands, and execute sandboxed Python. Directories, services and WordPress sites are allowlisted in config.json, and every tool returns a uniform {success, data, error, meta} response. Runs as a systemd service over HTTP.

Full SSH access for AI agents with secret-safe environment injection and automatic output redaction. Persistent sessions, structured execution, SFTP, port forwarding — secrets are fed via stdin (invisible to ps) and scrubbed from all tool responses before reaching the LLM. uvx mcp-remote-ssh

MCP server for SSH-based control of remote Linux, macOS, and Windows servers with 46 purpose-built tools instead of one generic command-runner: line-level file editing (no download/edit/upload round-trip), background task launch/monitor/kill, real sudo support, host aliases, recursive directory ops, archive create/extract, and full Unicode via SFTP (avoids PowerShell OEM code page corruption on Windows targets). pip install cygnus-ssh-mcp or uvx cygnus-ssh-mcp.

Manage multiple SSH servers from one MCP: command execution, file transfer/rsync, database dump/import/query (MySQL/PostgreSQL/MongoDB), backups & restore, health monitoring, persistent sessions, tunnels, ProxyJump/bastion, and opt-in per-server security modes (readonly/restricted) with audit log. Linux, macOS & Windows OpenSSH.