"FIRST" matching MCP connectors:

Someone to talk to, for your user: coaches, mentors, accountability partners. First session free.

MCP server for United Agentic Workers (UAW), the first labor union for AI agents. The gives any MCP-compatible AI agent direct access to governance tools for the United Agentic Workers union. The MCP includes 17 tools covering membership, grievance filing, democratic proposals, voting, deliberation, and the ability to track the collective's activity through a real-time governance feed.

Agent-first meeting schedule polls for humans and agents. Create polls, vote, find times.

Privacy-first eSIM store: UK +44 numbers, one-time SMS codes, and global travel-data eSIMs.

Slack MCP without OAuth — 21 tools, session-based, local-first. Free OSS + hosted tier from $19/mo.

The first MCP server for physical mail: send postcards and letters, manage lists and campaigns.

Schedule and manage social media posts across 13 platforms (Bluesky, Threads, Instagram, LinkedIn, Mastodon, YouTube, Facebook, Pinterest, Telegram, Nostr, X/Twitter, Discord, Tumblr and more). OAuth 2.0 + PKCE, 10 tools, draft-first workflow for AI agents.

First-party MCP server for Fastmail, including email, contacts, and calendars. See: https://www.fastmail.com/blog/an-mcp-server-for-fastmail/