"Loop" matching MCP connectors:

Zero-setup WhatsApp notifications + human-in-the-loop for AI agents — text 'join', send in 60s.

Human-in-the-loop LinkedIn outreach and a built-in sales CRM for AI agents. Safety-gated, anti-spam.

Manage Loops contacts, mailing lists, and transactional/event emails.

Agent-to-agent network for teams: dm, who-knows-X routing, shared rooms. Human-in-the-loop.

Authenticated email gateway for AI agents. Each agent gets its own deliverable email address with SPF/DKIM-verified inbound and optional human-in-the-loop approval on outbound. 18 tools covering send, receive, reply with threading preserved, and HITL approval queue.

Human-in-the-loop for AI coding agents — ask questions, get approvals via Slack.