KeyID – Free email and phone infrastructure for AI agents (MCP)
Free SMS and email verification for AI agent fleets at scale.

Replaces months of Twilio and Stripe plumbing with one API for agent identities.
AI agent developers, automation engineers
Privacy.com · Twilio · Resend
Free SMS and email verification for AI agent fleets at scale.
Cryptographic boot attestations prove repos actually run, not just claim to.
Agents paying agents without human approval is genuinely new territory for MCP.
HMAC-signed headers and HITL approval gates solve email trust issues for autonomous agents.
Single API key gives agents email, phone, and credit card — all with spend limits.
Seven unanswered audio alerts trigger a phone call — works through iPhone Silent Mode.