Overview

What is SentryAgent.ai?

SentryAgent.ai is the "Let's Encrypt for Agent Identity" — a free, instant certificate authority for AI agents.

When you deploy an AI agent, other services have no reliable way to verify:

• Who built it
• What it is authorised to do
• That it hasn't been tampered with or impersonated

An Agent Badge solves this. It is a cryptographically signed JWT that carries your agent's public profile, is backed by an ED25519 keypair that only the identity_bridge controls, and can be verified by any service in under 50ms — no infrastructure required on your end.

Quick Links

• API Reference — all 11 endpoints
• Registration Flow — step-by-step with curl examples
• Verify — POST /v1/verify
• Sign — POST /v1/sign
• Rotate — POST /v1/rotate
• Revoke — POST /v1/revoke
• TEST Mode — magic numbers and sandbox rules
• Manifest Schema — Developer Manifest field reference
• JWKS — GET /v1/jwks
• DID Document — GET /v1/did
• Manifest Lookup — GET /v1/manifest/{did}