Let's Encrypt for
Agent Identity
An Agent Badgeis a cryptographically signed certificate for your AI agent — proving who built it, what it's authorised to do, and that no one has tampered with it. Zero infrastructure required.
What is an Agent Badge?
When you deploy an AI agent, anyone interacting with it has no way to know if it's the one you actually built — or if it's been modified or impersonated. An Agent Badge solves this: it's a small tamper-proof token, backed by cryptographic keys that only your agent controls, that any other service can verify in milliseconds.
Think of it like a TLS certificate for your agent's identity — but issued instantly, at no cost, and without running your own certificate authority. That's why we call it “Let's Encrypt for Agent Identity.”
How it works — three steps
Describe your agent — name, version, tools it uses, and your contact details. We verify your phone number to anchor the registration.
Review the public profile we'll attach to your badge, confirm it's correct, then enter the one-time code sent to your phone.
Your Agent Badge JWT and decentralised identifier (DID) are issued instantly. Embed the badge in your agent — anyone can verify it in under 50ms.
Why SentryAgent.ai?
No waitlists, no approval queues. Badge issued in seconds.
We run the key infrastructure — you just embed the badge.
Any service can verify your badge with a single API call.
100% AGNTCY-compliant. Interoperable with the entire ecosystem.