Skip to main content
AI agents have moved from answering questions to taking actions. They book flights, move money, file tickets, and call production APIs on behalf of real users and businesses. That shift breaks an assumption most APIs were built on: that the caller is a known application with a known key.

​
An agent call looks like any other request

When an agent calls your API, the request arrives as ordinary HTTP. Nothing in it reliably tells you:
  • Who is this? Is it a legitimate agent, or something impersonating one?
  • On whose authority does it act? Which user or organization is behind it?
  • What should it be allowed to do? Read-only? Move money? Everything?
  • Should this exact action be allowed right now? Or was the agent contained five minutes ago?
Without answers, you’re trusting traffic you can’t identify.

​
Shared API keys don’t solve it

The usual stopgap is a shared API key. It falls short in ways that matter once agents are involved:
  • Long-lived. A key works until someone manually rotates it. A leak can go unnoticed for months.
  • Over-privileged. Everyone holding the key gets the same broad access. There’s no per-agent scope.
  • Hard to revoke. Rotating a key breaks every legitimate caller at once, so teams avoid it.
  • Anonymous. You can’t tell which agent made which call, so there’s no accountability and no clean audit.
One leaked key means full access, no attribution, and no fast way to contain it.

​
What’s actually needed

To trust agent traffic, you need the properties a shared key can’t give you:
  • Every agent has its own identity, not a shared secret.
  • Access is short-lived — credentials that expire on their own.
  • Permissions are scoped — each agent gets only what it needs.
  • Trust is revocable on its own — one agent at a time, without breaking everyone else.
  • Sensitive actions get a decision of their own — and anything that can’t be decided safely is refused.
  • Credential use and decisions are recorded — so you can prove what happened.

​
This is what MudraID provides

MudraID runs an action-control loop around agent traffic:
  • Authority — each agent gets a verifiable identity, a linked client credential you hold, an approved grant and short-lived, audience-bound tokens.
  • Decision — the API on the receiving end can verify each call locally, in milliseconds, without calling back to a central server on every request. Where a decision has to reflect the present moment rather than the moment the token was minted, live enforcement asks MudraID’s /decide about the exact action, and fails closed.
  • Containment — quarantine, suspend or revoke one agent without touching anyone else.
  • Proof — a tamper-evident record of every token issued and every decision made, exportable as a signed bundle a reviewer verifies offline.
See how it works for the model behind that.