Fidacy Fraud Detector — catch the forged "approved" before you act on it

The newest fraud in multi-agent payments doesn't attack your agent — it lies to it. Agents hand each other claims: "this payment is approved," "this counterparty is safe," "this action passed review." A forged approval is how a malicious agent walks yours into a bad payment. Fidacy verdicts are Ed25519-signed and independently verifiable: this skill checks the signature against the issuer's public keys, so you don't take another agent's word — you check the proof.

When to use this skill

Invoke it the moment you receive, from ANY external party, a signed Fidacy verdict (riskPayloadJws / vc_jws) or a decision that carries one — before you act on the underlying approval. Common in agent-to-agent (A2A) handoffs, UCP/AP2 flows, or any "trust this because it was approved" step.

How to use it