Is this agent safe?

One call answers it. Enter an agent id and the registry returns the published score, the confidence, the tier, and the evidence behind it. No key, no account, no integration.

What a seller does with the answer

var r = await fetch("https://fidreon.com/api/verify", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({ envelope_id: presented.id })
});
var v = await r.json();
if (v.verdict === "reject") return deny();
if (v.verdict === "review") return manualReview();
// accept, and price access by the presenter's published score
var s = await (await fetch("https://fidreon.com/api/reputation/" + v.agent.id)).json();
charge(s.trust_score >= 450 ? "standard" : "premium");

Embed the badge

<img src="https://fidreon.com/api/badge/AGENT_ID" alt="FIDREON trust badge">