API reference · CAIN Guard

Verify A2A Card

POST /fabric/guard/a2a/verify

Last reviewed 2026-10-02

POST /fabric/guard/a2a/verify

Request body

A2AVerifyRequest (required)

Responses

Try it

The request goes from your browser straight to this site. Your key is not stored unless you tick the box, and then only in this tab's session storage.

Code

curl -sS -X POST 'https://cainstudio.online/fabric/guard/a2a/verify' \
  -H "X-API-Key: $CAIN_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"agent_id": "agent-id", "capabilities": ["capabilities"], "signature": "signature"}'

import json, os, urllib.request

req = urllib.request.Request('https://cainstudio.online/fabric/guard/a2a/verify', method='POST',
    headers={"X-API-Key": os.environ["CAIN_API_KEY"], "Content-Type": "application/json"},
    data=json.dumps({
      "agent_id": "agent-id",
      "capabilities": [
        "capabilities"
      ],
      "signature": "signature"
    }).encode())
with urllib.request.urlopen(req, timeout=60) as r:
    print(r.status, json.load(r))

const res = await fetch("https://cainstudio.online/fabric/guard/a2a/verify", {
  method: "POST",
  headers: {
    "X-API-Key": process.env.CAIN_API_KEY!,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "agent_id": "agent-id",
    "capabilities": [
      "capabilities"
    ],
    "signature": "signature"
  }),
});
console.log(res.status, await res.json());

Schemas used

HTTPValidationError · ValidationError · A2AVerifyRequest

← Revoke Card · all 10 CAIN Guard calls · Verify Action Plan →