$0.05
per call · USD Coin on Base
Agent Card Validator (A2A): given an Agent Card URL or JSON, deterministically validates it against the A2A spec — required fields, skill schemas, endpoint reachability, security schemes, provider transparency — and returns a compatibility_score, schema_errors and warnings. The trust layer for the agent economy. Deterministic, Ed25519-signed. 0.01 USDC via x402 on Base. SYNTHORA.
Endpoint
POST https://api.hergertsynthora.com/v1/agentcard1
Calls / 30d
1
Unique payers / 30d
Aug 12
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://api.hergertsynthora.com/v1/agentcard", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"card": {
"description": "A2A agent card audit demo",
"name": "Demo Agent",
"skills": [
{
"description": "conversational",
"id": "chat",
"name": "chat"
}
],
"url": "https://example.org",
"version": "1.0.0"
}
}),
});
const data = await res.json();curl -X POST \
"https://api.hergertsynthora.com/v1/agentcard" \
-H "Content-Type: application/json" \
-d '{"card":{"description":"A2A agent card audit demo","name":"Demo Agent","skills":[{"description":"conversational","id":"chat","name":"chat"}],"url":"https://example.org","version":"1.0.0"}}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"niche": "agent_card",
"ok": true,
"result": {
"a2a_conformant": true,
"compatibility_score": 82,
"endpoint_status": 200,
"pricing_declared": false,
"schema_errors": [],
"security_declared": true,
"signed": "ed25519",
"skills_count": 1,
"verdict": "buena",
"warnings": [
"falta campo recomendado: documentationUrl"
]
}
}Payment details
0x10800a5a5b9d72251566ec651e862a8b4b427de0USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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