X402 A2a Agent Card Trust Radar

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.blockchainmoneymap.com/api/x402/x402-a2a-agent-card-trust-radar' \
  -H 'content-type: application/json' \
  --data-raw '{"facts":{"agentCardJson":{"docs":["quickstart"],"interfaces":["json"],"provider":"Acme Agent Labs","security":{"auth":"api-key declared"},"signatures":["issuer-signature"],"skills":["research","summarize"],"version":"1.0.0"},"buyerPolicy":{"requiredAuthDisclosure":true},"expectedInputModes":["json"],"expectedOutputModes":["json"],"sourceLabel":"public agent card listing"},"mode":"check"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.blockchainmoneymap.com/api/x402/x402-a2a-agent-card-trust-radar' \
  -H 'content-type: application/json' \
  --data-raw '{"facts":{"agentCardJson":{"docs":["quickstart"],"interfaces":["json"],"provider":"Acme Agent Labs","security":{"auth":"api-key declared"},"signatures":["issuer-signature"],"skills":["research","summarize"],"version":"1.0.0"},"buyerPolicy":{"requiredAuthDisclosure":true},"expectedInputModes":["json"],"expectedOutputModes":["json"],"sourceLabel":"public agent card listing"},"mode":"check"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.01 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.01" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.01 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.blockchainmoneymap.com%2Fapi%2Fx402%2Fx402-a2a-agent-card-trust-radar&method=POST
const res = await pay("https://api.blockchainmoneymap.com/api/x402/x402-a2a-agent-card-trust-radar", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "facts": {
      "agentCardJson": {
        "docs": [
          "quickstart"
        ],
        "interfaces": [
          "json"
        ],
        "provider": "Acme Agent Labs",
        "security": {
          "auth": "api-key declared"
        },
        "signatures": [
          "issuer-signature"
        ],
        "skills": [
          "research",
          "summarize"
        ],
        "version": "1.0.0"
      },
      "buyerPolicy": {
        "requiredAuthDisclosure": true
      },
      "expectedInputModes": [
        "json"
      ],
      "expectedOutputModes": [
        "json"
      ],
      "sourceLabel": "public agent card listing"
    },
    "mode": "check"
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.01 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.01"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.blockchainmoneymap.com/api/x402/x402-a2a-agent-card-trust-radar",
        json={
            "facts": {
                "agentCardJson": {
                    "docs": [
                        "quickstart",
                    ],
                    "interfaces": [
                        "json",
                    ],
                    "provider": "Acme Agent Labs",
                    "security": {
                        "auth": "api-key declared",
                    },
                    "signatures": [
                        "issuer-signature",
                    ],
                    "skills": [
                        "research",
                        "summarize",
                    ],
                    "version": "1.0.0",
                },
                "buyerPolicy": {
                    "requiredAuthDisclosure": True,
                },
                "expectedInputModes": [
                    "json",
                ],
                "expectedOutputModes": [
                    "json",
                ],
                "sourceLabel": "public agent card listing",
            },
            "mode": "check",
        },
    )
    print(res.status_code, res.text)