X402 A2a Delegation Deal Room

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.blockchainmoneymap.com/api/x402/x402-a2a-delegation-deal-room' \
  -H 'content-type: application/json' \
  --data-raw '{"facts":{"auth_boundary":"delegate cannot spend or call other paid tools","delegate_agent_summary":"Evidence agent with wallet report skill and x402 pricing.","expected_output":"JSON report with decision, confidence, and limitations.","handoff_artifacts":"task brief, output schema, and receipt label","payment_terms":"0.01 USD only after challenge matches route.","requester_agent_summary":"Buyer router agent with JSON output requirement.","skill_match_policy":"wallet report skill required","task_description":"Prepare a wallet risk evidence summary."},"mode":"compare"}'

# 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-delegation-deal-room' \
  -H 'content-type: application/json' \
  --data-raw '{"facts":{"auth_boundary":"delegate cannot spend or call other paid tools","delegate_agent_summary":"Evidence agent with wallet report skill and x402 pricing.","expected_output":"JSON report with decision, confidence, and limitations.","handoff_artifacts":"task brief, output schema, and receipt label","payment_terms":"0.01 USD only after challenge matches route.","requester_agent_summary":"Buyer router agent with JSON output requirement.","skill_match_policy":"wallet report skill required","task_description":"Prepare a wallet risk evidence summary."},"mode":"compare"}' \
  | 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-delegation-deal-room&method=POST
const res = await pay("https://api.blockchainmoneymap.com/api/x402/x402-a2a-delegation-deal-room", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "facts": {
      "auth_boundary": "delegate cannot spend or call other paid tools",
      "delegate_agent_summary": "Evidence agent with wallet report skill and x402 pricing.",
      "expected_output": "JSON report with decision, confidence, and limitations.",
      "handoff_artifacts": "task brief, output schema, and receipt label",
      "payment_terms": "0.01 USD only after challenge matches route.",
      "requester_agent_summary": "Buyer router agent with JSON output requirement.",
      "skill_match_policy": "wallet report skill required",
      "task_description": "Prepare a wallet risk evidence summary."
    },
    "mode": "compare"
  }),
});
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-delegation-deal-room",
        json={
            "facts": {
                "auth_boundary": "delegate cannot spend or call other paid tools",
                "delegate_agent_summary": "Evidence agent with wallet report skill and x402 pricing.",
                "expected_output": "JSON report with decision, confidence, and limitations.",
                "handoff_artifacts": "task brief, output schema, and receipt label",
                "payment_terms": "0.01 USD only after challenge matches route.",
                "requester_agent_summary": "Buyer router agent with JSON output requirement.",
                "skill_match_policy": "wallet report skill required",
                "task_description": "Prepare a wallet risk evidence summary.",
            },
            "mode": "compare",
        },
    )
    print(res.status_code, res.text)