Effectuer des Paiements par Agents

curl --request POST \
  --url https://api.blockradar.co/v1/wallets/{walletId}/addresses \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
    "name": "Research agent budget",
    "disableAutoSweep": true,
    "metadata": {
      "purpose": "agent-payments"
    }
  }'

const response = await fetch(
  `https://api.blockradar.co/v1/wallets/${walletId}/addresses`,
  {
    method: 'POST',
    headers: {
      'Content-Type': 'application/json',
      'x-api-key': apiKey
    },
    body: JSON.stringify({
      name: 'Research agent budget',
      disableAutoSweep: true,
      metadata: { purpose: 'agent-payments' }
    })
  }
).then(r => r.json());

console.log('Agent address:', response.data.address);
console.log('Address ID:', response.data.id);

curl --request POST \
  --url https://api.blockradar.co/v1/wallets/{walletId}/addresses/{addressId}/signing/typed-data \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
    "domain": {
      "name": "USD Coin",
      "version": "2",
      "chainId": 8453,
      "verifyingContract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
    },
    "types": {
      "TransferWithAuthorization": [
        { "name": "from", "type": "address" },
        { "name": "to", "type": "address" },
        { "name": "value", "type": "uint256" },
        { "name": "validAfter", "type": "uint256" },
        { "name": "validBefore", "type": "uint256" },
        { "name": "nonce", "type": "bytes32" }
      ]
    },
    "message": {
      "from": "0x947514e4B803e312C312da0F1B41fEDdbe15ae7a",
      "to": "0x209693Bc6afc0C5328bA36FaF03C514EF312287C",
      "value": "10000",
      "validAfter": "1791106604",
      "validBefore": "1791107264",
      "nonce": "0x312a453ed3d129ba71de863aa623245c0e5e120bad410d995cea6739aa8ee98b"
    }
  }'

import { randomBytes } from 'node:crypto';

const now = Math.floor(Date.now() / 1000);
const authorization = {
  from: agentAddress,
  to: accepted.payTo,
  value: accepted.amount,
  validAfter: String(now - 600),
  validBefore: String(now + accepted.maxTimeoutSeconds),
  nonce: '0x' + randomBytes(32).toString('hex'),
};

const res = await fetch(
  `https://api.blockradar.co/v1/wallets/${walletId}/addresses/${addressId}/signing/typed-data`,
  {
    method: 'POST',
    headers: { 'Content-Type': 'application/json', 'x-api-key': apiKey },
    body: JSON.stringify({
      domain: {
        name: accepted.extra.name,
        version: accepted.extra.version,
        chainId: Number(accepted.network.split(':')[1]),
        verifyingContract: accepted.asset,
      },
      types: {
        TransferWithAuthorization: [
          { name: 'from', type: 'address' },
          { name: 'to', type: 'address' },
          { name: 'value', type: 'uint256' },
          { name: 'validAfter', type: 'uint256' },
          { name: 'validBefore', type: 'uint256' },
          { name: 'nonce', type: 'bytes32' },
        ],
      },
      message: authorization,
    }),
  }
);
const signed = await res.json();
if (!res.ok) throw new Error(`Signing failed: ${JSON.stringify(signed.message)}`);

const signature = signed.data.signedTransaction.signature;