x402 Agent 決済

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const signer = privateKeyToAccount(process.env.EVM_PRIVATE_KEY as `0x${string}`);
const client = new x402Client();
client.register("eip155:*", new ExactEvmScheme(signer));

const paidFetch = wrapFetchWithPayment(fetch, client);

const resp = await paidFetch("https://api.arouter.ai/v1/chat/completions", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    model: "openai/gpt-5.4",
    messages: [{ role: "user", content: "Hello" }],
  }),
});

import { ARouter, authenticateWithSIWx } from "@arouter/sdk";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.EVM_PRIVATE_KEY as `0x${string}`);

const { jwt } = await authenticateWithSIWx(
  "https://api.arouter.ai",
  { address: account.address, signMessage: (msg) => account.signMessage({ message: msg }) },
);

const client = new ARouter({ baseURL: "https://api.arouter.ai", apiKey: jwt });

import arouter "github.com/arouter-ai/arouter-go"

signer := arouter.NewEvmWalletSigner(privateKey)
result, err := arouter.AuthenticateWithSIWx(ctx, "https://api.arouter.ai", signer, nil)

client := arouter.NewClient("https://api.arouter.ai", result.JWT)

import (
    "github.com/ethereum/go-ethereum/crypto"
    arouter "github.com/arouter-ai/arouter-go"
)

key, _ := crypto.HexToECDSA("your-private-key-hex")

client := arouter.NewClient(
    "https://api.arouter.ai",
    "",  // API Key 不要
    arouter.WithX402CoinbasePayment(key),
)

solanaKey := ed25519.PrivateKey(yourKeyBytes)
client := arouter.NewClient("https://api.arouter.ai", "",
    arouter.WithX402SolanaPayment(solanaKey),
)

import { ARouter, withX402EvmPayment } from "@arouter/sdk";
import { privateKeyToAccount } from "viem/accounts";

const signer = privateKeyToAccount(process.env.EVM_PRIVATE_KEY as `0x${string}`);
const client = withX402EvmPayment(
  new ARouter({ baseURL: "https://api.arouter.ai", apiKey: "" }),
  signer,
);

import { ARouter, withX402Payment } from "@arouter/sdk";

const client = withX402Payment(
  new ARouter({ baseURL: "https://api.arouter.ai", apiKey: "" }),
  {
    evm: { signer: evmAccount },
    solana: { signer: solanaSigner },
  },
);

GET /v1/x402/chat?model=openai/gpt-5.4&message=Hello&system=Be+brief&max_tokens=100