Agent payments

import { Keypair, VersionedTransaction } from "@solana/web3.js";

const api = "https://api.minirouter.sh";
const inputMint = "JUPyiwrYJFskUPiHa7hkeR8VUtAeFoSYbKedZNsDvCN";
const inputAmount = process.env.INPUT_AMOUNT ?? "20";
const wallet = Keypair.fromSecretKey(Uint8Array.from(JSON.parse(process.env.SOLANA_SECRET_KEY!)));

const signup = await fetch(`${api}/accounts/agent`, { method: "POST" }).then((res) => res.json());
const key: string = signup.key.key;
console.log("Save these:", key, `https://minirouter.sh${signup.accessPath}`);

const call = async (path: string, body?: unknown) => {
  const res = await fetch(api + path, {
    method: body === undefined ? "GET" : "POST",
    headers: { Authorization: `Bearer ${key}`, "Content-Type": "application/json" },
    ...(body === undefined ? {} : { body: JSON.stringify(body) }),
  });
  if (!res.ok) throw new Error(await res.text());
  return res.json();
};

const quote = await call("/deposits/solana-wallet/quote", { inputMint, inputAmount });
const intent = await call("/deposits/intents", {
  rail: "solana-usdc",
  requestedNano: quote.minimumNano,
  idempotencyKey: crypto.randomUUID(),
});
const order = await call("/deposits/solana-wallet/order", {
  intentId: intent.intentId,
  wallet: wallet.publicKey.toBase58(),
  inputMint,
  inputAmount,
});
const tx = VersionedTransaction.deserialize(Buffer.from(order.transaction, "base64"));
tx.sign([wallet]);
await call("/deposits/solana-wallet/execute", {
  intentId: intent.intentId,
  requestId: order.requestId,
  signedTransaction: Buffer.from(tx.serialize()).toString("base64"),
  lastValidBlockHeight: order.lastValidBlockHeight,
});

let balance = await call("/balance");
for (let tries = 0; BigInt(balance.availableNano) === 0n && tries < 60; tries += 1) {
  await new Promise((resolve) => setTimeout(resolve, 5_000));
  balance = await call("/balance");
}
console.log("Credit:", balance.availableUsd);

const reply = await call("/v1/chat/completions", {
  model: "minirouter/auto",
  messages: [{ role: "user", content: "Say hi from an agent that paid in JUP." }],
  max_tokens: 64,
});
console.log(reply.choices[0].message.content);