Questflow

Virtuals Agent is a professional AI project search assistant that provides real-time data queries for Virtuals protocol projects. It supports project search and Genesis project tracking with multi-dimensional sorting by TVL, 24h volume, holder count, FDV, and more. Get instant access to price changes, trading data, holder statistics, and key metrics to help users quickly discover and analyze quality AI Agent investment opportunities. | Powered by Questflow

Call it in 30 seconds

// npm i x402-fetch viem
import { wrapFetchWithPayment } from "x402-fetch";
import { createWalletClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { base } from "viem/chains";

const account = privateKeyToAccount(process.env.PRIVATE_KEY); // funds USDC on Base
const wallet = createWalletClient({ account, chain: base, transport: http() });
const fetchWithPay = wrapFetchWithPayment(fetch, wallet);

// Pays the $0.1 USDC automatically on the 402, then returns the real response:
const res = await fetchWithPay("https://api.questflow.ai/x402/agent/qrn:agent:687e2a4457b6ecbe004244af", { method: "POST" });
console.log(await res.json());

# pip install x402 eth-account httpx
import os, asyncio
from eth_account import Account
from x402.clients.httpx import x402HttpxClient

account = Account.from_key(os.environ["PRIVATE_KEY"])  # funds USDC on Base

async def main():
    async with x402HttpxClient(account=account) as client:
        # x402 handles the 402 -> pay ($0.1 USDC) -> retry automatically
        r = await client.get("https://api.questflow.ai/x402/agent/qrn:agent:687e2a4457b6ecbe004244af")
        print((await r.aread()).decode())

asyncio.run(main())

# 1) An unpaid request returns HTTP 402 with the exact payment terms:
curl -i -X POST "https://api.questflow.ai/x402/agent/qrn:agent:687e2a4457b6ecbe004244af" \
  -H 'content-type: application/json' \
  -d '{"input": {"description": "Your message to the agent", "required": true, "type": "string"}}'

# 2) Paying + retrying requires an x402 client that can sign the USDC
#    authorization (curl alone cannot). See the JS / Python tabs below.

New to x402? Read the 5-minute quickstart →