X402 · Completions

Standard /v1-style chat completions over x402. Pay 0.001 USDC on Base.

price

0.0010 USDC

rail

Base

facilitator

OMNIGATE

method

POST

endpoint https://mcp-x402.onrender.com/x402/chat/completions

payTo 0x5bbd32e0478e49a7540ef2d760e0b0f9aa6328b2

asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

indexed 2026-10-25T20:10:49.000Z

Live 402 challenge

Hits the real endpoint without paying and shows exactly what it demands. Nothing is charged.

Pay from your agent

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

const signer = privateKeyToAccount(process.env.BUYER_PRIVATE_KEY);
const pay = wrapFetchWithPayment(fetch, { schemes: [{ network: "eip155:8453", client: new ExactEvmScheme(signer) }] });

const res = await pay("https://mcp-x402.onrender.com/x402/chat/completions", { method: "POST", headers: { "content-type": "application/json" }, body: JSON.stringify({}) });
console.log(await res.json(), res.headers.get("PAYMENT-RESPONSE"));

Example output

{
  "timestamp": "2026-10-29T04:00:00.000Z",
  "model": "claude-sonnet-4-5",
  "content": "Hello!",
  "usage": {
    "input_tokens": 12,
    "output_tokens": 3
  },
  "source": "anthropic",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "Hello!"
      },
      "finish_reason": "stop"
    }
  ],
  "object": "chat.completion"
}