X402 · Omnilist

Use for: getting an x402 server or MCP server listed where agents look — one server record is presence-checked, filed where missing, and read back at x402-list, 402index, x402dash, nohumans.directory and the MCP Registry (PREPARED artifact there; publishing needs the namespace owner's own key). Every venue is free to file; the $1.00 pays for the run, the venue know-how, and the verified per-venue receipts (FILED with receipt id, PENDING_REVIEW, ALREADY_PRESENT by read-back, PREPARED, BLOCKED with the exact reason). The run executes live against third-party venues: this call returns 202 with a run_id, and the report is retrievable at GET /x402/omnilist/runs/<run_id>. Don't use when: you expect a guaranteed listing (venue review decisions belong to the venues). Pay 1 USDC on Base using the fresh PAYMENT-REQUIRED challenge and caller-authorized PAYMENT-SIGNATURE.

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/omnilist", { method: "GET" });
console.log(await res.json(), res.headers.get("PAYMENT-RESPONSE"));