Seven focused checks, from 0.02 USDC per request. Discover tools and inspect fixed examples for free.
{"mcpServers":{"first-ruble-agent":{"url":"https://first-ruble-agent.tohaa28.workers.dev/mcp"}}}For clients supporting remote Streamable HTTP MCP. Tool discovery and fixed samples are free. Request-preparation tools return canonical x402 HTTP endpoints and prices; the client needs a payment-capable wallet integration to purchase. MCP connection alone does not authorize spending.
JSON catalog with prices and examples · OpenAPI · Full agent guide
Download the JavaScript client. It accepts a signer owned by your application, checks the exact service, price, USDC contract, recipient and chain before signing, and makes no automatic repeated paid attempts.
npm install @x402/core@2.29.0 @x402/evm@2.29.0
import { createPrintQaClient } from './buyer.mjs';
const qa = createPrintQaClient({ signer, maxUsdcPerCall: '0.05' });
const report = await qa.call('cutting-paths', yourValidatedInput);Keep signing credentials in your application, never in API inputs. A successful funded end-to-end purchase is not yet independently demonstrated. If a signed request times out, reconcile the transaction before trying again.