TypeScript

npm install @ax402/sdk
# Buyer deps (required for /buyer)
npm install @x402/fetch @x402/evm viem

import { Ax402Client, buildUsdcAccept, usdcToAtomic } from "@ax402/sdk";

const client = new Ax402Client({
  baseUrl: process.env.AX402_BASE_URL!,
  apiKey: process.env.AX402_API_KEY!,
});

const apis = await client.apis.list();
await client.endpoints.create(apiId, {
  method: "GET",
  path_pattern: "/v1/*",
  accepts: [buildUsdcAccept("exact", usdcToAtomic("0.10"))],
});

await client.apis.create({
  name: "Search",
  slug: "search",
  upstream_base_url: "https://upstream.example.com",
  discovery_guidance: "Use POST /search with a query field.",
  discovery_contact_email: "support@example.com",
});
const urls = await client.apis.discovery(apiId);
await client.endpoints.update(apiId, endpointId, {
  request_schema: { type: "object", properties: { query: { type: "string" } } },
  response_schema: { type: "object", additionalProperties: true },
});

import { buyerClientFromEnv } from "@ax402/sdk/buyer";

const client = await buyerClientFromEnv();
const { response, payment } = await client.pay({
  url: "https://my-api.ax402.io/v1/foo",
});

const client = await buyerClientFromEnv({ batch: { depositMultiplier: 5 } });