x402serps logox402serps

Web search in Vercel AI SDK with x402serps

The AI SDK's MCP client (createMCPClient from @ai-sdk/mcp in AI SDK 6; experimental_createMCPClient from ai in AI SDK 5) connects over HTTP with headers and turns x402serps tools into AI SDK tools.

AI SDK 6

import { createMCPClient } from "@ai-sdk/mcp";
import { generateText, stepCountIs } from "ai";

const mcp = await createMCPClient({
  transport: {
    type: "http",
    url: "https://x402serps.com/api/mcp",
    headers: { Authorization: `Bearer ${process.env.X402SERPS_KEY}` }, // or { "X-Trial": "1" }
  },
});
try {
  const { text } = await generateText({
    model: "openai/gpt-4.1",
    tools: await mcp.tools(),
    stopWhen: stepCountIs(5),
    prompt: "Find this week's news about the x402 protocol",
  });
  console.log(text);
} finally {
  await mcp.close();
}

AI SDK 5

Same config, but import experimental_createMCPClient from ai and use transport: { type: "http", url, headers } (or the MCP SDK's StreamableHTTPClientTransport).

Pay per call with x402 instead: tool calls without a trial header or key return the x402 payment requirements, which an x402-aware client can pay in USDC on Base or Solana. Search is $0.004 a call. Buy a credit key on the pricing page.

Pricing · Docs · MCP · Integrations · Help

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