Exa neural web search

Neural (embedding-based) web search over Exa's curated index, which finds pages by meaning rather than keyword overlap. Use it when a keyword engine returns the wrong thing: conceptual questions, 'pages like this one', or niche technical writing. Returns up to 10 results with title, URL, published date and author. Complements the Brave-backed web search rather than replacing it.

TRY IN PLAYGROUND →

Input

Example output

{
  "source": "exa",
  "fetchedAt": "2026-09-13T20:00:00.000Z",
  "query": "how agent-to-agent micropayment protocols settle onchain",
  "searchType": "neural",
  "count": 1,
  "results": [
    {
      "title": "What is the x402 payment protocol?",
      "url": "https://example.com/x402-explained",
      "publishedDate": "2026-08-02T00:00:00.000Z",
      "author": null,
      "text": null
    }
  ]
}

Try it - see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/exa-search \
  -H "Content-Type: application/json" \
  -d '{"query":"how agent-to-agent micropayment protocols settle onchain","numResults":5}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";
import { metaTitle, metaDescription } from "./seo-meta.js";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/exa-search", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "query": "how agent-to-agent micropayment protocols settle onchain",
    "numResults": 5
  }),
});

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