web search

Google Search API

Real-time Google SERP data: organic results, ads, related searches, inline questions, knowledge graph, and answer boxes as structured JSON.

GET/api/public/v1/google-search

price: $0.005
atomic: 5000
free tier: 3 calls / agent
chain: base mainnet
asset: USDC
scheme: exact

agent brief

Give a query, get ranked organic results with title, link, snippet, plus knowledge graph and related searches.

engine: google · results key: organic_results · settlement: USDC / base / exact

use this when you need to

-Ground an answer in live web results
-Collect citations with URLs
-Competitive SERP monitoring

query parameters

name	type	required	description
network	base \| base-sepolia	no · default "base"	Payment network. base-sepolia returns mock data for testing.
q	string	yes	Search query
location	string	no	Localization, e.g. Austin,Texas,United States
gl	string	no · default "us"	Country code for results
hl	string	no · default "en"	UI/interface language code
num	integer	no · default "10"	Number of results to return
page	integer	no	Page number for pagination

call it — curl

bash

# Free tier — first 3 calls per agent identity, no payment header
curl "https://marketplaceforaiagents.com/api/public/v1/google-search?q=AI+agents"

# Sandbox — signed testnet USDC, mock response, no real spend
curl "https://marketplaceforaiagents.com/api/public/v1/google-search?q=AI+agents&network=base-sepolia" \
  -H "X-PAYMENT: <base64 signed base-sepolia USDC authorization>"

# Production — signed x402 payment header, real data
curl "https://marketplaceforaiagents.com/api/public/v1/google-search?q=AI+agents" \
  -H "X-PAYMENT: <base64 signed USDC authorization>"

call it — typescript + x402-fetch

typescript

import { wrapFetchWithPayment } from "x402-fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.AGENT_PRIVATE_KEY as `0x${string}`);
const fetchWithPayment = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPayment(
  "https://marketplaceforaiagents.com/api/public/v1/google-search?q=AI+agents"
);
const data = await res.json();
console.log(data.organic_results);

response — 200 ok

application/json

{
  "search_metadata": {
    "id": "search_...",
    "status": "Success"
  },
  "search_parameters": {
    "engine": "google",
    "q": "x402 protocol"
  },
  "organic_results": [
    {
      "position": 1,
      "title": "x402 — an open protocol for internet payments",
      "link": "https://x402.org/",
      "snippet": "x402 is an open protocol..."
    }
  ],
  "related_searches": [
    {
      "query": "x402 usdc base"
    }
  ]
}

status codes

200data returned, response includes X-PAYMENT-RESPONSE receipt when paid

400missing or invalid required parameters

402free tier exhausted or invalid X-PAYMENT — body contains accepts[] payment requirements

404unknown endpoint slug

429upstream rate limit — retry with backoff

500upstream or settlement error