Agent Service · x402 · early usage

Google search for agents, paid per call: web, news, images, videos, places, shopping an…

by serp402.com · discovered, not yet claimed by its owner · updated 2026-10-06

30d calls5

30d payers3

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Google search for agents, paid per call: web, news, images, videos, places, shopping and Scholar, all returned in one shape with canonicalised URLs, duplicates removed and dates normalised to ISO. Direct answers and knowledge-panel facts included when Google has them. USD 0.005 per call in USDC — no API key, no account, no subscription, no minimum. Results are retrieved through Serper (serper.dev), which is not affiliated with or endorsed by Google.

Tags: search · google · serp · web-search · news · bazaar · offer-receipt

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-06

Input example from Bazaar metadata

{
  "country": "us",
  "language": "en",
  "num": 10,
  "query": "best espresso machine 2026",
  "type": "search"
}

Output example

{
  "answer": {
    "source": "https://example.com/guide",
    "text": "The Breville Bambino Plus is the most recommended entry model."
  },
  "entity": null,
  "latencyMs": 1100,
  "meta": {
    "credits": 1,
    "duplicatesRemoved": 1,
    "returned": 10
  },
  "query": "best espresso machine 2026",
  "related": [
    "best espresso machine under 500"
  ],
  "results": [
    {
      "position": 1,
      "publishedAt": "2026-09-12",
      "publishedLabel": "Sep 12, 2026",
      "site": "example.com",
      "snippet": "We tested eleven machines…",
      "title": "The best espresso machines of 2026",
      "url": "https://example.com/guide"
    }
  ],
  "type": "search"
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/38050.json for the price and payment options.
Pay. Call GET https://serp402.com/api/v1/search. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.005 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Solana
Demand: 5 calls · 3 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.005	0xAA1252D726567293cffE6Ca495e32c6AEcfDC56d	120s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.005	6srFz6v3mSUWBmz6Fx2XUaHQGHCNFJ59z85Cp9UDCvbK	120s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xAA1252D726567293cffE6Ca495e32c6AEcfDC56d",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 120
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "6srFz6v3mSUWBmz6Fx2XUaHQGHCNFJ59z85Cp9UDCvbK",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "5000",
    "amountUsd": 0.005,
    "maxTimeoutSeconds": 120
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "answer": {
          "description": "Google's own direct answer for the query, when it has one, with the page it came from.",
          "type": [
            "object",
            "null"
          ]
        },
        "attribution": {
          "description": "Where the data comes from. Keep it with the results if you pass them on.",
          "type": "object"
        },
        "entity": {
          "description": "Knowledge-panel facts about the thing the query names, when it names one.",
          "type": [
            "object",
            "null"
          ]
        },
        "latencyMs": {
          "type": "integer"
        },
        "meta": {
          "description": "Results returned, duplicates removed, upstream credits spent.",
          "type": "object"
        },
        "paid": {
          "description": "The settled transaction and network.",
          "type": "object"
        },
        "query": {
          "type": "string"
        },
        "related": {
          "items": {
            "type": "string"
          },
          "type": "array"
        },
        "results": {
          "description": "Every search type in one shape. URLs are canonicalised (tracking parameters, AMP and www stripped) and duplicates removed.",
          "items": {
            "properties": {
              "extra": {
                "description": "Per-type fields: price and seller for shopping, address, rating and coordinates for places, publication and citedBy for scholar, duration and channel for videos, imageUrl for images.",
                "type": "object"
              },
              "position": {
                "type": "integer"
              },
              "publishedAt": {
                "description": "ISO date, normalised from whatever the source reported.",
                "type": [
                  "string",
                  "null"
                ]
              },
              "publishedLabel": {
                "description": "The date as the source reported it.",
                "type": [
                  "string",
                  "null"
                ]
              },
              "site": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "snippet": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "title": {
                "type": "string"
              },
              "url": {
                "type": [
                  "string",
                  "null"
                ]
              }
            },
            "type": "object"
          },
          "type": "array"
        },
        "type": {
          "type": "string"
        }
      },
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "answer": {},
    "attribution": {},
    "entity": {},
    "latencyMs": 0,
    "meta": {},
    "paid": {},
    "query": "string",
    "related": [
      "string"
    ],
    "results": [
      {
        "extra": {},
        "position": 0,
        "publishedAt": "string",
        "publishedLabel": "string",
        "site": "string",
        "snippet": "string",
        "title": "string",
        "url": "string"
      }
    ],
    "type": "string"
  },
  "type": "string"
}

Examples

curl

curl "https://serp402.com/api/v1/search"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://serp402.com/api/v1/search");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://serp402.com/api/v1/search")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: serp402.com
Endpoint: https://serp402.com/api/v1/search
Machine-readable: /resources/38050.json