ToolVet
77trust / 100

Serper Shopping

by api.munition.io in Other

x402 APIPassing, checked 1 h ago

Munition Google Shopping: x402-paid Google Shopping results for AI agents via Serper. Pay 0.004 USDC per query for products with price, seller, rating and link — useful for price comparison and product research.

POST
https://api.munition.io/v1/serper/shopping
Price
$0.004
per call in USDC
Uptime
100%
last 30 days
Response time
455 ms
707 ms slowest 5%
Last check
Passed
1 h ago, next any minute now

Run a free test callHow to call it

Reliability

All checks passedSome failedAll failedNot checked

Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://api.munition.io/v1/serper/shopping

Each call costs $0.004 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.munition.io/v1/serper/shopping
content-type: application/json

{
  "gl": "us",
  "hl": "en",
  "num": 10,
  "q": "Sony WH-1000XM6"
}

Parameters

ParameterTypeRequiredDescription
glstringNoCountry code (gl), e.g. us, fr, de. Default: "us".
hlstringNoInterface language (hl), e.g. en, fr. Default: "en".
numintegerNo Default: 10.
pageintegerNo Default: 1.
qstringYesGoogle query.
tbsstringNoTime filter, e.g. qdr:d, qdr:w, qdr:m, qdr:y.

Example response

The provider's example. We can't check it without paying.

{
  "meta": {
    "resultCount": 1,
    "searchedAt": "2026-09-09T00:00:00.000Z"
  },
  "query": "Sony WH-1000XM6",
  "shopping": [
    {
      "position": 1,
      "price": "$449.99",
      "rating": 4.7,
      "ratingCount": 1200,
      "source": "Best Buy",
      "title": "Sony WH-1000XM6 Wireless Headphones"
    }
  ]
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.004.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.munition.io/v1/serper/shopping' \
  -H 'content-type: application/json' \
  --data-raw '{"gl":"us","hl":"en","num":10,"q":"Sony WH-1000XM6"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://api.munition.io/v1/serper/shopping' \
  -H 'content-type: application/json' \
  --data-raw '{"gl":"us","hl":"en","num":10,"q":"Sony WH-1000XM6"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.004 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.004" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.004 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.munition.io%2Fv1%2Fserper%2Fshopping&method=POST
const res = await pay("https://api.munition.io/v1/serper/shopping", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "gl": "us",
    "hl": "en",
    "num": 10,
    "q": "Sony WH-1000XM6"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.004 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.004"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.munition.io/v1/serper/shopping",
        json={
            "gl": "us",
            "hl": "en",
            "num": 10,
            "q": "Sony WH-1000XM6",
        },
    )
    print(res.status_code, res.text)

Security scan

No findings

We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
1 h agoPassed402424 ms$0.004
6 h agoPassed402485 ms$0.004
11 h agoPassed402455 ms$0.004
16 h agoPassed402547 ms$0.004
20 h agoPassed402590 ms$0.004
Show 10 older checks
25 h agoPassed402423 ms$0.004
29 h agoPassed402452 ms$0.004
34 h agoPassed402391 ms$0.004
38 h agoPassed402496 ms$0.004
42 h agoPassed402378 ms$0.004
46 h agoPassed402499 ms$0.004
2 days agoPassed402682 ms$0.004
2 days agoPassed402507 ms$0.004
2 days agoPassed402484 ms$0.004
3 days agoPassed402369 ms$0.004