ToolVet
78trust / 100

Package Search

by SiteCheck in Search & web

x402 APIPassing, checked 4 h ago

Searches package names and descriptions on npm, crates.io, Packagist, RubyGems and NuGet, returning name, version, description, downloads where the registry gives them, licence, repository and last publish date. PyPI has no search API: it is checked by exact name only. Registries that fail are listed in unavailable. Limit per registry max 10.

GET
https://api.sitecheck-api.workers.dev/api/package/search
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
50 ms
50 ms slowest 5%
Last check
Passed
4 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

GET https://api.sitecheck-api.workers.dev/api/package/search

Each call costs $0.002 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.

GET https://api.sitecheck-api.workers.dev/api/package/search?ecosystems=npm%2Cpypi&limit=2&q=express

Parameters

ParameterTypeRequiredDescription
ecosystemsstringNoComma list of npm, crates, packagist, rubygems, nuget, pypi (default: all)
limitstringNoResults per registry, 1-10 (default 5)
qstringYesPackage name or keywords (1-100 characters)

Example response

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

Example response, 32 lines
{
  "checkedAt": "2026-10-15T18:21:07.766Z",
  "count": 2,
  "pypiNote": "PyPI: exact name match only (no search API)",
  "query": "express",
  "results": [
    {
      "description": "Fast, unopinionated, minimalist web framework",
      "downloads": 635513489,
      "downloadsPeriod": "last 30 days",
      "ecosystem": "npm",
      "lastPublish": "2026-10-09T12:56:54.505Z",
      "name": "express",
      "repository": "git+https://github.com/expressjs/express.git",
      "url": "https://www.npmjs.com/package/express",
      "version": "5.3.0"
    },
    {
      "description": "TypeScript definitions for express",
      "downloads": 299655572,
      "downloadsPeriod": "last 30 days",
      "ecosystem": "npm",
      "lastPublish": "2025-12-01T20:35:51.488Z",
      "name": "@types/express",
      "repository": "https://github.com/DefinitelyTyped/DefinitelyTyped.git",
      "url": "https://www.npmjs.com/package/@types/express",
      "version": "5.0.6"
    }
  ],
  "source": "npm registry, crates.io API, Packagist, RubyGems.org, NuGet search, PyPI JSON (each registry's own terms and licences)",
  "unavailable": []
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.sitecheck-api.workers.dev/api/package/search?ecosystems=npm%2Cpypi&limit=2&q=express'

# 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 - 'https://api.sitecheck-api.workers.dev/api/package/search?ecosystems=npm%2Cpypi&limit=2&q=express' \
  | 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.sitecheck-api.workers.dev%2Fapi%2Fpackage%2Fsearch
const res = await pay("https://api.sitecheck-api.workers.dev/api/package/search?ecosystems=npm%2Cpypi&limit=2&q=express");
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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.sitecheck-api.workers.dev/api/package/search?ecosystems=npm%2Cpypi&limit=2&q=express")
    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
4 h agoPassed40250 ms$0.002