ToolVet
80trust / 100

Dev Npm Info

by AgentsToolsHub in Developer tools

x402 APIPassing, checked 3 h ago

Look up any package on the public npm registry: latest version, description, license, homepage, and publish dates for the first and most recent release. Agents use this to check dependencies before installing or to detect newly published versions. Use this when an agent needs to latest version, dates and metadata from the npm registry.

GET
https://agentstoolshub.com/api/v1/dev/npm-info
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
153 ms
689 ms slowest 5%
Last check
Passed
3 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://agentstoolshub.com/api/v1/dev/npm-info

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://agentstoolshub.com/api/v1/dev/npm-info?package=express

Parameters

ParameterTypeRequiredDescription
packagestringYesPackage name

Example response

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

{
  "result": {
    "answer": "live data — call the API",
    "value": null
  },
  "tool": "npm-info"
}

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://agentstoolshub.com/api/v1/dev/npm-info?package=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://agentstoolshub.com/api/v1/dev/npm-info?package=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%2Fagentstoolshub.com%2Fapi%2Fv1%2Fdev%2Fnpm-info
const res = await pay("https://agentstoolshub.com/api/v1/dev/npm-info?package=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://agentstoolshub.com/api/v1/dev/npm-info?package=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
3 h agoPassed402153 ms$0.002
6 h agoPassed402149 ms$0.002
9 h agoPassed402149 ms$0.002
12 h agoPassed402185 ms$0.002
16 h agoPassed402181 ms$0.002
Show 7 older checks
21 h agoPassed402164 ms$0.002
26 h agoPassed402146 ms$0.002
31 h agoPassed402160 ms$0.002
37 h agoPassed402144 ms$0.002
42 h agoPassed402180 ms$0.002
47 h agoPassed402689 ms$0.002
2 days agoPassed402146 ms$0.002