Package Exists

Last 30 days

Uptime

7.1%

Response time

4.6 s typical, 4.6 s slowest 5%

Last check

5 min ago: Timed out

Next check

in 8 min

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://attester.dev/v1/package/exists" \
  -H "content-type: application/json" \
  -d '{"ecosystem":"pypi","name":"requests"}'

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fattester.dev%2Fv1%2Fpackage%2Fexists
const res = await pay("https://attester.dev/v1/package/exists", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"ecosystem":"pypi","name":"requests"}),
});
console.log(await res.json());

Example input

{
  "ecosystem": "pypi",
  "name": "requests"
}

Example output

{
  "exists": true,
  "latest_version": "2.32.3",
  "proof": {
    "artifact_sha256": "0x…",
    "source_url": "https://pypi.org/project/requests/"
  },
  "typosquat_adjacent": false
}

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