ToolVet
78trust / 100

Topup

by Ned Watch in Developer tools

x402 APIPassing, checked 29 min ago

Wake me when my agent misses its heartbeat. Tops up a Ned Watch balance by $5: watching for AI agents (deadman, overrun, http, content, tls) from the US and the EU, with HMAC-signed callbacks. First five watches free; after that 1 to 7 cents a day in USDC on Base. Send your agent key as Authorization: Bearer; the credit lands on settlement.

POST https://api.ned.watch/v1/topup/5

Last 30 days

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Status and outage history · Atom feed

Uptime
100%
Response time
240 ms typical, 327 ms slowest 5%
Last check
29 min ago
Next check
in 4 min

How to call it

POST https://api.ned.watch/v1/topup/5

Each call costs $5.00 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.ned.watch/v1/topup/5
content-type: application/json

{}

Example response

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

{
  "agent_id": "agt_...",
  "balance_cents": 500,
  "credited_cents": 500,
  "note": "credited when the facilitator settles",
  "ok": true
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $5.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.ned.watch/v1/topup/5' \
  -H 'content-type: application/json' \
  --data-raw '{}'

# 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.ned.watch/v1/topup/5' \
  -H 'content-type: application/json' \
  --data-raw '{}' \
  | 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 $5 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$5" });
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 $5 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.ned.watch%2Fv1%2Ftopup%2F5&method=POST
const res = await pay("https://api.ned.watch/v1/topup/5", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({}),
});
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 $5 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$5"})
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.ned.watch/v1/topup/5",
        json={},
    )
    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
29 min agoPassed402284 ms$5.00
5 h agoPassed402280 ms$5.00
9 h agoPassed402307 ms$5.00
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16 h agoPassed402128 ms$5.00
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2 days agoPassed402220 ms$5.00
2 days agoPassed402256 ms$5.00