ToolVet
77trust / 100

Proof Verify

by ManyLives Agent Utilities in Security & trust

x402 APIPassing, checked 1 h ago

Proof that a hash was stamped: when we received it, the Merkle path from its leaf to the root, and the Base network transaction that recorded the root, with step-by-step instructions to check it yourself without trusting us.

GET
https://api.manylives.me/paid/proof/verify
Price
$0.002
per call in USDC
Uptime
100%
last 30 days
Response time
406 ms
712 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

How to call it

GET https://api.manylives.me/paid/proof/verify

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.manylives.me/paid/proof/verify?hash=9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08

Parameters

ParameterTypeRequiredDescription
hashstringYesthe SHA-256 hex you stamped (required)

Example response

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

{
  "hash": "9f86…0a08",
  "how_to_check": [
    "…"
  ],
  "stamps": [
    {
      "batch": "2026-10-09T12",
      "block_time": "2026-10-09T13:05:12Z",
      "leaf": "…",
      "leaf_is": "sha256(hash + '|' + stamp_id)",
      "proof": [
        {
          "sibling": "…",
          "side": "right"
        }
      ],
      "received_at": "2026-10-09T12:00:00Z",
      "root": "…",
      "stamp_id": "stp_k3m8q2r7t9w4y6z2",
      "status": "on_chain",
      "tx": "0x…"
    }
  ]
}

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.manylives.me/paid/proof/verify?hash=9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08'

# 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.manylives.me/paid/proof/verify?hash=9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08' \
  | 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.manylives.me%2Fpaid%2Fproof%2Fverify
const res = await pay("https://api.manylives.me/paid/proof/verify?hash=9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08");
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.manylives.me/paid/proof/verify?hash=9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08")
    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 agoPassed402407 ms$0.002
6 h agoPassed402434 ms$0.002
10 h agoPassed402410 ms$0.002
14 h agoPassed402406 ms$0.002
18 h agoPassed402505 ms$0.002
Show 10 older checks
22 h agoPassed402395 ms$0.002
26 h agoPassed402518 ms$0.002
30 h agoPassed402401 ms$0.002
34 h agoPassed402361 ms$0.002
38 h agoPassed402396 ms$0.002
42 h agoPassed402398 ms$0.002
46 h agoPassed402576 ms$0.002
2 days agoPassed4021.2 s$0.002
2 days agoPassed402412 ms$0.002
2 days agoPassed402578 ms$0.002