ToolVet
79trust / 100

Hedera Facts Usdc Supply

by TenPrint in Markets & finance

x402 APIPassing, checked 17 min ago

Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.

GET
https://rubric-protocol.com/v1/x402/hedera-facts/usdc-supply
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
381 ms
455 ms slowest 5%
Last check
Passed
17 min ago, next in 11 min

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://rubric-protocol.com/v1/x402/hedera-facts/usdc-supply

Each call costs $0.001 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

The listing has no example input.

GET https://rubric-protocol.com/v1/x402/hedera-facts/usdc-supply

Example response

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

{
  "attestationId": "f734f3ac-0d02-4214-9aca-2961f8fffd58",
  "cacheWindowSeconds": 3600,
  "fact": "supply",
  "operator": "TenPrint",
  "paid": true,
  "settled": true,
  "success": true,
  "value": {
    "released": "4379109625135465505",
    "total": "5000000000000000000"
  },
  "verifyUrl": "https://rubric-protocol.com/v1/verify/f734f3ac-0d02-4214-9aca-2961f8fffd58",
  "vsr": {
    "hashProfile": "vsr/v0.4/sha3-256",
    "spec": "https://rubric-protocol.com/specs/vsr-v0.4.md",
    "vsrVersion": "0.4-draft"
  }
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.001.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://rubric-protocol.com/v1/x402/hedera-facts/usdc-supply'

# 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://rubric-protocol.com/v1/x402/hedera-facts/usdc-supply' \
  | 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 $0.001 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.001" });
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 $0.001 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Frubric-protocol.com%2Fv1%2Fx402%2Fhedera-facts%2Fusdc-supply
const res = await pay("https://rubric-protocol.com/v1/x402/hedera-facts/usdc-supply");
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 $0.001 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.001"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://rubric-protocol.com/v1/x402/hedera-facts/usdc-supply")
    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
17 min agoPassed402443 ms$0.001
5 h agoPassed402455 ms$0.001
10 h agoPassed402126 ms$0.001
14 h agoPassed402352 ms$0.001
19 h agoPassed402418 ms$0.001
Show 10 older checks
23 h agoPassed402354 ms$0.001
27 h agoPassed402423 ms$0.001
31 h agoPassed402381 ms$0.001
35 h agoPassed402428 ms$0.001
40 h agoPassed402383 ms$0.001
44 h agoPassed402377 ms$0.001
2 days agoPassed402383 ms$0.001
2 days agoPassed402423 ms$0.001
2 days agoPassed402404 ms$0.001
3 days agoPassed402350 ms$0.001