ToolVet
77trust / 100

Token Price At

by twin.unykorn.org in Onchain & crypto

x402 APIPassing, checked 2 h ago

USD price of a token at a past moment — Genesis402 / UnyKorn Operator Network

POST
https://twin.unykorn.org/token-price-at
Price
$0.005
per call in USDC
Uptime
100%
last 30 days
Response time
394 ms
1.0 s slowest 5%
Last check
Passed
2 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

POST https://twin.unykorn.org/token-price-at

Each call costs $0.005 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://twin.unykorn.org/token-price-at
content-type: application/json

{
  "params": {
    "chain": "base",
    "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "timestamp": 0
  }
}

Parameters

ParameterTypeRequiredDescription
paramsobjectYes

Example response

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

{
  "generated_at": "<iso8601>",
  "ok": true,
  "receipt": {
    "amount_usd": 0.005,
    "receipt_id": "g402-<16hex>",
    "tx_hash": "0x<64hex>"
  },
  "type": "token-price-at"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.005.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://twin.unykorn.org/token-price-at' \
  -H 'content-type: application/json' \
  --data-raw '{"params":{"chain":"base","contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","timestamp":0}}'

# 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://twin.unykorn.org/token-price-at' \
  -H 'content-type: application/json' \
  --data-raw '{"params":{"chain":"base","contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","timestamp":0}}' \
  | 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 $0.005 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.005" });
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 $0.005 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftwin.unykorn.org%2Ftoken-price-at&method=POST
const res = await pay("https://twin.unykorn.org/token-price-at", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "params": {
      "chain": "base",
      "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "timestamp": 0
    }
  }),
});
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 $0.005 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.005"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://twin.unykorn.org/token-price-at",
        json={
            "params": {
                "chain": "base",
                "contract": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
                "timestamp": 0,
            },
        },
    )
    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
2 h agoPassed402174 ms$0.005
7 h agoPassed402442 ms$0.005
12 h agoPassed402184 ms$0.005
16 h agoPassed402434 ms$0.005
21 h agoPassed402133 ms$0.005
Show 10 older checks
25 h agoPassed402180 ms$0.005
29 h agoPassed402461 ms$0.005
33 h agoPassed402446 ms$0.005
37 h agoPassed402159 ms$0.005
42 h agoPassed402425 ms$0.005
46 h agoPassed402130 ms$0.005
2 days agoPassed402718 ms$0.005
2 days agoPassed402506 ms$0.005
2 days agoPassed4021.1 s$0.005
3 days agoPassed402274 ms$0.005