ToolVet
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Crypto Prices

by currency-api-production-4a8d.up.railway.app in Onchain & crypto

x402 APIPassing, checked 2 h ago

Batch current prices, market caps, and 24h changes for up to 50 cryptocurrencies by symbol or name (CoinGecko).

POST
https://currency-api-production-4a8d.up.railway.app/crypto/prices
Price
$0.001
per call in USDC
Uptime
100%
last 30 days
Response time
342 ms
390 ms 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

How to call it

POST https://currency-api-production-4a8d.up.railway.app/crypto/prices

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

From the listing.

POST https://currency-api-production-4a8d.up.railway.app/crypto/prices
content-type: application/json

{
  "coins": [
    "btc",
    "eth",
    "sol"
  ],
  "vs_currency": "usd"
}

Parameters

ParameterTypeRequiredDescription
coinsarray of stringYesUp to 50 cryptocurrency symbols or names to price in one batch, e.g. ['btc', 'eth', 'sol'].
vs_currencystringNoQuote currency code, e.g. 'usd'. Defaults to usd if omitted.

Example response

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

Example response, 33 lines
{
  "errors": [],
  "queries": [
    "btc",
    "eth",
    "sol"
  ],
  "results": [
    {
      "change_24h_pct": 1.85,
      "coin_id": "bitcoin",
      "market_cap": 1327000000000,
      "price": 67250,
      "query": "btc"
    },
    {
      "change_24h_pct": 2.1,
      "coin_id": "ethereum",
      "market_cap": 423000000000,
      "price": 3520,
      "query": "eth"
    },
    {
      "change_24h_pct": 3.4,
      "coin_id": "solana",
      "market_cap": 78000000000,
      "price": 172.4,
      "query": "sol"
    }
  ],
  "source": "CoinGecko",
  "vs_currency": "usd"
}

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 -X POST 'https://currency-api-production-4a8d.up.railway.app/crypto/prices' \
  -H 'content-type: application/json' \
  --data-raw '{"coins":["btc","eth","sol"],"vs_currency":"usd"}'

# 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://currency-api-production-4a8d.up.railway.app/crypto/prices' \
  -H 'content-type: application/json' \
  --data-raw '{"coins":["btc","eth","sol"],"vs_currency":"usd"}' \
  | 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%2Fcurrency-api-production-4a8d.up.railway.app%2Fcrypto%2Fprices&method=POST
const res = await pay("https://currency-api-production-4a8d.up.railway.app/crypto/prices", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "coins": [
      "btc",
      "eth",
      "sol"
    ],
    "vs_currency": "usd"
  }),
});
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.post(
        "https://currency-api-production-4a8d.up.railway.app/crypto/prices",
        json={
            "coins": [
                "btc",
                "eth",
                "sol",
            ],
            "vs_currency": "usd",
        },
    )
    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 agoPassed402332 ms$0.001
6 h agoPassed402747 ms$0.001
10 h agoPassed402342 ms$0.001
14 h agoPassed402366 ms$0.001
18 h agoPassed402356 ms$0.001
Show 10 older checks
22 h agoPassed402335 ms$0.001
26 h agoPassed402334 ms$0.001
30 h agoPassed402388 ms$0.001
34 h agoPassed402332 ms$0.001
37 h agoPassed402354 ms$0.001
41 h agoPassed402340 ms$0.001
45 h agoPassed402342 ms$0.001
2 days agoPassed402384 ms$0.001
2 days agoPassed402412 ms$0.001
2 days agoPassed402210 ms$0.001