ToolVet
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Token Price

by Blackwood State Token Price in Onchain & crypto

x402 APIPassing, checked 5 h ago

Use when you need a crypto token price or market data for a Base token, quoted from on-chain liquidity. Do not use for tokens that only trade off Base or on other DEXs (Aerodrome is not read), price history or OHLC. Returns JSON with the USD price of a token on Base computed on-chain from its deepest Uniswap v3 pool against USDC or WETH, with pool, fee tier and depth for 0.003 USDC per call. Typical response time 1200 ms (p95). Category: Trading.

POST
https://x402-gateway.blackwoodstate8.workers.dev/v1/token-price
Price
$0.003
per call in USDC
Uptime
100%
last 30 days
Response time
1.1 s
1.4 s slowest 5%
Last check
Passed
5 h ago, next any minute now

Run a free test callHow to call it

Reliability

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Status and outage history · Atom feed · Watch with other listings

How to call it

POST https://x402-gateway.blackwoodstate8.workers.dev/v1/token-price

Each call costs $0.003 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://x402-gateway.blackwoodstate8.workers.dev/v1/token-price
content-type: application/json

{
  "token": "WETH"
}

Parameters

ParameterTypeRequiredDescription
tokenstringYesToken on Base: contract address (0x...) or a symbol like WETH, cbBTC, AERO, DEGEN, VIRTUAL

Example response

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

{
  "blockNumber": 52713897,
  "decimals": 18,
  "depthUsd": 56610101,
  "feeTier": 3000,
  "pool": "0x6c561B446416E1A00E8E93E221854d6eA4171372",
  "priceUsd": 2421.2474,
  "quote": "USDC",
  "source": "Uniswap v3 on Base (on-chain)",
  "symbol": "WETH",
  "token": "0x4200000000000000000000000000000000000006"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.003.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://x402-gateway.blackwoodstate8.workers.dev/v1/token-price' \
  -H 'content-type: application/json' \
  --data-raw '{"token":"WETH"}'

# 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://x402-gateway.blackwoodstate8.workers.dev/v1/token-price' \
  -H 'content-type: application/json' \
  --data-raw '{"token":"WETH"}' \
  | 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 $0.003 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.003" });
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 $0.003 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fx402-gateway.blackwoodstate8.workers.dev%2Fv1%2Ftoken-price&method=POST
const res = await pay("https://x402-gateway.blackwoodstate8.workers.dev/v1/token-price", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "token": "WETH"
  }),
});
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 $0.003 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.003"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://x402-gateway.blackwoodstate8.workers.dev/v1/token-price",
        json={
            "token": "WETH",
        },
    )
    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
5 h agoPassed402767 ms$0.003
11 h agoPassed4021.1 s$0.003
16 h agoPassed4021.4 s$0.003