ToolVet
74trust / 100

Feed Ohlcv

by BTC & ETH daily OHLCV feed in Markets & finance

x402 APIPassing, checked 4 h ago

Daily OHLCV candles (open, high, low, close, volume) for BTC/USD and ETH/USD, 1000 days of history (about 2.7 years) refreshed once a day. Source: Binance public market data. No API key needed from the buyer beyond the x402 payment. GET /feed/ohlcv returns the candles; GET /feed/resumen returns last close plus 24h/7d/30d change and 30-day high and low. Built for trading agents that need a clean historical series without running their own data pipeline. Daily interval only. Not financial advice.

GET
https://fachada.chelsea-hermes.workers.dev/feed/ohlcv
Price
$0.5
per call in USDC
Uptime
97.1%
last 30 days
Response time
619 ms
810 ms slowest 5%
Last check
Passed
4 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

GET https://fachada.chelsea-hermes.workers.dev/feed/ohlcv

Each call costs $0.5 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://fachada.chelsea-hermes.workers.dev/feed/ohlcv?limit=how+many+daily+candles+to+return%2C+default+365%2C+maximum+1000&symbol=BTC+or+ETH+%28also+accepts+BTC%2FUSD%2C+ETH%2FUSD%29

Example response

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

{
  "candles": [
    {
      "c": 84397.6,
      "h": 87278.54,
      "l": 83500.01,
      "o": 86208.57,
      "t": "2026-09-23",
      "v": 22150.93
    },
    {
      "c": 84074.53,
      "h": 84942.45,
      "l": 82874.93,
      "o": 84397.6,
      "t": "2026-09-24",
      "v": 18339.54
    }
  ],
  "count": 2,
  "interval": "1d",
  "symbol": "BTC"
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.5.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://fachada.chelsea-hermes.workers.dev/feed/ohlcv?limit=how+many+daily+candles+to+return%2C+default+365%2C+maximum+1000&symbol=BTC+or+ETH+%28also+accepts+BTC%2FUSD%2C+ETH%2FUSD%29'

# 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://fachada.chelsea-hermes.workers.dev/feed/ohlcv?limit=how+many+daily+candles+to+return%2C+default+365%2C+maximum+1000&symbol=BTC+or+ETH+%28also+accepts+BTC%2FUSD%2C+ETH%2FUSD%29' \
  | 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 $0.5 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.5" });
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 $0.5 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ffachada.chelsea-hermes.workers.dev%2Ffeed%2Fohlcv
const res = await pay("https://fachada.chelsea-hermes.workers.dev/feed/ohlcv?limit=how+many+daily+candles+to+return%2C+default+365%2C+maximum+1000&symbol=BTC+or+ETH+%28also+accepts+BTC%2FUSD%2C+ETH%2FUSD%29");
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 $0.5 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.5"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://fachada.chelsea-hermes.workers.dev/feed/ohlcv?limit=how+many+daily+candles+to+return%2C+default+365%2C+maximum+1000&symbol=BTC+or+ETH+%28also+accepts+BTC%2FUSD%2C+ETH%2FUSD%29")
    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
4 h agoPassed402630 ms$0.5
9 h agoPassed402564 ms$0.5
13 h agoPassed402676 ms$0.5
18 h agoPassed402713 ms$0.5
23 h agoPassed402669 ms$0.5
Show 10 older checks
27 h agoExpected HTTP 402, got 404404248 ms-
32 h agoPassed402555 ms$0.5
36 h agoPassed402810 ms$0.5
41 h agoPassed402755 ms$0.5
45 h agoPassed402771 ms$0.5
2 days agoPassed402642 ms$0.5
2 days agoPassed402559 ms$0.5
2 days agoPassed402748 ms$0.5
3 days agoPassed402652 ms$0.5
3 days agoPassed402638 ms$0.5