Blockchain.com Exchange API

Free Blockchain.com exchange API with no key: live ticker prices, 24-hour volume and last trade data for crypto trading pairs. Minimal payload. Tested.

No API key requiredHTTPSFree tier

Endpoint tested and returned HTTP 200 on 19 Aug 2026

What is the Blockchain.com Exchange API?

The Blockchain.com Exchange API provides free, key-free access to live market data — ticker prices, 24-hour price and volume, and last trade price — for cryptocurrency trading pairs on their exchange.

This is exchange market data from Blockchain.com's trading venue, available without authentication for public endpoints. The ticker response is deliberately minimal: symbol, 24-hour price and volume, and the last traded price.

Because it reflects one exchange's order book rather than an aggregated index, it is the right source when you need the actual tradeable price on that venue, and the wrong one if you want a global market average.

Quick facts

Base URL: https://api.blockchain.com/v3/exchange
Authentication: Public market data endpoints need no key. Trading endpoints require an API key.
Rate limit: No published hard limit on public market data.
Pricing: Free for public market data.
CORS: Not enabled — call it from your server
Official docs: Read the docs

How to use the Blockchain.com Exchange API

Every request below was executed against the live API on 19 Aug 2026, and the response shown is the real body it returned — not an illustration.

1. Fetch a trading pair ticker

GET https://api.blockchain.com/v3/exchange/tickers/BTC-USD

curl

curl 'https://api.blockchain.com/v3/exchange/tickers/BTC-USD'

JavaScript (fetch)

const res = await fetch("https://api.blockchain.com/v3/exchange/tickers/BTC-USD");
if (!res.ok) throw new Error(`Request failed: ${res.status}`);
const data = await res.json();
console.log(data);

Python (requests)

import requests

res = requests.get("https://api.blockchain.com/v3/exchange/tickers/BTC-USD", timeout=20)
res.raise_for_status()
print(res.json())

Response — HTTP 200

{
  "symbol": "BTC-USD",
  "price_24h": 64314.03,
  "volume_24h": 0.11085909,
  "last_trade_price": 65000.0
}

Parameters

Parameter	Type	Required	Description
`tickers/<symbol>`	path	Optional	Ticker for one pair. `tickers/BTC-USD`
`tickers`	path	Optional	All available tickers. `tickers`
`l2/<symbol>`	path	Optional	Level 2 order book for a pair. `l2/BTC-USD`
`symbols`	path	Optional	All tradeable symbols and their metadata. `symbols`

Response fields

symbolstring: Trading pair, hyphen separated, e.g. BTC-USD.
price_24hnumber: Price 24 hours ago, for computing change.
volume_24hnumber: 24-hour traded volume in the base currency.
last_trade_pricenumber: Most recent execution price.

What you can build with the Blockchain.com Exchange API

Display live prices from a specific exchange
Compute 24-hour change from price_24h and last_trade_price
Compare venue pricing against an aggregated index
Feed a lightweight price ticker with a tiny payload

Common errors and how to fix them

404

Unknown symbol.

Fix: Symbols are uppercase and hyphen separated: BTC-USD, not BTCUSD or btc-usd.

Stale last_trade_price

Thinly traded pairs may not have executed recently.

Fix: Check volume_24h before treating the last trade as a current market price.

Blockchain.com Exchange API — frequently asked questions

Does the Blockchain.com API need a key?

Not for public market data such as tickers and order books. Trading endpoints require an API key.

What symbol format does it use?

Uppercase with a hyphen, so Bitcoin against US dollars is BTC-USD. Formats like BTCUSD return a 404.

How do I calculate the 24-hour percentage change?

Compare last_trade_price against price_24h: (last - price_24h) / price_24h * 100.

Is this an aggregated price?

No, it reflects Blockchain.com's own exchange. For a market-wide average use CoinGecko or CoinLore instead.

Tools that pair with this API

JSON Formatter

Format, beautify and minify JSON online with 2-space, 4-space or tab indentation. Sort keys alphabetically and catch syntax errors instantly — free and private.

Percentage Calculator

Calculate what X% of a number is, what percent one number is of another, and percentage increase or decrease between two values — instantly and free.

Alternatives to Blockchain.com Exchange API

If Blockchain.com Exchange does not fit, these finance & crypto apis cover similar ground. Every one was called before publishing, and each links to its own reference page with a working curl command and the response it returned.

API	What it does	Auth	CORS	Last verified
CoinGecko	Free cryptocurrency price API covering 10,000+ coins. Live prices, market cap and volume in any currency, no API key on the public tier. Tested curl example.	No key	Yes	19 Aug 2026
Binance Public API	Binance public market data API needs no API key: live ticker prices, order books, klines and 24h stats for every trading pair. Tested curl example and response.	No key	Yes	19 Aug 2026
Coinbase Exchange Rates	Coinbase public exchange rates API with no key: convert any cryptocurrency to 100+ fiat currencies in a single request. Tested curl example and live JSON.	No key	Yes	19 Aug 2026
Frankfurter	Free currency exchange rate API with no key, built on European Central Bank data. Latest and historical rates, time series and conversion. Tested curl example.	No key	Yes	19 Aug 2026
Blockchair	Free Blockchair API with no key for basic use: blocks, transactions, addresses and network stats across Bitcoin, Ethereum and 15+ other blockchains. Tested.	No key	Yes	19 Aug 2026
Blockstream Esplora	Free Blockstream Esplora API with no key: Bitcoin blocks, transactions, addresses, UTXOs and mempool data. Open source and self-hostable. Tested example.	No key	Yes	20 Aug 2026

All Finance & Crypto APIs

Blockchain.com Exchange is an independent third-party service and is not affiliated with ByteTools or ByteVancer. Details on this page were verified on 19 Aug 2026; always check the official documentation before relying on this API in production, as terms and limits can change.