Coin Boss API

by coinboss.com

Finance Added on November 1st, 2026 Checked and working on November 1st, 2026

What it does

Coin Boss is a free public REST API for real-time crypto derivatives market data. Developers call the documented endpoints (anonymous use needs no key) and get JSON for liquidations, open interest, funding rates, long/short ratios, volumes, options, exchange data, and ETF flows. Public documentation is in English and covers the core endpoints. Analytics for traders and developers. Not a brokerage, exchange, or gambling product. The documented endpoints are currently free to use.

API
JSON
REST

At a glance

API key: Not needed · More APIs with no key
Pricing: The documented endpoints are currently free to use.
From the browser: Yes (CORS)
Formats: JSON
Interface: REST
Provider: coinboss.com
Last checked: Working on November 1st, 2026

More information: https://www.coinboss.com/api-docs

Is this your service? Show that it is listed

Put this badge on your website or in your README; it links to this page. About the badge

HTML

<a href="https://free-web-services.com/web-services/unit-convertors/fiinance/coin-boss-api.html"><img src="https://free-web-services.com/badge.svg" width="208" height="44" alt="Listed on Free Web Services" /></a>

Markdown

[![Listed on Free Web Services](https://free-web-services.com/badge.svg)](https://free-web-services.com/web-services/unit-convertors/fiinance/coin-boss-api.html)

Example request

curl

curl 'https://api.coinboss.com/api/liquidations/overview'

JavaScript

const response = await fetch("https://api.coinboss.com/api/liquidations/overview");
const data = await response.json();
console.log(data);

Python

import requests

response = requests.get(
    "https://api.coinboss.com/api/liquidations/overview",
    timeout=30,
)
print(response.json())

The JavaScript works in a web page as well as in Node.js 18 or newer.