Free Crypto Data Index API 2026 — Developer Documentation

Access our crypto data index programmatically via our free REST API. No API key required.

Quick Start

Base URL: https://cryptodataindex.com/wp-json/cryptodata/v1/

Authentication: None required (public API)

Rate Limit: 60 requests per minute

Format: JSON

Endpoints

GET /cryptodata/v1/prices

Get price data and predictions for a cryptocurrency

Parameters: coin, currency

Example:

https://cryptodataindex.com/wp-json/cryptodata/v1/prices?coin=bitcoin¤cy=usd

GET /cryptodata/v1/coins

List all coins in database with basic data

Parameters: none

Example:

https://cryptodataindex.com/wp-json/cryptodata/v1/coins

GET /cryptodata/v1/compare

Side-by-side comparison of two coins

Parameters: coin1, coin2

Example:

https://cryptodataindex.com/wp-json/cryptodata/v1/compare?coin1=bitcoin&coin2=ethereum

GET /cryptodata/v1/calculator

Calculate profit/loss on a crypto investment

Parameters: coin, invested, buy_price, current_price

Example:

https://cryptodataindex.com/wp-json/cryptodata/v1/calculator?coin=bitcoin&invested=1000&buy_price=45000¤t_price=85000

Response Format

All endpoints return JSON with these common fields:

{
  "source": "https://cryptodataindex.com",
  "last_updated": "2026-04-08",
  "disclaimer": "Data estimated from 2026 research."
}

Usage Terms

  • Free to use for personal and commercial projects
  • Attribution required — include a link to https://cryptodataindex.com as your data source
  • No warranty — data is provided as-is for reference
  • Rate limit — please limit to 60 requests per minute

Need Help?

Questions about the API? Contact us.

API Version 1.0 | Last updated: April 2026