API Documentation

RESTful API for Bitcoin fee predictions and network data

Getting Started

The Celere API is a RESTful API that provides Bitcoin fee predictions and network statistics. All endpoints return JSON responses.

Base URL:

https://api.celere.xyz

All API endpoints are currently free to use during the public beta. No authentication is required.

Endpoints

GET/fees/current

Get current Bitcoin fee estimates from multiple sources

Response

{
  "timestamp": "2025-10-31T12:00:00Z",
  "mempool_based": {
    "fastest": 3,
    "half_hour": 1,
    "hour": 1,
    "economy": 1,
    "minimum": 1
  },
  "bitcoin_core": {
    "blocks_2": 2.5,
    "blocks_6": 1.2,
    ...
  }
}

Try it

cURL

curl https://api.celere.xyz/fees/current

Rate Limits

During public beta, there are no rate limits. Fair use is appreciated.