Blockstream

Blockstream Fee Estimates API

The Fee Estimates API from Blockstream — 1 operation(s) for fee estimates.

GitHub OpenAPI

Documentation

📖
APIReference
https://github.com/Blockstream/esplora/blob/master/API.md

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/blockstream/refs/heads/main/openapi/blockstream-fee-estimates-api-openapi.yml

Other Resources

🔗
Sandbox
https://raw.githubusercontent.com/api-evangelist/blockstream/refs/heads/main/sandbox/blockstream-sandbox.yml

OpenAPI Specification

blockstream-fee-estimates-api-openapi.yml Raw ↑ 
openapi: 3.1.0
info:
  title: Blockstream Esplora HTTP Addresses Fee Estimates API
  version: '1.0'
  description: Esplora is Blockstream's open-source Bitcoin block explorer and its HTTP REST API. It provides read access to blocks, transactions, addresses, the mempool, fee estimates, and (on Liquid/Elements networks) issued assets. The API is public and requires no authentication. The same API backs blockstream.info and its testnet, signet, and Liquid networks. Amounts are in satoshis; hashes and txids are hex-encoded.
  x-generated: '2026-07-18'
  x-method: generated
  x-source: https://github.com/Blockstream/esplora/blob/master/API.md
  contact:
    name: Blockstream Esplora
    url: https://github.com/Blockstream/esplora
  license:
    name: MIT
    url: https://github.com/Blockstream/esplora/blob/master/LICENSE
servers:
- url: https://blockstream.info/api
  description: Bitcoin mainnet
- url: https://blockstream.info/testnet/api
  description: Bitcoin testnet
- url: https://blockstream.info/signet/api
  description: Bitcoin signet
- url: https://blockstream.info/liquid/api
  description: Liquid mainnet
- url: https://blockstream.info/liquidtestnet/api
  description: Liquid testnet
tags:
- name: Fee Estimates
paths:
  /fee-estimates:
    get:
      operationId: getFeeEstimates
      summary: Get estimated fees by confirmation target
      description: Returns a map of confirmation target (in blocks) to the estimated fee rate in sat/vB.
      tags:
      - Fee Estimates
      responses:
        '200':
          description: Map of confirmation target to fee rate