# Blockstream Esplora HTTP API

> Blockstream's open-source Bitcoin block explorer (blockstream.info) and its public
> HTTP REST API. Read blocks, transactions, addresses, the mempool, and fee
> estimates across Bitcoin mainnet, testnet, and signet, plus Liquid/Elements
> assets. No authentication required. Amounts are in satoshis; hashes are hex.

## API
- [Esplora HTTP API reference](https://github.com/Blockstream/esplora/blob/master/API.md): every REST endpoint, verbatim from the project.
- Base URLs: https://blockstream.info/api (mainnet), /testnet/api, /signet/api, /liquid/api, /liquidtestnet/api

## Specs
- [OpenAPI](openapi/blockstream-esplora-openapi.yml): generated from the published API reference.
- [Overlay](overlays/blockstream-esplora-overlay.yaml): API Evangelist enhancements.

## Artifacts
- [Authentication](authentication/blockstream-authentication.yml): none — public API.
- [Conventions](conventions/blockstream-conventions.yml): pagination, error style, amounts, versioning.
- [Errors](errors/blockstream-problem-types.yml): plain-text error catalog.
- [Data model](data-model/blockstream-data-model.yml): block/tx/address/utxo/asset graph.
- [Sandbox](sandbox/blockstream-sandbox.yml): testnet/signet base URLs.
- [MCP tools (candidate)](mcp/blockstream-mcp.yml): agent tool set derived from the OpenAPI.
- [Agent skill](skills/blockstream-check-address.md): check an address balance and history.
- [Packages / SDKs](packages/blockstream-packages.yml): GDK and community clients.

## Company
- [Blockstream](https://blockstream.com): Bitcoin infrastructure — Liquid Network, Green wallet, Blockstream Satellite, mining.
- [GitHub](https://github.com/Blockstream): open-source repositories including Esplora and GDK.