Skill is based on mempool (mempool.space) backend and frontend API surface, generated at 2026-02-24.

Mempool is the open-source mempool visualizer, block explorer, and API service behind mempool.space. It provides REST and WebSocket APIs for fees, blocks, transactions, addresses (with Electrum/Esplora), mining pools and hashrate, optional Lightning explorer, and Liquid assets. Use this skill when building agents or tools that query or stream Bitcoin/Liquid chain and mempool data.

Core References

Topic	Description	Reference
REST API overview	Base URL, prefix `/api/v1/`, main endpoint groups	core-rest-api
WebSocket	Live blocks, mempool-blocks, stats, want/track actions	core-websocket
Configuration	mempool-config.json, env overrides, backend behavior	core-configuration

Features

Fees and Mempool

Topic	Description	Reference
Fees and mempool state	Recommended/precise fees, mempool blocks, transaction times, CPFP	features-fees-mempool