mempool

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

Blocks and Transactions

Topic	Description	Reference
Blocks and transactions	Block list/hash/txids/txs, tx status/outspends, push tx, RBF	features-blocks-transactions

Addresses

Topic	Description	Reference
Addresses and scripthash	Address stats, txs, UTXO, validation (Electrum/Esplora)	features-addresses

Liquid and Lightning

Topic	Description	Reference
Liquid	Assets, icons, supply (Liquid network)	features-liquid
Lightning and mining	Lightning search/nodes/channels; mining pools, hashrate, statistics	features-lightning-mining-statistics

Services

Topic	Description	Reference
Acceleration and services	Accelerator API, wallet/stratum when enabled	features-acceleration-services

Best Practices

Topic	Description	Reference
API usage	Network selection, init-data vs WebSocket, pagination, 503 handling	best-practices-api-usage