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 |
1---2name: mempool3description: Mempool.space REST and WebSocket API for Bitcoin (and Liquid) mempool, blocks, transactions, addresses, fees, mining, and Lightning explorer.4metadata:5 author: hairy6 version: "2026.2.24"7 source: Generated from https://github.com/mempool/mempool, scripts located at https://github.com/antfu/skills8---910> Skill is based on mempool (mempool.space) backend and frontend API surface, generated at 2026-02-24.1112Mempool 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.1314## Core References1516| Topic | Description | Reference |17|-------|-------------|-----------|18| REST API overview | Base URL, prefix `/api/v1/`, main endpoint groups | [core-rest-api](references/core-rest-api.md) |19| WebSocket | Live blocks, mempool-blocks, stats, want/track actions | [core-websocket](references/core-websocket.md) |20| Configuration | mempool-config.json, env overrides, backend behavior | [core-configuration](references/core-configuration.md) |2122## Features2324### Fees and Mempool2526| Topic | Description | Reference |27|-------|-------------|-----------|28| Fees and mempool state | Recommended/precise fees, mempool blocks, transaction times, CPFP | [features-fees-mempool](references/features-fees-mempool.md) |2930### Blocks and Transactions3132| Topic | Description | Reference |33|-------|-------------|-----------|34| Blocks and transactions | Block list/hash/txids/txs, tx status/outspends, push tx, RBF | [features-blocks-transactions](references/features-blocks-transactions.md) |3536### Addresses3738| Topic | Description | Reference |39|-------|-------------|-----------|40| Addresses and scripthash | Address stats, txs, UTXO, validation (Electrum/Esplora) | [features-addresses](references/features-addresses.md) |4142### Liquid and Lightning4344| Topic | Description | Reference |45|-------|-------------|-----------|46| Liquid | Assets, icons, supply (Liquid network) | [features-liquid](references/features-liquid.md) |47| Lightning and mining | Lightning search/nodes/channels; mining pools, hashrate, statistics | [features-lightning-mining-statistics](references/features-lightning-mining-statistics.md) |4849### Services5051| Topic | Description | Reference |52|-------|-------------|-----------|53| Acceleration and services | Accelerator API, wallet/stratum when enabled | [features-acceleration-services](references/features-acceleration-services.md) |5455## Best Practices5657| Topic | Description | Reference |58|-------|-------------|-----------|59| API usage | Network selection, init-data vs WebSocket, pagination, 503 handling | [best-practices-api-usage](references/best-practices-api-usage.md) |