Which integrations are available for this server?

Provides real-time Bitcoin blockchain and mempool data through the mempool.space APIs, offering tools for accessing network statistics, price information, transaction details, block data, mining pools information, and address tracking. Supports retrieving Bitcoin price data in various fiat currencies through the get-price tool. Enables connecting to a local Bitcoin node running on Umbrel for privacy and unlimited API calls by configuring the MEMPOOL_BASE_URL environment variable.

How do I use Mempool MCP Server?

1. Click on "Deploy Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Mempool MCP Server what's the current Bitcoin price in USD?" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

Mempool MCP Server

by alexandresanlim

Overview Schema Source Related Servers Discussions Admin

TypeScript

Hybrid

🚀 Mempool MCP Server

A Model Context Protocol (MCP) server providing real-time Bitcoin blockchain and mempool data, powered by mempool.space APIs. Use this server as a tool provider in your MCP-compatible clients (like Claude, Cursor, and others) to access up-to-date Bitcoin network information. Its an unofficial repository.

🛠️ Available Bitcoin Tools

Tool Name	Description
get-difficulty-adjustment	Get current and next Bitcoin difficulty adjustment info.
get-price	Get the current BTC price in various fiat currencies.
get-historical-price	Get the BTC price for a specific date (YYYY-MM-DD).
get-recommended-fees	Get recommended Bitcoin transaction fees.
get-stats-info	Get general Bitcoin network statistics.
get-mining-pools	Get mining pools info.
get-mining-pool	Get info for a specific mining pool.
get-mining-blocks-fees-24h	Get mining blocks fees for the last 24h.
get-mempool-info	Get mempool info.
get-mempool-txids	Get mempool txids.
get-mempool-recent	Get recent mempool transactions.
get-blocks	Get the latest blocks.
get-block	Get details about a block from its hash.
get-block-txids	Get txids for a block.
get-block-txs	Get transactions for a block.
get-block-status	Get block status.
get-block-raw	Get raw block hex.
get-block-txid-by-index	Get block txid by index.
get-block-header	Get the block header in hex.
get-address-info	Get details about an address.
get-address-txs	Get transactions for an address.
get-address-txs-chain	Get chain transactions for an address.
get-address-txs-mempool	Get mempool transactions for an address.
get-address-utxo	Get UTXOs for an address.
get-tx-info	Get details about a transaction.
get-tx-status	Get transaction status.
get-tx-raw	Get raw transaction hex.
get-tx-merkleblock-proof	Get transaction merkleblock proof.
get-tx-outspend	Get outspend info for a transaction output.
get-tx-outspends	Get outspends for all outputs of a transaction.

Related MCP server: Satstream MCP Server

🤖 What is MCP?

Model Context Protocol (MCP) is a standard for tool providers to communicate with AI clients via standard input/output. This server lets you plug Bitcoin data tools into any MCP-compatible client.

⚡ Quick Start: Use in Your MCP Client

You can configure this server as a tool provider in your MCP Client such Claude, Cursor, VsCode and others:

"mempool-mcp-server": {
  "command": "npx",
  "args": [
    "@sanlim/mempool-mcp-server"
  ]
},

TIP

To connect locally for privacy and unlimited calls, you can pass the base mempool API URL as an environment config from your local Bitcoin node such as Umbrel, MyNode, etc. See below:

"mempool-mcp-server-local": {
 "command": "npx",
 "args": [
   "@sanlim/mempool-mcp-server"
 ],
 "env": {
   "MEMPOOL_BASE_URL": "http://umbrel.local:3006/api"
 }
},

Check this working with "mempool url" text on your MCP Client.

Enjoy!

🛠️ Using a Local Build

Clone this repository:

git clone https://github.com/alexandresanlim/mempool-mcp-server.git

Install and build:

npm install
npm run build
npm run server

Configure your MCP client:

"mempool-mcp-server-debug": {
  "command": "node",
  "args": [
    "...replace_to_path_of_project/mempool-mcp-server/build/main.js"
  ]
},

The server will start and listen for MCP requests via standard input/output. 🎉

📚 Reference & Troubleshooting

Full API reference: mempool.space API docs
If you have issues, make sure your build is up to date and your MCP client is configured to use stdio.
For questions or contributions, feel free to open an issue or pull request!

Made with ❤️ by a bitcoiner. Enjoy!

Available Tools

31 tools

get-address-infoC

Returns details about an address

Inputs: address (required).

get-address-txsC

Returns transactions for an address

Inputs: address (required).

get-address-txs-chainC

Returns chain transactions for an address

Inputs: address (required).

get-address-txs-mempoolC

Returns mempool transactions for an address

Inputs: address (required).

get-address-utxoC

Returns UTXOs for an address

Inputs: address (required).

get-base-urlB

Returns mempool.space base url api

Inputs: no named parameters.

get-blockA

Returns details about a block from hash

Inputs: hash (required).

get-block-headerC

Returns the block header in hex

Inputs: hash (required).

get-block-rawC

Returns raw hex for a block

Inputs: hash (required).

get-blocksC

Returns the latest blocks

Inputs: no named parameters.

get-block-statusC

Returns status for a block

Inputs: hash (required).

get-block-txid-by-indexC

Returns txid for a block at a specific index

Inputs: hash (required), index (required).

get-block-txidsC

Returns txids for a block

Inputs: hash (required).

get-block-txsC

Returns transactions for a block

Inputs: hash (required).

get-difficulty-adjustmentB

Returns current and next Bitcoin difficulty adjustment info

Inputs: no named parameters.

get-historical-priceC

Returns the BTC price for a specific date (YYYY-MM-DD)

Inputs: date (required).

get-mempool-infoC

Returns mempool info

Inputs: no named parameters.

get-mempool-recentB

Returns recent mempool transactions

Inputs: no named parameters.

get-mempool-txidsC

Returns mempool txids

Inputs: no named parameters.

get-mining-blocks-fees-24hB

Returns mining blocks fees for the last 24h

Inputs: no named parameters.

get-mining-poolC

Returns info for a specific mining pool

Inputs: poolId (required).

get-mining-poolsB

Returns mining pools info

Inputs: no named parameters.

get-priceB

Returns the current BTC price in various fiat currencies

Inputs: no named parameters.

get-recommended-feesB

Get recommended fees for Bitcoin

Inputs: no named parameters.

get-stats-infoD

Returns stats info

Inputs: no named parameters.

get-tx-infoC

Returns details about a transaction

Inputs: txid (required).

get-tx-merkleblock-proofC

Returns the merkleblock proof for a transaction

Inputs: txid (required).

get-tx-outspendC

Returns outspend info for a transaction output

Inputs: txid (required), vout (required).

get-tx-outspendsC

Returns outspends info for all outputs of a transaction

Inputs: txid (required).

get-tx-rawC

Returns raw hex for a transaction

Inputs: txid (required).

get-tx-statusC

Returns status for a transaction

Inputs: txid (required).

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

Loading tool schema changelog…

Deploy Server

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

TDQS

B3/5.0

Scored 2026-04-18 09:15 across 31 tools

Disambiguation4/5

Most tools have distinct purposes targeting specific resources like addresses, blocks, transactions, or mempool data, with clear naming to differentiate them. However, some tools like get-address-txs, get-address-txs-chain, and get-address-txs-mempool have overlapping scopes that could cause confusion in selection, though descriptions help clarify the differences.

Naming Consistency5/5

All tools follow a consistent verb_noun pattern with hyphens (e.g., get-address-info, get-block-txids), using 'get' as the primary verb throughout. This uniformity makes the tool set predictable and easy to navigate, with no deviations in naming conventions.

Tool Count2/5

With 31 tools, the count feels excessive for a mempool server, leading to potential bloat and complexity. While the domain is broad, many tools could be consolidated (e.g., multiple address transaction queries), making the set heavy and less scoped than ideal for efficient agent use.

Completeness5/5

The tool set provides comprehensive coverage for Bitcoin blockchain and mempool operations, including CRUD-like actions for addresses, blocks, transactions, and fees. There are no obvious gaps; it supports full lifecycle queries from raw data to status checks, ensuring agents can handle typical workflows without dead ends.

Maintenance

ActivityInactive

ResponsivenessOutdated data

Resources

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Appeared in Searches

How to check Bitcoin (BTC) balance

🚀 Mempool MCP Server

🛠️ Available Bitcoin Tools

🤖 What is MCP?

⚡ Quick Start: Use in Your MCP Client

🛠️ Using a Local Build

📚 Reference & Troubleshooting

Available Tools

Tool Schema Changelog

TDQS

Maintenance

Resources

Related MCP Connectors

Related MCP Servers

MCP Blockchain Query Server

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Appeared in Searches