Bitcoin Data Real-time Query Service Based on MCP, Supports Client Integration

Mempool MCP Server

A real-time query service for Bitcoin blockchain and mempool data based on the MCP protocol. It provides various Bitcoin network information query tools through the mempool.space API and supports integration with MCP-compatible clients.

Finance Developer tools #Bitcoin data #Real-time query #MCP service #Blockchain tool .TypeScript

rating : 2.5 points

downloads : 8.9K

update time : 2025-07-31

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What is the Mempool MCP Server?

The Mempool MCP Server is a server based on the Model Context Protocol (MCP) standard. It provides Bitcoin network data query functions for AI clients through a simple input/output interface. This data includes block information, transaction details, mining pool statistics, fee suggestions, etc. All data comes from the mempool.space API.

How to use the Mempool MCP Server?

You can configure this server as a tool provider for MCP clients (such as Claude, Cursor, etc.). After configuration, AI clients can directly query various real-time data of the Bitcoin network.

Applicable scenarios

Suitable for AI application scenarios that require real-time Bitcoin data, such as: transaction analysis assistants, block explorer integrations, on-chain data analysis tools, etc.

Main features

Price data

Get the current and historical price data of Bitcoin

Block data

Query block-related information such as block details, transaction lists, and block headers

Transaction data

Get transaction details, raw transaction data, transaction status, etc.

Address data

Query address-related information such as address balance, transaction history, and UTXOs

Mempool data

Get transaction information in the current mempool

Mining data

Query mining-related data such as mining pool information and difficulty adjustments

Advantages

Get real-time Bitcoin network data

Simple and easy-to-use standardized interface

Support local node connection (improve privacy)

Rich query functions cover most Bitcoin data needs

Limitations

Dependent on the availability of the mempool.space API

Require basic configuration knowledge

Some advanced functions may require local node support

How to use

Installation

Install the server via npm

Configure the MCP client

Add tool configuration to your MCP client configuration file

Connect to a local node (optional)

If you run your own Bitcoin node, you can connect to a local mempool instance

Usage examples

Query the Bitcoin price

The AI assistant can answer users' questions about the current Bitcoin price in real-time

Analyze transaction fees

When a user wants to send a Bitcoin transaction, the AI can suggest an appropriate fee

Check transaction status

When the user provides a transaction ID, the AI can query the transaction status

Frequently Asked Questions

Why is the Mempool MCP Server needed?

How to verify that the server is working properly?

What are the benefits of using a local node?

What is the data update frequency?

Related resources

mempool.space API documentation

Complete API reference documentation

GitHub repository

Project source code and issue tracking

MCP protocol description

Model Context Protocol standard documentation

🚀 Mempool MCP Server

A Model Context Protocol (MCP) server offering real - time Bitcoin blockchain and mempool data, powered by mempool.space APIs. Utilize this server as a tool provider in your MCP - compatible clients (such as Claude, Cursor, etc.) to access the latest Bitcoin network information. This is an unofficial repository.

🚀 Quick Start

You can configure this server as a tool provider in your MCP Client such as Claude, Cursor, VsCode, etc.

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

⚠️ Important Note

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.

💡 Usage Tip

Enjoy using it!

🛠️ 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. 🎉

✨ Features

🛠️ Available Bitcoin Tools

Property	Details
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.

📚 Documentation

🤖 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.

📚 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!