# Blockstream Info [Health: Active]

**Category:** 💰 Finance & Fintech  
**Repository:** https://github.com/pipeworx-io/mcp-blockstream-info  
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**Directory Page:** https://allmcps.com/mcp/blockstream-info

## Description
Blockstream Esplora Bitcoin block explorer (mainnet + testnet)

## Claude Desktop Quick Installation
Install path detected from listing signals. Uses `npx` (confidence: high):

```json
"mcpServers": {
  "blockstream-info": {
    "command": "npx",
    "args": ["-y","@pipeworx/mcp-blockstream-info"]
  }
}
```

## Documentation

## What the Blockstream Info MCP server does

The Blockstream Info MCP server exposes selected Bitcoin block explorer operations through the Model Context Protocol. Its data source is Blockstream’s Esplora REST API, using the mainnet endpoint at `https://blockstream.info/api/` and the testnet endpoint at `https://blockstream.info/testnet/api/`. Mainnet is used when no network is provided.

Available operations include retrieving the current chain tip height, looking up a block by hash or height, and fetching transaction details by transaction ID. Other tools report a transaction’s confirmation status, summarize an address’s confirmed and mempool activity, list recent transactions for an address, inspect mempool size and fee distribution, and return recommended satoshis-per-vbyte fee levels by confirmation target.

The service is keyless. It is suited to agents that need read-only Bitcoin network information rather than wallet signing, transaction broadcasting, or general blockchain support.

## How it works

The hosted option is exposed through Pipeworx gateway URLs. A scoped MCP endpoint is available at `https://gateway.pipeworx.io/blockstream-info/mcp`, while `https://gateway.pipeworx.io/mcp` provides the full gateway. The scoped endpoint lists the Blockstream Info tools together with shared Pipeworx tools, so its tool list is larger than the pack-specific operations. The gateway’s `ask_pipeworx` tool can route natural-language questions across the catalog, including this data source.

The same hosted gateway also provides HTTP tool calls. For example, a client can send a POST request to `/v1/tools/tip_height` with a JSON network argument. Tool details can be inspected with a GET request to the corresponding tool path.

For a narrower connection, the npm package runs locally over stdio. In that mode, MCP initialization, tool listing, and tool calls cover only the Blockstream Info operations; the shared gateway meta-tools are not included. The local process calls the same underlying data source without a gateway round trip.

## Setup and configuration

Add the hosted MCP URL to a compatible client such as Claude Desktop, Cursor, or Windsurf. Alternatively, configure the local package with the command `npx -y @pipeworx/mcp-blockstream-info`. Running that command directly can confirm that the process starts and communicates over stdin and stdout.

No environment variables or API keys are specified. Pass `network: "testnet"` to an individual tool when testnet data is required; omit it or use `mainnet` for Bitcoin mainnet. The gateway and local package are separate deployment choices, not separate data implementations.

## Tools and capabilities

The Blockstream Info MCP server provides these pack-specific tools:

- `tip_height` returns the current block height.
- `block` looks up a block using its hash or height.
- `transaction` returns transaction details for a transaction ID.
- `tx_status` reports confirmation status.
- `address` returns chain and mempool statistics for an address.
- `address_txs` lists recent transactions associated with an address.
- `mempool` reports mempool size and a fee histogram.
- `fee_estimates` returns recommended sat/vB values for confirmation targets.

Each tool accepts the optional `network` parameter where supported by the pack interface, with testnet selected by setting it to `testnet`.

## Limitations and notes

This listing documents Bitcoin mainnet and testnet access through Esplora. It does not describe wallet controls, private-key handling, transaction submission, or support for other networks. Hosted pack connections include shared Pipeworx meta-tools in addition to the pack tools, which increases the reported tool count. Use the local stdio package when only the eight listed operations are needed without those gateway additions.

The package is released under the MIT license. The authoritative set of tools for a hosted connection can change with the gateway and is stated by that connection’s initialization response; the local package exposes the pack-specific set described above.

_Full upstream README: https://allmcps.com/mcp/blockstream-info/readme_