`mempool`

Pack: blockstream-info · Connect: https://pipeworx.io/mcp (see Connect below for a single-pack URL)

No MCP client? Call it directly: GET https://gateway.pipeworx.io/v1/tools/mempool for the schema, then POST the same URL with its arguments for the data.

Mempool size + fee histogram.

Parameters

Name	Type	Required	Description
`network`	string	no

Example call

Arguments

{
  "network": "mainnet"
}

curl

curl -X POST https://gateway.pipeworx.io/blockstream-info/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"mempool","arguments":{"network":"mainnet"}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('mempool', {
  "network": "mainnet"
});

Response shape

Field	Type	Description
`count`	number	Transaction count in mempool
`vsize`	number	Total virtual size
`total_fee`	number	Total fees in satoshis
`fee_histogram`	array	Fee histogram [fee_rate, vsize]

Full JSON Schema

{
  "type": "object",
  "properties": {
    "count": {
      "type": "number",
      "description": "Transaction count in mempool"
    },
    "vsize": {
      "type": "number",
      "description": "Total virtual size"
    },
    "total_fee": {
      "type": "number",
      "description": "Total fees in satoshis"
    },
    "fee_histogram": {
      "type": "array",
      "description": "Fee histogram [fee_rate, vsize]",
      "items": {
        "type": "array",
        "items": {
          "type": "number"
        }
      }
    }
  }
}

Connect

Add this to your MCP client config — every tool in the catalog, including this one — or use one-click install buttons:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://pipeworx.io/mcp"
    }
  }
}

Connect to just the blockstream-info pack

{
  "mcpServers": {
    "blockstream-info": {
      "url": "https://gateway.pipeworx.io/blockstream-info/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

mempool