Lotw MCP

ARRL Logbook of The World MCP server. QSO query, QSL status, DXCC credit tracking.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "lotw-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "lotw-mcp"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

lotw-mcp

MCP server for ARRL Logbook of The World (LoTW) — query confirmations, uploaded QSOs, DXCC credits, and user activity through any MCP-compatible AI assistant.

Part of the qso-graph project. Read-only — uploads require TQSL digital signatures and are out of scope.

Install

Terminal

pip install lotw-mcp

Tools

Tool	Auth	Description
`lotw_confirmations`	Yes	Query confirmed QSLs with band/mode/call/date filters
`lotw_qsos`	Yes	Query all uploaded QSOs (confirmed and unconfirmed)
`lotw_dxcc_credits`	Yes	DXCC award credits from LoTW confirmations
`lotw_download`	Yes	Download QSOs as ADIF file
`lotw_user_activity`	No	Check if a callsign uses LoTW and when they last uploaded
`get_version_info`	No	Service version + upstream LoTW schema version (fleet identity attestation)

Quick Start

1. Set up credentials

lotw-mcp uses qso-graph-auth personas for credential management:

Terminal

pip install qso-graph-auth

qso-auth persona create ki7mt --callsign KI7MT
qso-auth persona provider ki7mt lotw --username KI7MT
qso-auth persona secret ki7mt lotw

Note: The LoTW login is usually your callsign but not always. Pre-Sept 2019 accounts may require lowercase passwords. Avoid special characters in passwords.

2. Configure your MCP client

Claude Desktop

Add to claude_desktop_config.json (~/Library/Application Support/Claude/ on macOS, %APPDATA%\Claude\ on Windows):

config.json

{
  "mcpServers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

Claude Code

Add to .claude/settings.json:

config.json

{
  "mcpServers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

ChatGPT Desktop

config.json

{
  "mcpServers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

Cursor

Add to .cursor/mcp.json (project-level) or ~/.cursor/mcp.json (global):

config.json

{
  "mcpServers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

VS Code / GitHub Copilot

Add to .vscode/mcp.json in your workspace:

config.json

{
  "servers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

Gemini CLI

Add to ~/.gemini/settings.json (global) or .gemini/settings.json (project):

config.json

{
  "mcpServers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

3. Ask questions

"How many LoTW confirmations did I get this month?"

"Show me all unconfirmed 20m FT8 QSOs uploaded to LoTW in the last 90 days"

"What DXCC credits do I have on 40m CW?"

"Does JA1ABC use LoTW? When did they last upload?"

Public Tool

lotw_user_activity works without any credentials. It uses the public LoTW user activity CSV, cached locally for 7 days.

Testing Without Credentials

Set the mock environment variable:

bash

LOTW_MCP_MOCK=1 lotw-mcp

Performance Notes

LoTW can be slow (30-60s for large queries). lotw-mcp uses 120s timeouts. Use date filters (since, start_date) to limit result sets.

MCP Inspector

bash

lotw-mcp --transport streamable-http --port 8004

Development

bash

git clone https://github.com/qso-graph/lotw-mcp.git
cd lotw-mcp
pip install -e .

License

GPL-3.0-or-later

Read the full README →View source on GitHub →

Related MCP Servers

View all in Developer Tools View all alternatives

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about Lotw MCP

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "lotw-mcp": { "command": "npx", "args": ["-y", "lotw-mcp"] } }

AllMCPs Directory Badge

Full Badge Customizer

Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:

Live Dynamic SVG Preview

Markdown (GitHub README)

[![AllMCPs](https://allmcps.com/api/badge/lotw-mcp?style=directory)](https://allmcps.com/mcp/lotw-mcp)

HTML Embed

<a href="https://allmcps.com/mcp/lotw-mcp"><img src="https://allmcps.com/api/badge/lotw-mcp?style=directory" alt="Lotw MCP on AllMCPs" /></a>

Technical Specs & Signals

CategoryDeveloper Tools

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

★ Featured

AllMCPs Server

The official MCP server for AllMCPs.com - submit and manage tools directly from your AI. The open directory for MCP servers. Connect Claude, Cursor, Windsurf, and AI agents to databases, tools, files, and APIs. Explore 10,000+ servers. AllMCPs is the premier, open directory for discovering, evaluating, and installing Model Context Protocol (MCP) servers to equip AI agents and LLMs with real-world superpowers.

Explore Server →

Own this project?

This directory is pre-filled from public sources. Claim via GitHub README, site badge, or DNS TXT to unlock edit access and the Official badge and attach your website — proof is checked automatically, then reviewed by our team.

Free dofollow backlink: add your website and place the AllMCPs badge on it — no claim needed. We detect it automatically and keep it verified as long as the badge stays live.

Claim & get free dofollow

Share & Embed

Add our SVG badge (dark/light directory styles) or embeddable widget to your site.

Explore more

More in 💻 Developer Tools →Best MCP servers for Developers →Alternatives to Lotw MCP →Install in Claude Desktop Install in Cursor Install in VS Code

Lotw MCP

ARRL Logbook of The World MCP server. QSO query, QSL status, DXCC credit tracking.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "lotw-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "lotw-mcp"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

lotw-mcp

MCP server for ARRL Logbook of The World (LoTW) — query confirmations, uploaded QSOs, DXCC credits, and user activity through any MCP-compatible AI assistant.

Part of the qso-graph project. Read-only — uploads require TQSL digital signatures and are out of scope.

Install

Terminal

pip install lotw-mcp

Tools

Tool	Auth	Description
`lotw_confirmations`	Yes	Query confirmed QSLs with band/mode/call/date filters
`lotw_qsos`	Yes	Query all uploaded QSOs (confirmed and unconfirmed)
`lotw_dxcc_credits`	Yes	DXCC award credits from LoTW confirmations
`lotw_download`	Yes	Download QSOs as ADIF file
`lotw_user_activity`	No	Check if a callsign uses LoTW and when they last uploaded
`get_version_info`	No	Service version + upstream LoTW schema version (fleet identity attestation)

Quick Start

1. Set up credentials

lotw-mcp uses qso-graph-auth personas for credential management:

Terminal

pip install qso-graph-auth

qso-auth persona create ki7mt --callsign KI7MT
qso-auth persona provider ki7mt lotw --username KI7MT
qso-auth persona secret ki7mt lotw

Note: The LoTW login is usually your callsign but not always. Pre-Sept 2019 accounts may require lowercase passwords. Avoid special characters in passwords.

2. Configure your MCP client

Claude Desktop

Add to claude_desktop_config.json (~/Library/Application Support/Claude/ on macOS, %APPDATA%\Claude\ on Windows):

config.json

{
  "mcpServers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

Claude Code

Add to .claude/settings.json:

config.json

{
  "mcpServers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

ChatGPT Desktop

config.json

{
  "mcpServers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

Cursor

Add to .cursor/mcp.json (project-level) or ~/.cursor/mcp.json (global):

config.json

{
  "mcpServers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

VS Code / GitHub Copilot

Add to .vscode/mcp.json in your workspace:

config.json

{
  "servers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

Gemini CLI

Add to ~/.gemini/settings.json (global) or .gemini/settings.json (project):

config.json

{
  "mcpServers": {
    "lotw": {
      "command": "lotw-mcp"
    }
  }
}

3. Ask questions

"How many LoTW confirmations did I get this month?"

"Show me all unconfirmed 20m FT8 QSOs uploaded to LoTW in the last 90 days"

"What DXCC credits do I have on 40m CW?"

"Does JA1ABC use LoTW? When did they last upload?"

Public Tool

lotw_user_activity works without any credentials. It uses the public LoTW user activity CSV, cached locally for 7 days.

Testing Without Credentials

Set the mock environment variable:

bash

LOTW_MCP_MOCK=1 lotw-mcp

Performance Notes

LoTW can be slow (30-60s for large queries). lotw-mcp uses 120s timeouts. Use date filters (since, start_date) to limit result sets.

MCP Inspector

bash

lotw-mcp --transport streamable-http --port 8004

Development

bash

git clone https://github.com/qso-graph/lotw-mcp.git
cd lotw-mcp
pip install -e .

License

GPL-3.0-or-later

Read the full README →View source on GitHub →

Related MCP Servers

View all in Developer Tools View all alternatives

Reviews

No reviews yet — be the first to share how this listing worked for you.

Frequently Asked Questions about Lotw MCP

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "lotw-mcp": { "command": "npx", "args": ["-y", "lotw-mcp"] } }

AllMCPs Directory Badge

Full Badge Customizer

Showcase your server listing on GitHub or your project documentation. Embed this dynamic SVG badge to highlight official listing status and live engagement.

Badge Style:

Live Dynamic SVG Preview

Markdown (GitHub README)

[![AllMCPs](https://allmcps.com/api/badge/lotw-mcp?style=directory)](https://allmcps.com/mcp/lotw-mcp)

HTML Embed

<a href="https://allmcps.com/mcp/lotw-mcp"><img src="https://allmcps.com/api/badge/lotw-mcp?style=directory" alt="Lotw MCP on AllMCPs" /></a>

Technical Specs & Signals

CategoryDeveloper Tools

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

★ Featured

AllMCPs Server

Explore Server →

Own this project?

Free dofollow backlink: add your website and place the AllMCPs badge on it — no claim needed. We detect it automatically and keep it verified as long as the badge stays live.

Claim & get free dofollow

Share & Embed

Add our SVG badge (dark/light directory styles) or embeddable widget to your site.

Explore more

More in 💻 Developer Tools →Best MCP servers for Developers →Alternatives to Lotw MCP →Install in Claude Desktop Install in Cursor Install in VS Code