What is the key difference between Lotw MCP and Npm?

Lotw MCP belongs to the Developer Tools category with local stdio execution, while Npm belongs to the Developer Tools category with cloud HTTP/SSE execution.

How do I install Lotw MCP or Npm in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Lotw MCP and Npm free or paid?

Lotw MCP operates under a Free / Open Source model (No auth required). Npm operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Lotw MCP lists 6 tools with 0 views and 1 GitHub stars. Npm lists 5 tools with 0 views and 0 GitHub stars.

Can I use both Lotw MCP and Npm together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

Lotw MCP vs Npm

In-depth architectural comparison of the Lotw MCP and Npm MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Lotw MCP

Developer Tools · Local stdio

Quality: 47/100 (Fair) | Auth: No auth required

Npm

Developer Tools · Remote HTTP/SSE

Quality: 55/100 (Good) | Auth: No auth required

Verdict Summary: Choose Lotw MCP if you need specialized Developer Tools tools running via a local process. Choose Npm if your workspace requires Developer Tools integration with remote web transport. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Lotw MCP when:

You need dedicated capabilities in the Developer Tools domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: lotw_confirmations, lotw_qsos, lotw_dxcc_credits.

Explore Lotw MCP Details

Choose Npm when:

You need dedicated capabilities in the Developer Tools domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: search_packages, get_package, get_downloads.

Explore Npm Details

Feature & Specification Comparison

Specification	L Lotw MCP Developer Tools	N Npm Developer Tools
Summary	ARRL Logbook of The World MCP server. QSO query, QSL status, DXCC credit tracking.	npm MCP — wraps the npm Registry API (free, no auth)
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Lotw MCP Tools (6)

lotw_confirmations

Query confirmed QSLs with band/mode/call/date filters

lotw_qsos

Query all uploaded QSOs (confirmed and unconfirmed)

lotw_dxcc_credits

DXCC award credits from LoTW confirmations

lotw_download

Download QSOs as ADIF file

lotw_user_activity

Check if a callsign uses LoTW and when they last uploaded

get_version_info

Service version + upstream LoTW schema version (fleet identity attestation)

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Lotw MCP Configuration

mcpServers (Claude Desktop / Cursor)

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

Npm Configuration

mcpServers (Claude Desktop / Cursor)

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

Frequently Asked Questions

Lotw MCP is categorized under Developer Tools and uses a local stdio subprocess. In contrast, Npm belongs to Developer Tools using remote streaming HTTP/SSE transport. Select Lotw MCP when you need capabilities focused on developer tools and Npm when you require tools for developer tools.

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