Onthisday vs Marine

In-depth architectural comparison of the Onthisday and Marine 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.

Which MCP Server Should You Choose?

Choose Onthisday 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).

Explore Onthisday Details

M

Choose Marine 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: get_wave_forecast, get_current_waves.

Explore Marine Details

Feature & Specification Comparison

Specification	Onthisday Developer Tools	M Marine Developer Tools
Summary	On This Day MCP — wraps byabbe.se/on-this-day (free, no auth)	Marine MCP — wraps marine-api.open-meteo.com (free, no auth)
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

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).

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

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

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