Expression Atlas vs Openholidays

In-depth architectural comparison of the Expression Atlas and Openholidays 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 Expression Atlas 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 Expression Atlas Details

Choose Openholidays 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 Openholidays Details

Feature & Specification Comparison

Specification	Expression Atlas Developer Tools	Openholidays Developer Tools
Summary	EBI Expression Atlas MCP.	OpenHolidays MCP.
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": {
    "expression-atlas": {
      "url": "https://pipeworx.io"
    }
  }
}

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

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