Legion MCP vs Zotero Bridge

In-depth architectural comparison of the Legion MCP and Zotero Bridge 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 Legion MCP when:

• You need dedicated capabilities in the Databases domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: other (Free / Open Source).
• You have access to required keys: DB_TYPE, DB_CONFIG, DB_CONFIGS.
• Primary tools included: execute_query, execute_query_json, get_table_columns.

Explore Legion MCP Details

Choose Zotero Bridge when:

• You need dedicated capabilities in the Databases domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Zotero Bridge Details

Feature & Specification Comparison

Specification	Legion MCP TheRaLabs Databases	Zotero Bridge Databases
Summary	Universal database MCP server supporting multiple database types including PostgreSQL, Redshift, CockroachDB, MySQL, RDS MySQL, Microsoft SQL Server, BigQuery, Oracle DB, and SQLite.	MCP Server for Zotero SQLite Database - collection, tagging, PDF reading and more.
Category & Scope	Databases

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": {
    "theralabs-legion-mcp": {
      "command": "uvx",
      "args": [
        "database-mcp"
      ],
      "env": {
        "DB_TYPE": "YOUR_DB_TYPE_HERE",
        "DB_CONFIG": "YOUR_DB_CONFIG_HERE",
        "DB_CONFIGS": "YOUR_DB_CONFIGS_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "zotero-bridge": {
      "command": "npx",
      "args": [
        "-y",
        "zotero-bridge"
      ]
    }
  }
}

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