Gateway vs Legion MCP

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

• You need dedicated capabilities in the Databases domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: API Key required (Free / Open Source).
• Primary tools included: Automatic API generation from schema and sampled data, MCP and MCP SSE endpoints, REST and OpenAPI 3.1 output.

Explore Gateway Details

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.

Feature & Specification Comparison

Specification	Gateway centralmind Databases	Legion MCP TheRaLabs Databases
Summary	MCP and MCP SSE Server that automatically generate API based on database schema and data. Supports PostgreSQL, Clickhouse, MySQL, Snowflake, BigQuery, Supabase	Universal database MCP server supporting multiple database types including PostgreSQL, Redshift, CockroachDB, MySQL, RDS MySQL, Microsoft SQL Server, BigQuery, Oracle DB, and SQLite.
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": {
    "centralmind-gateway": {
      "url": "http://localhost:9090/sse"
    }
  }
}

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

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