MCP Sudact vs Japan Law Search

In-depth architectural comparison of the MCP Sudact and Japan Law Search 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 MCP Sudact when:

• You need dedicated capabilities in the Legal domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Paid Service).
• You have access to required keys: MCP_SUDACT_TOKEN, MCP_SUDACT_API_BASE, MCP_SUDACT_TIMEOUT.
• Primary tools included: search_cases, get_citation.

Explore MCP Sudact Details

Choose Japan Law Search when:

• You need dedicated capabilities in the Legal domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: search_laws, get_law_structure, get_law_article.

Explore Japan Law Search Details

Feature & Specification Comparison

Specification	MCP Sudact atomno-labs Legal	Japan Law Search Legal
Summary	Russian court practice (Sudact): case search by article, court, instance and dates; full decision text.	Full-text search of all current Japanese laws (official e-Gov data), down to exact article text.
Category & Scope	Legal	Legal

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": {
    "atomno-labs-mcp-sudact": {
      "command": "uvx",
      "args": [
        "atomno-mcp-sudact"
      ],
      "env": {
        "MCP_SUDACT_TOKEN": "YOUR_MCP_SUDACT_TOKEN_HERE",
        "MCP_SUDACT_API_BASE": "YOUR_MCP_SUDACT_API_BASE_HERE",
        "MCP_SUDACT_TIMEOUT": "YOUR_MCP_SUDACT_TIMEOUT_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "japan-law-search": {
      "command": "npx",
      "args": [
        "-y",
        "japan-law-search"
      ]
    }
  }
}

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