Heddle vs Lawstronaut

In-depth architectural comparison of the Heddle and Lawstronaut 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 Heddle 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: get_contract, put_contract, get_dependents.

Explore Heddle Details

Choose Lawstronaut when:

• You need dedicated capabilities in the Legal domain.
• You prefer remote streaming HTTP/SSE transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).
• Primary tools included: list_jurisdictions, list_domains, domain.

Explore Lawstronaut Details

Feature & Specification Comparison

Specification	Heddle Legal	Lawstronaut Legal
Summary	Content-addressed contracts and a verification cache that cut agent context by skipping proven code.	Connect AI to millions of laws and court cases with the Lawstronaut MCP.
Category & Scope	Legal	Legal
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": {
    "heddle": {
      "command": "uvx",
      "args": [
        "hashloom"
      ]
    }
  }
}

{
  "mcpServers": {
    "lawstronaut-2": {
      "url": "https://mcp.lawstronaut.com"
    }
  }
}

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