Common Paper vs JSON Contracts

In-depth architectural comparison of the Common Paper and JSON Contracts 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?

C

Choose Common Paper 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).

Explore Common Paper Details

Choose JSON Contracts 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).

Explore JSON Contracts Details

Feature & Specification Comparison

Specification	C Common Paper Legal	JSON Contracts Legal
Summary	Create, send, negotiate, sign, and track contracts with Common Paper.	JSON contract registry and validator for structured LLM and agent outputs.
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": {
    "common-paper": {
      "command": "npx",
      "args": [
        "-y",
        "common-paper"
      ]
    }
  }
}

{
  "mcpServers": {
    "json-contracts": {
      "command": "npx",
      "args": [
        "-y",
        "json-contracts@latest"
      ]
    }
  }
}

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