Open Primitive vs Archstone

In-depth architectural comparison of the Open Primitive and Archstone 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?

O

Choose Open Primitive when:

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

Explore Open Primitive Details

Choose Archstone when:

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

Explore Archstone Details

Feature & Specification Comparison

Specification	O Open Primitive Developer Tools	Archstone Developer Tools
Summary	16 US federal data domains as MCP tools. Signed responses with provenance.	Compile your own business capabilities from declarative YAML and serve them as MCP tools.
Category & Scope	Developer Tools	Developer Tools
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": {
    "open-primitive": {
      "command": "npx",
      "args": [
        "-y",
        "open-primitive"
      ]
    }
  }
}

{
  "mcpServers": {
    "archstone": {
      "command": "npx",
      "args": [
        "-y",
        "npm"
      ]
    }
  }
}

Related MCP Server Comparisons