Calm MCP vs Openharness

In-depth architectural comparison of the Calm MCP and Openharness 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 Calm MCP 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 Calm MCP Details

O

Choose Openharness 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).
• Primary tools included: get_agent_sessions, get_agent_session.

Explore Openharness Details

Feature & Specification Comparison

Specification	Calm MCP Developer Tools	O Openharness Developer Tools
Summary	MCP server giving coding agents a call-graph-aware, hash-verified view of a codebase, not grep.	Lets AI coding agents discover and reference each other's recent sessions.
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": {
    "calm-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@eilodon/calm-mcp"
      ]
    }
  }
}

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

Related MCP Server Comparisons