What is the key difference between Calm Mcp and Constraints Registry?

Calm Mcp belongs to the Developer Tools category with local stdio execution, while Constraints Registry belongs to the Developer Tools category with local stdio execution.

How do I install Calm Mcp or Constraints Registry in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Calm Mcp and Constraints Registry free or paid?

Calm Mcp operates under a Free / Open Source model (No auth required). Constraints Registry operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Calm Mcp lists 0 tools with 1 views and 15 GitHub stars. Constraints Registry lists 0 tools with 0 views and 0 GitHub stars.

Can I use both Calm Mcp and Constraints Registry together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

How do I install Calm Mcp or Constraints Registry in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are Calm Mcp and Constraints Registry free to use, or do they require API keys?

Calm Mcp is listed under a Free / Open Source model with No auth required . Constraints Registry operates under a Free / Open Source model with No auth required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both Calm Mcp and Constraints Registry at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both calm-mcp and constraints-registry as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Calm Mcp has a Quality Score of 43 /100 ( Fair ) with 1 views, 0 installs, and 15 GitHub stars. Constraints Registry holds a Quality Score of 27 /100 ( Emerging ) with 0 views, 0 installs, and 0 GitHub stars.

Side-by-Side Model Context Protocol Comparison

Calm Mcp vs Constraints Registry

In-depth architectural comparison of the Calm Mcp and Constraints Registry 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.

At a Glance & Executive Verdict

Calm Mcp

Developer Tools · Local stdio

Quality: 43/100 (Fair) | Auth: No auth required

Constraints Registry

Developer Tools · Local stdio

Quality: 27/100 (Emerging) | Auth: No auth required

Verdict Summary: Choose Calm Mcp if you need specialized Developer Tools tools running via a local process. Choose Constraints Registry if your workspace requires Developer Tools integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

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

Choose Constraints Registry 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 Constraints Registry Details

Feature & Specification Comparison

Specification	C Calm Mcp Developer Tools	C Constraints Registry Developer Tools
Summary	MCP server giving coding agents a call-graph-aware, hash-verified view of a codebase, not grep.	Policy-as-code guardrails for AI coding agents, validated via OPA, Conftest, Checkov & Semgrep.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Calm Mcp Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Constraints Registry Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

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).

Calm Mcp Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "calm-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@eilodon/calm-mcp"
      ]
    }
  }
}

Constraints Registry Configuration

mcpServers (Claude Desktop / Cursor)

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

Frequently Asked Questions

Calm Mcp is categorized under Developer Tools and uses a local stdio subprocess. In contrast, Constraints Registry belongs to Developer Tools using local stdio subprocess. Select Calm Mcp when you need capabilities focused on developer tools and Constraints Registry when you require tools for developer tools.

More alternatives to Calm Mcp More alternatives to Constraints Registry Developer Tools category hub

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