What is the key difference between Carbon Interface and Valet?

Carbon Interface belongs to the Developer Tools category with local stdio execution, while Valet belongs to the Developer Tools category with local stdio execution.

How do I install Carbon Interface or Valet 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 Carbon Interface and Valet free or paid?

Carbon Interface operates under a Free / Open Source model (No auth required). Valet operates under a Freemium model (No auth required).

Which MCP server has more tools and community activity?

Carbon Interface lists 3 tools with 0 views and 0 GitHub stars. Valet lists 0 tools with 2 views and 0 GitHub stars.

Can I use both Carbon Interface and Valet 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.

Side-by-Side Model Context Protocol Comparison

Carbon Interface vs Valet

In-depth architectural comparison of the Carbon Interface and Valet 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

Carbon Interface

Developer Tools · Local stdio

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

Valet

Developer Tools · Local stdio

Quality: 48/100 (Fair) | Auth: No auth required

Verdict Summary: Choose Carbon Interface if you need specialized Developer Tools tools running via a local process. Choose Valet 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 Carbon Interface 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: estimate_electricity, estimate_flight, estimate_vehicle.

Explore Carbon Interface Details

Choose Valet when:

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

Explore Valet Details

Feature & Specification Comparison

Specification	C Carbon Interface Developer Tools	Valet Developer Tools
Summary	Carbon Interface MCP — Carbon Interface API (v1)	Get share links, publish and manage websites, artifacts and agents. No account needed.
Category & Scope	Developer Tools	Developer Tools
Quality signal

Tools & Capabilities Breakdown

Carbon Interface Tools (3)

estimate_electricity

Estimate CO2 emissions from electricity usage. Returns carbon emissions in grams, kg, and metric tons. Example: estimate_electricity(500, "us", "kwh") for 500 kWh in the US.

estimate_flight

Estimate CO2 emissions from a flight. Provide number of passengers and flight legs (departure/arrival airport IATA codes). Returns per-passenger and total carbon emissions. Example: estimate_flight(2, [{"departure_airport": "SFO", "destination_airport": "JFK"}]).

estimate_vehicle

Estimate CO2 emissions from driving a vehicle. Provide distance and a vehicle model ID (from Carbon Interface). Returns carbon emissions in grams, kg, and metric tons. Example: estimate_vehicle(100, "7268a9b7-17e8-4c8d-acca-57059252afe9", "mi").

Valet 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).

Carbon Interface Configuration

mcpServers (Claude Desktop / Cursor)

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

Valet Configuration

mcpServers (Claude Desktop / Cursor)

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

Frequently Asked Questions

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

More alternatives to Carbon Interface More alternatives to Valet Developer Tools category hub