Is the Carbon Arc MCP server free to use?

Yes. Carbon Arc is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

Is the Carbon Arc MCP server free to use?

Yes. Carbon Arc is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

Carbon Arc

The infrastructure for the AI economy: primitives for inference, agents, and decisions.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Install Config Generator

Choose your client

claude_desktop_config.json

{
  "mcpServers": {
    "carbon-arc": {
      "command": "npx",
      "args": [
        "-y",
        "https://mcp.carbonarc.ai"
      ]
    }
  }
}

💡 Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Documentation Overview

Carbon Arc MCP

Endpoint: https://mcp.carbonarc.ai (Streamable HTTP)
Auth: OAuth 2.0 + Dynamic Client Registration
Docs: https://docs.carbonarc.ai/platform/mcp/carbonarc-mcp

Getting access

To get an API Token:

Sign up for Carbon Arc at https://app.carbonarc.co/pricing
Log into your account
Get your API Token from your user profile

Questions or need help?

Support: support@carbonarc.co
Sales: sales@carbonarc.co

Install via Cursor

Open Cursor → Plugins → Browse Marketplace
Search "Carbon Arc" → Install

License: Apache 2.0

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Frequently Asked Questions about Carbon Arc

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "carbon-arc": { "command": "npx", "args": ["-y", "Carbon Arc"] } }

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Technical Specs & Signals

CategoryDeveloper Tools

41Quality signal: Fair · 41/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools16/30

Adoption & activity5/15

Community engagement0/10

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More in 💻 Developer Tools →Best MCP servers for Developers →Alternatives to Carbon Arc →Install in Claude Desktop Install in Cursor Install in VS Code