Color Companion MCP MCP server

An MCP server that exposes the Color Companion engine, allowing agents to convert colors between formats like hex, RGB, HSL, OKLCH, and CMYK, and compute color harmonies. It serves as one of four surfaces for the same underlying pure function, ensuring consistency across the web page, markdown, JSON API, and MCP interfaces.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by Gumball Tools

MCP endpoint (Streamable HTTP)

https://color-companion.gumballtools.com/api/mcp

Vendor documentation

What you can do with it

Convert colors between hex, RGB, HSL, OKLCH, and CMYK formats
Compute color harmonies for design consistency
Integrate color analysis into AI agent workflows via Streamable HTTP

Tools advertised by the last live check:

analyse_color

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

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Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http color-companion-mcp https://color-companion.gumballtools.com/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add color-companion-mcp --url https://color-companion.gumballtools.com/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable color-companion-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "color-companion-mcp": {
      "url": "https://color-companion.gumballtools.com/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "color-companion-mcp": {
      "type": "streamableHttp",
      "url": "https://color-companion.gumballtools.com/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start color-companion-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "color-companion-mcp": {
      "type": "http",
      "url": "https://color-companion.gumballtools.com/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http color-companion-mcp https://color-companion.gumballtools.com/api/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "color-companion-mcp": {
      "url": "https://color-companion.gumballtools.com/api/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "color-companion-mcp": {
      "serverUrl": "https://color-companion.gumballtools.com/api/mcp"
    }
  }
}

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