eraser-io-mcp-server

Overview

The eraser-io-mcp-server is a comprehensive implementation that enables users to generate diagrams through the Model Context Protocol. It supports multiple diagram types including sequence diagrams, flowcharts, ER diagrams, and cloud architectures. The server provides flexible output options, returning either image URLs or base64-encoded file content, along with links to edit diagrams directly in Eraser. Features like icon validation, customizable themes, and scaling options make it a versatile tool for technical documentation and diagram generation.

Try asking AI

After installing, here are 6 things you can ask your AI assistant:

• render_eraser_diagram

  Renders diagrams using the Eraser API with customizable themes and output formats.

  Try:Render a sequence diagram with Alice saying hello to BobTry:Create a cloud architecture diagram for my AWS setupTry:Generate a flowchart diagram with custom icons

Note: The tool name 'render_eraser_diagram' was inferred from the main CLI script name, as the README doesn't explicitly document MCP tool names. The functionality is clearly described in the CLI usage examples.

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Installation

pip install -e .

uv pip install -e .

{
  "mcpServers": {
    "eraser": {
      "command": "python",
      "args": ["/path/to/eraser-io-mcp-server/main.py"]
    }
  }
}

{
  "mcpServers": {
    "eraser": {
      "type": "streamable-http",
      "url": "http://localhost:8000/mcp",
      "headers": {
        "Authorization": "Bearer your_auth_token"
      }
    }
  }
}

FAQ

How do I authenticate with the Eraser API?

Set your Eraser API token as an environment variable (ERASER_API_TOKEN) or in a .env file in the project directory.

Can I use custom icons in my diagrams?

Yes, but custom icons not in the standard Eraser list will trigger a warning. You can disable icon validation by setting SKIP_ICON_CHECK=true.

What diagram types are supported?

Sequence diagrams, cloud architecture diagrams, flowcharts, entity relationship diagrams, and more. Check the Eraser documentation for a complete list.

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