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Fusion 360 MCP Server

A Model Context Protocol (MCP) server that interfaces between Cline and Autodesk Fusion 360. This server exposes Fusion 360 toolbar-level commands as callable tools that map directly to Fusion's API.

🧠 Overview

This project allows Cline to:

  • Parse natural language prompts (e.g., "Make a box with rounded corners")

  • Resolve them into Fusion tool actions (e.g., CreateSketch → DrawRectangle → Extrude → Fillet)

  • Call those tools through this MCP server

  • Return Python scripts that can be executed in Fusion 360

Related MCP server: MCP Atlassian Server

🛠️ Installation

Prerequisites

  • Python 3.9 or higher

  • Autodesk Fusion 360

Setup

  1. Clone this repository:

    git clone https://github.com/yourusername/fusion360-mcp-server.git cd fusion360-mcp-server
  2. Install dependencies:

    pip install -r requirements.txt

🚀 Usage

Running the HTTP Server

cd src python main.py

This will start the FastAPI server at http://127.0.0.1:8000.

Running as an MCP Server

cd src python main.py --mcp

This will start the server in MCP mode, reading from stdin and writing to stdout.

API Endpoints

  • GET /: Check if the server is running

  • GET /tools: List all available tools

  • POST /call_tool: Call a single tool and generate a script

  • POST /call_tools: Call multiple tools in sequence and generate a script

Example API Calls

List Tools

curl -X GET http://127.0.0.1:8000/tools

Call a Single Tool

curl -X POST http://127.0.0.1:8000/call_tool \ -H "Content-Type: application/json" \ -d '{ "tool_name": "CreateSketch", "parameters": { "plane": "xy" } }'

Call Multiple Tools

curl -X POST http://127.0.0.1:8000/call_tools \ -H "Content-Type: application/json" \ -d '{ "tool_calls": [ { "tool_name": "CreateSketch", "parameters": { "plane": "xy" } }, { "tool_name": "DrawRectangle", "parameters": { "width": 10, "depth": 10 } }, { "tool_name": "Extrude", "parameters": { "height": 5 } } ] }'

📦 Available Tools

The server currently supports the following Fusion 360 tools:

Create

  • CreateSketch: Creates a new sketch on a specified plane

  • DrawRectangle: Draws a rectangle in the active sketch

  • DrawCircle: Draws a circle in the active sketch

  • Extrude: Extrudes a profile into a 3D body

  • Revolve: Revolves a profile around an axis

Modify

  • Fillet: Adds a fillet to selected edges

  • Chamfer: Adds a chamfer to selected edges

  • Shell: Hollows out a solid body with a specified wall thickness

  • Combine: Combines two bodies using boolean operations

Export

  • ExportBody: Exports a body to a file

🔌 MCP Integration

To use this server with Cline, add it to your MCP settings configuration file:

{ "mcpServers": { "fusion360": { "command": "python", "args": ["/path/to/fusion360-mcp-server/src/main.py", "--mcp"], "env": {}, "disabled": false, "autoApprove": [] } } }

🧩 Tool Registry

Tools are defined in src/tool_registry.json. Each tool has:

  • name: The name of the tool

  • description: What the tool does

  • parameters: The parameters the tool accepts

  • docs: Link to relevant Fusion API documentation

Example tool definition:

{ "name": "Extrude", "description": "Extrudes a profile into a 3D body.", "parameters": { "profile_index": { "type": "integer", "description": "Index of the profile to extrude.", "default": 0 }, "height": { "type": "number", "description": "Height of the extrusion in mm." }, "operation": { "type": "string", "description": "The operation type (e.g., 'new', 'join', 'cut', 'intersect').", "default": "new" } }, "docs": "https://help.autodesk.com/view/fusion360/ENU/?guid=GUID-6D381FCD-22AB-4F08-B4BB-5D3A130189AC" }

📝 Script Generation

The server generates Fusion 360 Python scripts based on the tool calls. These scripts can be executed in Fusion 360's Script Editor.

Example generated script:

import adsk.core, adsk.fusion, traceback def run(context): ui = None try: app = adsk.core.Application.get() ui = app.userInterface design = app.activeProduct # Get the active component in the design component = design.rootComponent # Create a new sketch on the xy plane sketches = component.sketches xyPlane = component.xYConstructionPlane sketch = sketches.add(xyPlane) # Draw a rectangle rectangle = sketch.sketchCurves.sketchLines.addTwoPointRectangle( adsk.core.Point3D.create(0, 0, 0), adsk.core.Point3D.create(10, 10, 0) ) # Extrude the profile prof = sketch.profiles.item(0) extrudes = component.features.extrudeFeatures extInput = extrudes.createInput(prof, adsk.fusion.FeatureOperations.NewBodyFeatureOperation) distance = adsk.core.ValueInput.createByReal(5) extInput.setDistanceExtent(False, distance) extrude = extrudes.add(extInput) ui.messageBox('Operation completed successfully') except: if ui: ui.messageBox('Failed:\n{}'.format(traceback.format_exc()))

🧪 Extending the Server

Adding New Tools

  1. Add a new tool definition to src/tool_registry.json

  2. Add a script template to SCRIPT_TEMPLATES in src/script_generator.py

  3. Add parameter processing logic to _process_parameters in src/script_generator.py

📚 Documentation Links

🔄 Future Enhancements

  • Session state tracking for context-aware operations

  • Dynamic tool registration

  • Automation via socket or file polling

  • More Fusion commands

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

-
security - not tested
A
license - permissive license
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quality - not tested

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