Fusion 360 Interactive Control

This skill enables Claude to control Autodesk Fusion 360 through the Claude Bridge add-in. You can create 3D models by sending commands that are automatically executed in Fusion 360.

Prerequisites

1. Fusion 360 must be running with a design open
2. ClaudeBridge add-in must be active (Shift+S → Add-Ins → ClaudeBridge → Run)

How It Works

Claude sends commands by writing JSON to:

<ClaudeBridge-directory>/commands.json

The bridge polls every second and executes commands. Results appear in:

<ClaudeBridge-directory>/results.json

Sending Commands

To send a command, write a JSON file with this structure:

{
  "id": <incrementing_number>,
  "action": "<command_name>",
  "params": { <parameters> }
}

Important: The id must be higher than the previous command, or it will be ignored.

Workflow Pattern

1. Check the last command ID by reading results.json
2. Send command with incremented ID
3. Read results to confirm success
4. Repeat for next command

Available Commands

See reference.md for the complete API reference.

Getting Design Data

• export_session - Export all design data to a timestamped folder (replaces all individual query commands)

Connection

• ping - Test connection
• message - Display a message in Fusion 360

Construction Geometry

• create_offset_plane - Create plane at Z offset (for multi-level geometry)
• create_plane_at_angle - Create angled construction plane

Sketch Commands

• create_sketch - Create sketch on plane (supports plane_index for offset planes)
• create_sketch_on_face - Create sketch on existing body face
• draw_circle - Draw a circle
• draw_rectangle - Draw a rectangle
• draw_line - Draw a line
• draw_polygon - Draw a regular polygon
• draw_arc / draw_arc_sweep / draw_arc_three_points - Draw arcs
• list_profiles - List profiles in a sketch

Sketch Constraints

• add_constraint_midpoint - Constrain point to line midpoint
• add_constraint_coincident - Constrain point to curve
• add_constraint_coincident_points - Constrain two line endpoints together
• add_constraint_vertical - Make line vertical
• add_constraint_horizontal - Make line horizontal
• get_sketch_constraints - List all constraints in a sketch
• delete_constraint - Delete a constraint by index

3D Operations

• extrude - Extrude a profile into 3D
• revolve - Revolve a profile around an axis
• loft / loft_rails - Create smooth transitions between profiles
• fillet - Round edges
• chamfer - Bevel edges
• shell - Hollow out a body

Parameters

• set_parameter - Create/update a user parameter

Example: Create a Box

See examples.md for complete workflow examples.

Units

All dimensions are in centimeters (Fusion 360's internal unit):

• 1 cm = 10 mm
• To create a 50mm object, use 5 (cm)

Tips

• Always create a sketch before drawing shapes
• Use list_profiles to find the correct profile index before extruding
• If a command fails, check results.json for error details