AutoCAD LT AutoLISP MCP Server

Features

• Generates and executes AutoLISP code in AutoCAD LT

• Creates basic shapes (lines, circles, polylines, text)

• Handles block insertion with attribute management

• Supports connecting blocks with lines between named connection points

• Arranges multiple blocks in sequence with custom spacing

• Provides robust layer creation and management

• Creates hatches and dimensions for technical drawings

• Allows entity rotation and manipulation

• Supports direct custom AutoLISP code execution

• Enables text-to-CAD functionality through natural language

Prerequisites

• AutoCAD LT 2024 or newer (with AutoLISP support)

• Python 3.10 or higher

• Claude Desktop or other MCP client application

Setup Instructions

1. Install Dependencies:

2. Configure Claude Desktop:

3. Start AutoCAD LT:

4. Start the Server:

5. Test the Connection:

Available Tools

• get_autocad_status: Check connection to AutoCAD

• create_line: Draw a line between two points

• create_circle: Create a circle with defined center and radius

• create_text: Add text labels at specified coordinates

• insert_block: Insert a block with optional ID attribute, scale, and rotation

• connect_blocks: Connect two blocks with a line between named connection points

• label_block: Add a text label to a block

• arrange_blocks: Arrange multiple blocks in a sequence with custom spacing

• create_polyline: Create a polyline from a series of points

• rotate_entity_by_id: Rotate an entity around a base point

• create_linear_dimension: Add a linear dimension between two points

• create_hatch: Add hatching to a closed polyline area

• set_layer_properties: Create or modify layers with color, linetype, lineweight, etc.

• execute_custom_autolisp: Run custom AutoLISP code directly

LISP Library Structure

1. error_handling.lsp: Base error handling and validation functions

2. basic_shapes.lsp: Core functions for creating lines, circles, and text

3. drafting_helpers.lsp: Functions for block manipulation, layer management, and connecting elements

4. block_id_helpers.lsp: Functions for finding and manipulating blocks by ID attribute

5. selection_and_file.lsp: Selection set management and file operations

6. advanced_geometry.lsp: Extended geometry creation and manipulation

7. annotation_helpers.lsp: Text and dimension creation tools

8. layout_management.lsp: Functions for managing layouts and viewports

Usage Examples

1. Basic Drawing Operations:

2. Block Operations:

3. Multi-Block Operations:

4. Advanced Operations:

5. Custom AutoLISP:

Limitations

• Requires AutoCAD LT 2024 or newer with AutoLISP support

• Relies on window focus and keyboard simulation for command execution

• User should not interact with AutoCAD while commands are being sent

• Limited to 2D drawing operations

• Connection points for blocks use predefined connection point names (CONN_DEFAULT1, CONN_DEFAULT2)

• Layer colors must be specified as strings (e.g., "red", "yellow", "120")

Troubleshooting

• LISP files failing to load

• Window focus issues with AutoCAD

• Function cancelled errors

• Communication problems between the server and AutoCAD

License

Contributing

AutoCAD LT AutoLISP MCP Server

Features

• Generates and executes AutoLISP code in AutoCAD LT

• Creates basic shapes (lines, circles, polylines, text)

• Handles block insertion with attribute management

• Supports connecting blocks with lines between named connection points

• Arranges multiple blocks in sequence with custom spacing

• Provides robust layer creation and management

• Creates hatches and dimensions for technical drawings

• Allows entity rotation and manipulation

• Supports direct custom AutoLISP code execution

• Enables text-to-CAD functionality through natural language

Prerequisites

• AutoCAD LT 2024 or newer (with AutoLISP support)

• Python 3.10 or higher

• Claude Desktop or other MCP client application

Setup Instructions

1. Install Dependencies:

2. Configure Claude Desktop:

3. Start AutoCAD LT:

4. Start the Server:

5. Test the Connection:

Available Tools

• get_autocad_status: Check connection to AutoCAD

• create_line: Draw a line between two points

• create_circle: Create a circle with defined center and radius

• create_text: Add text labels at specified coordinates

• insert_block: Insert a block with optional ID attribute, scale, and rotation

• connect_blocks: Connect two blocks with a line between named connection points

• label_block: Add a text label to a block

• arrange_blocks: Arrange multiple blocks in a sequence with custom spacing

• create_polyline: Create a polyline from a series of points

• rotate_entity_by_id: Rotate an entity around a base point

• create_linear_dimension: Add a linear dimension between two points

• create_hatch: Add hatching to a closed polyline area

• set_layer_properties: Create or modify layers with color, linetype, lineweight, etc.

• execute_custom_autolisp: Run custom AutoLISP code directly

LISP Library Structure

1. error_handling.lsp: Base error handling and validation functions

2. basic_shapes.lsp: Core functions for creating lines, circles, and text

3. drafting_helpers.lsp: Functions for block manipulation, layer management, and connecting elements

4. block_id_helpers.lsp: Functions for finding and manipulating blocks by ID attribute

5. selection_and_file.lsp: Selection set management and file operations

6. advanced_geometry.lsp: Extended geometry creation and manipulation

7. annotation_helpers.lsp: Text and dimension creation tools

8. layout_management.lsp: Functions for managing layouts and viewports

Usage Examples

1. Basic Drawing Operations:

2. Block Operations:

3. Multi-Block Operations:

4. Advanced Operations:

5. Custom AutoLISP:

Limitations

• Requires AutoCAD LT 2024 or newer with AutoLISP support

• Relies on window focus and keyboard simulation for command execution

• User should not interact with AutoCAD while commands are being sent

• Limited to 2D drawing operations

• Connection points for blocks use predefined connection point names (CONN_DEFAULT1, CONN_DEFAULT2)

• Layer colors must be specified as strings (e.g., "red", "yellow", "120")

Troubleshooting

• LISP files failing to load

• Window focus issues with AutoCAD

• Function cancelled errors

• Communication problems between the server and AutoCAD

License

Contributing