Hammer MCP
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
No arguments | |||
Instructions
Guidance the server publishes about itself, which clients place ahead of the tool catalog so the model reads it before choosing anything.
This server publishes no instructions, or was last inspected before Glama recorded them.
Capabilities
Features and capabilities supported by this server
Protocol revision2025-11-25
| Capability | Details |
|---|---|
| tools | {
"listChanged": false
} |
| prompts | {
"listChanged": false
} |
| resources | {
"subscribe": false,
"listChanged": false
} |
| experimental | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| draw_lineD | Draw a DXF line. |
| draw_circleC | Draw a DXF circle. |
| draw_arcC | Draw a DXF arc using angles in degrees. |
| draw_polylineC | Draw a DXF lightweight polyline. |
| draw_rectangleC | Draw an axis-aligned DXF rectangle. |
| draw_textC | Add single-line text to the DXF drawing. |
| draw_hatchC | Add a hatch inside a closed polygon boundary. |
| add_dimensionC | Add a linear DXF dimension. |
| create_layerC | Create or update a DXF layer. |
| save_drawingC | Save the current drawing as DXF. |
| render_preview_2dC | Render the current DXF drawing to PNG. |
| create_boxC | Create an OpenSCAD box. |
| create_cylinderC | Create an OpenSCAD cylinder. |
| create_sphereC | Create an OpenSCAD sphere. |
| linear_extrudeC | Extrude a closed 2D polygon in OpenSCAD. |
| boolean_unionD | Union OpenSCAD objects. |
| boolean_differenceC | Subtract later OpenSCAD objects from the first. |
| boolean_intersectionC | Intersect OpenSCAD objects. |
| save_openscadC | Save the current OpenSCAD source without invoking the CLI. |
| render_preview_3dC | Render the current OpenSCAD model to PNG. |
| export_modelC | Export the current OpenSCAD model. |
| execute_scriptC | Execute guarded ezdxf Python or append raw OpenSCAD code. |
| process_commandC | Plan and execute a natural-language CAD request. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
TDQS
Scored across 23 tools
All tools have clearly distinct purposes, separated by domain (DXF vs OpenSCAD) and operation type. No two tools appear to do the same thing; even similar-named tools like create_box and draw_rectangle target different axes (3D vs 2D).
Naming conventions are mixed: some use 'draw_', some 'create_', some 'boolean_', and others have no consistent prefix (e.g., linear_extrude, export_model). While readable, the lack of a uniform pattern makes it harder for an agent to predict tool names.
23 tools is slightly on the higher side but appropriate for a CAD server covering both 2D and 3D. Each tool serves a distinct purpose, and the count is justified by the need to handle primitives, operations, rendering, and file I/O.
The tool set covers basic shape creation, boolean operations, extrusion, rendering, and file saving. Minor gaps include lack of editing tools for existing objects (e.g., move, rotate) and more advanced DXF entities like splines, but core CAD workflows are supported.