Atlas / MCP servers / u-c4n / Autocad

AutocadCAUTION

Name: Autocad
Author: u-c4n

mcp/u-c4n/autocad-4

MCP server by u-c4n · ai agent tools · ai agents · autocad · Audited 2026-10-08

Production-grade AutoCAD MCP server for AI agents — 122 tools, dual COM (live AutoCAD) + headless ezdxf engines, ISO GD&T and dimension-tolerance validation for CAD automation.

Verdict

CAUTION

Grade

Trust score

79 /100

Exposed tools

93 62r · 27w · 4d

Transport

stdio · streamable-http

License

MIT

Stars

127

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

Production-grade AutoCAD automation for AI agents. Live through COM on Windows, or headless through ezdxf anywhere — one typed contract, two engines.

[](https://github.com/U-C4N/Autocad-MCP/actions/workflows/ci.yml) [](https://pypi.org/project/autocad-mcp-pro/) [](https://pypi.org/project/autocad-mcp-pro/) [](https://github.com/U-C4N/Autocad-MCP/blob/main/pyproject.toml) [](https://github.com/U-C4N/Autocad-MCP/blob/main/LICENSE)

Install · What's new · Tools · Engines · Evidence · Limits · Config · Changelog

Not a mockup. Every line on this sheet was drawn by the tools this server exposes — ISO layers, involute gear geometry, DIN 6885 keyway, section A-A, ISO 129 dimensions, an ISO 286 H7 bore fit, ISO 7200 title block — then rendered headlessly by viewscreenshot. drawingcritique returns 0 issues on it. Rebuild it with python scripts/renderreadmeshowcase.py.

v1.6 release snapshot: 247 tools · 8 resources · 5 prompt templates · 4992 collected te

Read from source at commit e7c5de2b3c33OBSERVED · 2026-10-08

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.

claude-code (pypi)

claude mcp add autocad-mcp-pro -- None autocad-mcp-pro==1.6.0

Exposed tools (93)

62 read · 27 write · 4 destructive. Blast radius: 4 tools can delete or overwrite — an agent that can be talked into calling a tool can be talked into calling this one.

Tool	Risk	Description
`analysis_bounding_box`	read	Get the bounding box (extents) of all entities in the drawing.
`analysis_entity_stats`	read	Analyze the drawing and return entity counts grouped by type and by layer.
`analysis_find_in_region`	read	Find all entities within a rectangular region (crossing selection).
`analysis_layer_stats`	read	Return detailed statistics for each layer: entity count, types present.
`analysis_list_properties`	read	AutoCAD
`analysis_measure_distance`	read	Measure the Euclidean distance between two points.
`analysis_select_by_layer`	read	Get all entities on a specific layer. Returns entity list with handles.
`analysis_select_by_type`	read	Get all entities of a specific type. Returns entity list with handles.
`block_create_from_entities`	write	Create a new block definition from existing entities in the drawing.
`block_find_references`	write	Find all insert references to a specific block definition.
`block_insert`	write	Insert a block and optionally set attribute values.
`block_list`	read	List all block definitions in the drawing (name, origin, attribute count, entity count).
`boundary_from_entities`	read	Chain the given entities into one closed polyline.
`boundary_trace`	read	AutoCAD
`dimension_aligned`	write	Create an aligned dimension that measures the true distance between two points.
`dimension_angular`	write	Create an angular dimension measuring the angle between two lines from a vertex.
`dimstyle_list`	read	Every DIMSTYLE table entry with the seventeen preset variables
`dimstyle_modify`	write	Change variables on an existing dimension style.
`document_close`	read	Close a document and report `saved`, `discarded_changes` and the new `active`.
`document_list`	read	Every open document with `name`, `path`, `active`, `saved` and
`drawing_audit`	read	Audit the drawing: repair every fixable structural problem, and report it.
`drawing_close`	write	Close the active document. If save is True (default), the drawing is
`drawing_export_dxf`	read	Export the current drawing as a DXF file.
`drawing_info`	read	Get comprehensive metadata for the current drawing.
`drawing_purge`	destructive	Purge all unused objects (layers, blocks, linetypes, styles) from the drawing.
`drawing_redo`	read	Reapply the operation you just undid.
`drawing_save`	write	Save the current drawing. Optionally specify a new path.
`drawing_template_list`	write	The templates `drawing_new(template=<name>)` can start from.
`drawing_undo`	read	Undo the last drawing operation.
`entity_batch_create`	write	Create multiple entities in a single call for better performance.
`entity_copy`	write	Copy an entity and move the copy by (dx, dy, dz). Returns info of the new copy.
`entity_create_point`	write	Create a point marker entity at (x, y).
`entity_create_polyline`	write	Create a lightweight 2D polyline through the given points.
`entity_create_rectangle`	write	Create a closed rectangular polyline between two corner points.
`entity_create_spline`	write	Create a NURBS spline curve passing through the specified fit points.
`entity_create_wipeout`	write	Create a WIPEOUT that hides drawing content behind its outline.
`entity_delete`	destructive	Permanently delete an entity by its handle.
`entity_delete_many`	destructive	Delete multiple entities in one call. Returns count of deleted entities.
`entity_get`	read	Get all properties of a specific entity by its handle.
`entity_get_xdata`	read	Extended entity data as {app: [values]}. An app with no XDATA is simply absent.
`entity_mirror`	read	Mirror an entity across a line defined by two points. Returns the mirrored copy.
`entity_trim`	read	Trim `target` against `cutter`, keeping the segment containing (keep_x, keep_y).
`hatch_add_boundary`	write	Add one boundary path built from typed edges - an island inside the hatch.
`layer_freeze`	read	Freeze a layer (makes it invisible and unselectable, faster regeneration).
`layer_hide`	read	Turn off a layer (entities invisible but still processed in regeneration).
`layer_list`	read	List all layers with their properties (color, linetype, frozen, locked, visibility).
`layer_lock`	read	Lock a layer (entities visible but cannot be selected or modified).
`layer_modify`	write	Modify an existing layer
`layer_set_current`	write	Set the active/current layer for new entities.
`layer_show`	read	Turn on a layer that was previously turned off.
`layer_state_delete`	destructive	Remove the named state
`layer_state_list`	read	Every state under `ACADMCP_LAYERSTATES` with its description and layer
`layer_state_restore`	write	Apply a saved state to the layers that still exist.
`layer_state_save`	write	Snapshot every layer
`layer_thaw`	read	Thaw a frozen layer, making it visible and selectable again.
`layer_unlock`	read	Unlock a layer to allow entity selection and modification.
`layout_list`	read	List all layout tabs (Model + paper-space layouts) and the current one.
`layout_rename`	write	Rename a paper-space layout. Entity handles are unaffected.
`linetype_list`	read	Return the names of all linetypes currently loaded in the active drawing.
`mleaderstyle_list`	read	Every MLEADERSTYLE with its four values on both engines
`pid_from_spec`	read	Equipment, valves, instruments and connectors placed, then every line
`pid_symbol_list`	read	The symbols `pid_symbol_insert` can place, with their ports and variant options.
`pid_tag_parse`	read	ISA-5.1-2009 Table 4.1 as a grammar: first letter, modifier, readout and
`plot_style_list`	read	The ctb files AutoCAD ships (`monochrome.ctb`, `acad.ctb`, `Grayscale.ctb`,
`point_tangent`	read	Compute the tangent point on a circle from an external point.
`selection_filter`	read	AutoCAD
`selection_get`	read	Read the entities the user pre-selected in the AutoCAD viewport (COM backend only).
`solid_boolean`	read	Boolean-combine two native 3D solids (COM backend, opt-in).
`system_about`	read	Get detailed information about AutoCAD MCP Pro capabilities and available tools.
`system_capabilities`	read	Return machine-readable support modes for the active backend.
`system_launch`	read	Connect to the application named by `CAD_PROGID` (attach if running,
`system_preferences_get`	read	The whitelisted `Preferences.*` values, enum values as names
`system_preferences_set`	write	Write one preference and report `old`, `new` and `changed`.
`system_prompt_message`	read	`Utility.Prompt`: tell the operator something where they are looking.
`system_set_variable`	write	Set an AutoCAD system variable (e.g. DIMSCALE, LTSCALE, MEASUREMENT).
`system_status`	read	Get full status of the AutoCAD MCP Pro server and backend connection.
`template_apply_layers`	write	Apply a standard layer set from a predefined template.
`template_list`	read	List all available layer templates and their contents.
`textstyle_list`	read	Every STYLE table entry and the one new TEXT/MTEXT will use.
`transaction_begin`	read	Begin a transaction (undo mark).
`transaction_commit`	write	Commit the current transaction.
`transaction_rollback`	read	Rollback the current transaction to the point of transaction_begin.
`ucs_list`	read	The `world` row first, then every UCS table entry with origin and unit
`ucs_restore`	read	Live: `ActiveUCS` for a named entry; `world` runs `UCS World`, which is
`user_pick_point`	read	`Utility.GetPoint`: returns the WCS `x`, `y` (`z`) the operator clicks.
`validation_check`	write	Run quality checks on the current drawing.
`view_named_list`	read	Every VIEW table entry with centre, height and width. No refusals.
`view_named_restore`	read	Live: zooms the active viewport to the saved window the way `-VIEW _R`
`view_screenshot`	read	Capture a screenshot of the current drawing view.
`view_zoom_and_screenshot`	read	Zoom to extents (or window if coordinates given), then capture a screenshot.
`view_zoom_extents`	read	Zoom to show all entities in the drawing (fit drawing in viewport).
`view_zoom_window`	read	Zoom to display the specified rectangular window region.
`viewport_list`	read	List paper-space viewports: handle, geometry, scale and lock state.

Trust audit

CAUTIONgrade C · trust 79/100 Install with care. The audit found things worth knowing before you trust its output.

Layer	What it checks	Result
L0	Provenance & inventory	WARN
L1	Static analysis of the code	PASS
L2	Instruction surface (what it tells the agent)	PASS
L3	Class-specific surface	WARN
L4	Behavioural (sandbox)	SKIPPED

What the source does

Filesystem: declared (4 observation(s))
Network: none-observed
Shell: none-observed
Dependencies: pinned
Secrets in source: none-found

Findings (20)

MEDIUMInventory / provenance · inv.binary · CWE-1104

templates/ansi_b_mech.dwt

ansi_b_mech.dwt

Why it matters. a compiled or binary member cannot be reviewed from source