# Alibre Design CAD MCP Server (nuget · AlibreObjectModel.Mcp)

MCP server exposing the Alibre Design CAD API: parts, sketches, features, parameters.

- Trust score: 67/100 (medium)
- Change this week: +5
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-20

## Components

- nuget · `AlibreObjectModel.Mcp`: 67/100 (this document), [markdown](https://verifymcp.io/servers/stephensmitchell-alibreobjectmodel-mcp/alibreobjectmodel-mcp.md), [page](https://verifymcp.io/servers/stephensmitchell-alibreobjectmodel-mcp/alibreobjectmodel-mcp)

## Channel facts

- Registry: `nuget`
- Package: `AlibreObjectModel.Mcp`
- Version: `2.0.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-20.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 19/100
  - Repository check failed: no source repository is declared.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 9 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 77/100
  - AI-judged instruction clarity (excellent).
  - Tool/resource definitions use about 1018 tokens (~40/item across 25 items; 25 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 30/100
  - Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 82/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 46% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add stephensmitchell-alibreobjectmodel-mcp -- dnx AlibreObjectModel.Mcp@2.0.1 --yes
```

### Codex

```bash
codex mcp add stephensmitchell-alibreobjectmodel-mcp -- dnx AlibreObjectModel.Mcp@2.0.1 --yes
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "stephensmitchell-alibreobjectmodel-mcp": {
      "type": "local",
      "command": [
        "dnx",
        "AlibreObjectModel.Mcp@2.0.1",
        "--yes"
      ],
      "enabled": true
    }
  }
}
```

### Hermes

```yaml
mcp_servers:
  stephensmitchell-alibreobjectmodel-mcp:
    command: "dnx"
    args: ["AlibreObjectModel.Mcp@2.0.1", "--yes"]
```

### Other

```json
{
  "mcpServers": {
    "stephensmitchell-alibreobjectmodel-mcp": {
      "command": "dnx",
      "args": [
        "AlibreObjectModel.Mcp@2.0.1",
        "--yes"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-20 (score 67, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-18 (score 66, +4)

- [functional improvement] Stability: unverified → 0.23

### 2026-08-11 (score 62)

First indexed and scored.

## MCP tools (25)

### `get_part_parameter` (~29 tokens)

Get the value of one parameter on the active part.

Input parameters:

- `name` (string, required): Parameter name

### `rename_feature` (~64 tokens)

Rename a feature on the active part. The feature is identified by name or by 1-based index (as a string).

Input parameters:

- `feature_ref` (string, required): Existing feature name, or 1-based index as a string
- `new_name` (string, required): New feature name

### `list_part_parameters` (~27 tokens)

List parameters (driving values) of the active part with name, value and units.

### `add_rectangle_to_sketch` (~75 tokens)

Add a 2-point rectangle (axis-aligned) to a sketch. Coordinates are in the sketch's drawing units.

Input parameters:

- `sketch_name` (string, required)
- `x1` (number, required)
- `x2` (number, required)
- `y1` (number, required)
- `y2` (number, required)

### `create_part` (~34 tokens)

Create a new empty part. Returns the new session's name.

Input parameters:

- `name` (string, required): Initial part name (without extension)

### `active_session_info` (~17 tokens)

Detailed info about the currently active session.

### `add_line_to_sketch` (~63 tokens)

Add a single 2-point line segment to a sketch.

Input parameters:

- `sketch_name` (string, required)
- `x1` (number, required)
- `x2` (number, required)
- `y1` (number, required)
- `y2` (number, required)

### `open_file` (~55 tokens)

Open a file from disk into Alibre Design. Returns the new session's name and kind.

Input parameters:

- `path` (string, required): Absolute Windows path to the .AD_PRT/.AD_ASM/.AD_DRW or non-native file

### `add_circle_to_sketch` (~50 tokens)

Add a centre + radius circle to a sketch.

Input parameters:

- `cx` (number, required)
- `cy` (number, required)
- `radius` (number, required)
- `sketch_name` (string, required)

### `list_part_features` (~24 tokens)

List the features of the active part by name and 1-based index.

### `alibre_version` (~24 tokens)

Report the AlibreObjectModel package version (no Alibre session needed).

### `create_sketch` (~72 tokens)

Create a new sketch on a design plane (XY / XZ / YZ, or a 0-based plane index).

Input parameters:

- `name` (string, required): Sketch display name
- `plane` (string, required): Plane: 'XY', 'XZ', 'YZ', or a 0-based numeric index into DesignPlanes

### `set_part_parameter` (~47 tokens)

Set a parameter on the active part. Triggers a regen.

Input parameters:

- `name` (string, required): Parameter name
- `value` (number, required): New value (in the parameter's existing units)

### `close_active_session` (~28 tokens)

Close the active session, optionally saving first.

Input parameters:

- `save` (boolean): Save before closing

### `get_part_summary` (~36 tokens)

Quick overview of the active part: name, body count, face/edge/vertex counts, volume, surface area, feature count.

### `suppress_feature` (~55 tokens)

Suppress (hide and disable) or unsuppress a feature on the active part.

Input parameters:

- `feature_ref` (string, required): Feature name or 1-based index
- `suppressed` (boolean, required): True to suppress, false to unsuppress

### `alibre_attach` (~24 tokens)

Attach to a running Alibre Design instance and report the active-session info.

### `rename_sketch` (~33 tokens)

Rename a sketch on the active part.

Input parameters:

- `new_name` (string, required)
- `sketch_name` (string, required)

### `alibre_status` (~24 tokens)

List every open Alibre Design session with kind, name and file path.

### `extrude_sketch` (~69 tokens)

Create an extruded boss from a sketch on the active part. Depth is in design units (typically mm).

Input parameters:

- `depth` (number, required): Extrusion depth
- `feature_name` (string, required): New feature name
- `sketch_name` (string, required): Sketch name (must be closed and valid)

### `list_sketches` (~18 tokens)

List the sketches on the active part.

### `save_active_session` (~24 tokens)

Save the active session in place (no path change). Useful after edits.

### `validate_sketch` (~68 tokens)

Validate a sketch for use in a feature. Reports IsClosed / IsFullyConstrained and any open ends, intersections, etc.

Input parameters:

- `as_path` (boolean): Treat the sketch as a path (e.g. for Sweep) instead of a profile
- `sketch_name` (string, required)

### `create_drawing` (~29 tokens)

Create a new empty drawing. Returns the new session's name.

Input parameters:

- `name` (string, required)

### `create_assembly` (~29 tokens)

Create a new empty assembly. Returns the new session's name.

Input parameters:

- `name` (string, required)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/stephensmitchell-alibreobjectmodel-mcp/alibreobjectmodel-mcp#diagnostics

## Score history

- 2026-08-20: 67
- 2026-08-19: 66
- 2026-08-18: 66
- 2026-08-17: 62
- 2026-08-16: 62
- 2026-08-15: 62
- 2026-08-14: 62
- 2026-08-13: 62
- 2026-08-12: 62
- 2026-08-11: 62

## Links

- NuGet package: https://www.nuget.org/packages/AlibreObjectModel.Mcp
- Socket report: https://socket.dev/nuget/package/AlibreObjectModel.Mcp
- Changelog RSS feed: https://verifymcp.io/servers/stephensmitchell-alibreobjectmodel-mcp/alibreobjectmodel-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/stephensmitchell-alibreobjectmodel-mcp/alibreobjectmodel-mcp.json
- HTML version of this page: https://verifymcp.io/servers/stephensmitchell-alibreobjectmodel-mcp/alibreobjectmodel-mcp