FeatureScript

MCP tool from Onshape MCP by hedless

Evaluate FeatureScript expressions, get bounding boxes

How to use it

FeatureScript is exposed by the Onshape MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the FeatureScript tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.

Install Onshape MCP

$pip install -e .

FULL ONSHAPE MCP LISTING

Other tools in Onshape MCP (39)

add_assembly_instance

Add a part or sub-assembly instance to an assembly

align_instance_to_face

Align one instance flush against a face of another

check_assembly_interference

Check for overlapping/interfering parts using bounding box detection

create_assembly

Create a new Assembly in a document

create_boolean

Union, subtract, or intersect bodies by deterministic IDs

create_chamfer

Bevel edges by edge IDs with distance (supports variable references)

create_circular_pattern

Repeat features around an axis with count and angle spread

create_cylindrical_mate

Create a slide+rotate mate. First instance moves relative to second.

create_document

Create a new Onshape document

create_extrude

Extrude a sketch with depth, optional variable reference, and operation type

create_fastened_mate

Create a rigid (fastened) mate between two instances

create_fillet

Round edges by edge IDs with radius (supports variable references)

create_linear_pattern

Repeat features along an axis (X/Y/Z) with distance and count

create_mate_connector

Create an explicit mate connector on a face with offsets

create_part_studio

Create a new Part Studio in a document

create_revolute_mate

Create a rotational mate. First instance rotates relative to second.

create_revolve

Revolve a sketch around an axis (X/Y/Z) with angle and operation type

create_sketch_arc

Arc with center, radius, start angle, and end angle

create_sketch_circle

Circle with center point and radius

create_sketch_line

Line from start point to end point

create_sketch_rectangle

Rectangle with optional variable references for width/height

create_slider_mate

Create a linear motion mate. First instance slides relative to second.

create_thicken

Thicken a sketch into a solid with optional midplane/opposite direction

delete_feature

Delete a feature (mate, mate connector, etc.) from an assembly or Part Studio

find_part_studios

Find Part Studios with optional name filtering

get_assembly

Get assembly structure with instances and occurrences

get_assembly_features

Get all features with their state (OK/ERROR/SUPPRESSED)

get_assembly_positions

Get positions, sizes, and bounds of all instances (in inches)

get_body_details

Get face IDs, surface types, normals, and origins for all parts

get_document

Get detailed document information

get_document_summary

Get comprehensive summary with workspaces and elements

get_elements

Get all elements (Part Studios, Assemblies, BOMs) in a workspace

get_face_coordinate_system

Query the outward-facing coordinate system for a specific face

get_parts

Get all parts from a Part Studio

get_variables

Get all variables from a Part Studio variable table

list_documents

List documents with filtering and sorting

search_documents

Search documents by name or description

set_instance_position

Set absolute position (resets rotation). Fails on fixed instances.

transform_instance

Apply a relative transform (inches/degrees). Fails on fixed instances.