Onshape MCP server

Read from the package source without running it. The installed server may list more.

• onshape_add_featurewrite action

  Post a hand-written BTM feature payload to a Part Studio. The escape hatch for feature types this server has

• onshape_assembly_add_featurewrite action

  Post a hand-written assembly feature payload — the escape hatch for mate types with no tool here.

• onshape_assembly_group

  Lock several instances together without individual mates.

• onshape_assembly_mass_properties

  Mass, volume, centroid and inertia for a whole assembly.

• onshape_assembly_mate

  Join two mate connectors with a mate: FASTENED, REVOLUTE, SLIDER, CYLINDRICAL, PLANAR, and so on. Each

• onshape_assembly_mate_connector

  Place an implicit mate connector on an instance by inference (CENTROID, TOP, ...). Its feature id is what

• onshape_assembly_relation

  Couple mates so one drives the other: GEAR (two revolutes, ratio), RACK_AND_PINION (a revolute and a slider,

• onshape_auth_status

  Report which Onshape credential is active, where it came from and whether it still works. Secrets are redacted.

• onshape_boolean

  Combine bodies: UNION, SUBTRACTION or INTERSECTION. Subtraction also needs the targets query.

• onshape_boolean_union

  Merge all modifiable solid bodies into one. The usual cleanup before exporting a single part.

• onshape_chamfer

  Bevel the selected edges. Selection works exactly as for onshape_fillet.

• onshape_circular_pattern

  Repeat geometry around an axis.

• onshape_clearance

  Minimum distance between two solid bodies in the same Part Studio, each named by part id or by the feature

• onshape_create_assemblywrite action

  Add an assembly tab to a workspace.

• onshape_create_documentwrite action

  Create a document. Free Onshape accounts may only create public documents, so pass public=true there. The

• onshape_create_drawingwrite action

  Create a drawing of a part, Part Studio or assembly. The source must be referenced by version — call

• onshape_create_feature_studiowrite action

  Add a Feature Studio tab for custom FeatureScript.

• onshape_create_part_studiowrite action

  Add a Part Studio tab to a workspace. The new element id is at result.response.id.

• onshape_create_sketchwrite action

  Add a sketch from a list of entities: lines, circles, rectangles and arcs. Use this when the single-shape

• onshape_create_versionwrite action

  Snapshot the workspace as an immutable version. Do this before restructuring an existing design: it is the

• onshape_delete_assembly_featurewrite action

  Remove a mate, mate connector, group or relation. Relations on a deleted mate stop solving.

• onshape_delete_documentwrite action

  Move a document to the trash. This affects the whole document, not a single tab.

• onshape_delete_elementwrite action

  Delete one element (tab) from a workspace.

• onshape_delete_featurewrite action

  Remove one feature from the tree. Features added after it may fail to regenerate.

• onshape_delete_instancewrite action

  Remove one instance from an assembly by its occurrence node id.

• onshape_draft

  Taper faces away from a neutral plane — the usual requirement for moulded or cast parts.

• onshape_encode_configuration

  Turn configuration parameter values into the encoded string other tools accept as `configuration`.

• onshape_eval_featurescriptwrite action

  Run a FeatureScript function against the Part Studio and return its decoded value. The general-purpose way

• onshape_export

  Export through Onshape's translation service: STEP, IGES, 3MF, PARASOLID, SOLIDWORKS and others. Slower than

• onshape_export_drawing

  Export a drawing as PDF (or DWG/DXF) through the translation service.

• onshape_export_stl

  Export the Part Studio as STL, for 3D printing. The file is in millimetres by default, which is what

• onshape_extrude

  Extrude the closed regions of a sketch into a solid. op=NEW makes a body, ADD merges into existing bodies,

• onshape_fillet

  Round the selected edges. Name the edges with one of: edges (ids), query (FeatureScript), feature (every edge

• onshape_find_circular_edges

  Circular edges (full circles and arcs), optionally only those matching a radius, with each one's centre in

• onshape_find_edges_by_feature

  Deterministic ids of the edges a given feature created, evaluated by Onshape.

• onshape_find_part_studios

  List the Part Studios in a workspace, optionally filtered by a substring of the name.

• onshape_get_assembly

  The assembly's instances, occurrences, mate features and mate connectors.

• onshape_get_assembly_features

  The mates, mate connectors, groups and relations defined in an assembly, with their feature ids, payloads

• onshape_get_body_details

  Bodies, faces and edges with their deterministic ids — the source for explicit edge selection.

• onshape_get_bom

  The assembly's BOM table.

• onshape_get_configuration

  The configuration parameters an element exposes, with their ids and allowed values.

• onshape_get_document

  Read one document's metadata, including its default workspace id.

• onshape_get_document_summary

  Document metadata plus every workspace and the elements (tabs) inside each — the fastest way to orient in an

• onshape_get_drawing_views

  The views placed on a drawing sheet.

• onshape_get_edges

  Every edge of every solid body, with its deterministic id, owning body, type, and for circles and arcs the

• onshape_get_elements

  List the elements (tabs) in a workspace: Part Studios, assemblies, drawings, Feature Studios.

• onshape_get_feature_specs

  The parameter ids, enum names and defaults Onshape expects for every feature type in this Part Studio. Read

• onshape_get_feature_studio

  The FeatureScript source of a Feature Studio.

• onshape_get_feature_studio_specs

  The feature specifications a Feature Studio defines, for calling its custom features.

• onshape_get_features

  The full feature tree with each feature's id, type, parameters and regeneration state. Large — prefer

• onshape_get_mate_values

  Where every mate currently sits: each degree of freedom's value, translations in inches and rotations in

• onshape_get_metadata

  Read the properties of an element, or of one part when part is given.

• onshape_get_parts

  The parts a Part Studio produces, with part ids for export and assembly insertion.

• onshape_get_sketch_info

  Entities and solved geometry for every sketch in a Part Studio, or for one sketch.

• onshape_get_thumbnail

  Save Onshape's stored thumbnail. Thumbnails are generated asynchronously and lag edits — prefer

• onshape_get_variables

  The variable table of a Part Studio: names, expressions and descriptions.

• onshape_get_workspaces

  List a document's workspaces (branches).

• onshape_hole

  Extrude a sketch as a cut (op=REMOVE). Sketch a circle first, then cut it through the body: end_type

• onshape_insert_instancewrite action

  Insert a part, a whole Part Studio or another assembly into an assembly. Insert from a version when pulling

• onshape_linear_pattern

  Repeat geometry along a direction, at a fixed spacing.

• onshape_list_documents

  List documents visible to the signed-in user, most recently modified first.

• onshape_list_versions

  List the immutable versions of a document, newest first.

• onshape_login

  Sign in to Onshape by opening a browser. method='api_key' (default) opens a local page that links to the

• onshape_login_status

  Wait for, and report on, the login started by onshape_login. Call this repeatedly while the user is in the

• onshape_logoutwrite action

  Delete the credential this server stored (keychain entry and config file). Credentials coming from

• onshape_mass_properties

  Volume, mass, centroid and inertia for the Part Studio's bodies.

• onshape_measure

  Body count, overall bounding box in inches and total volume. Use this to check a model matches its intended

• onshape_mirror

  Mirror parts, bodies or faces across a plane.

• onshape_offset_plane

  Add a construction plane offset from a default plane, a face, or another plane.

• onshape_request

  Make an authenticated request to an arbitrary Onshape REST endpoint, for anything the dedicated tools do not

• onshape_revolve

  Revolve a sketch profile around an axis. With no axis given, the sketch's own construction line is used

• onshape_rollback

  Set the rollback index so features after it are suppressed. Index 0 rolls back to before the first feature.

• onshape_search_documents

  Find documents by name. Search before creating, so repeated runs do not make duplicates.

• onshape_set_api_key

  Store an Onshape access key and secret key directly, without a browser. Use when the user already has a key

• onshape_set_feature_studio

  Replace the FeatureScript source of a Feature Studio. The whole file is overwritten.

• onshape_set_mate_values

  Drive top-level mates to new positions — turn a revolute, slide a slider — and read them back; relations

• onshape_set_metadatawrite action

  Write properties such as part number, description or material. Only editable properties are accepted; read

• onshape_set_variablewrite action

  Create or update a variable. Feature tools can then reference it by name (depth_variable, radius_variable,

• onshape_shaded_view

  Render the element server-side and return the image. Unlike a thumbnail this is generated on demand, so it

• onshape_shell

  Hollow the body out to a wall thickness, removing the selected faces to open it.

• onshape_sketch_candy_cane_path

  Add a sketch of a straight stem joined to a hooked arc, approximated by segments — a ready-made path for

• onshape_sketch_circle

  Add a sketch holding one circle.

• onshape_sketch_circle_axis

  Add a sketch with a circle profile and a construction line. onshape_revolve spins the profile around that

• onshape_sketch_line

  Add a sketch holding one line segment. A line alone encloses no region, so it cannot be extruded.

• onshape_sketch_rectangle

  Add a sketch holding one closed rectangle, ready to extrude. Corners are opposite, in inches.

• onshape_sweep

  Sweep the closed regions of one sketch along the edges of another.

• onshape_thicken

  Give a sketch region a wall thickness instead of a solid depth.

• onshape_thumbnail_info

  The thumbnail sizes Onshape has rendered for this element, with their hrefs.

• onshape_transform_instance

  Apply a 4x4 row-major transform (16 numbers, metres) to the given occurrence paths.

• onshape_update_assembly_featurewrite action

  Replace an assembly feature's payload — a mate's type, connectors or limits, a relation's ratio. Post the

• onshape_update_documentwrite action

  Change a document's name or description.

• onshape_update_featurewrite action

  Replace an existing feature's payload, e.g. to change a dimension. Post the whole feature JSON.

• onshape_validate_part_studio

  Count parts and bodies, and fail when the counts do not match the expectations you pass. A cheap regression

• Code scan49 source files scanned25/25
• –Live reliabilityno gateway calls yet and no remote to proben/a
• –Tool poisoningtools not inspected (local package is not executed); not countedn/a
• Auth qualitystatic API keys via environment variables6/15
• Maintenancelast push 1 days ago15/15
• Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Safety score

83/100

higher than 60% of 1,299 Productivity servers

Tools

93

the typical Productivity server has 7

Tools that change things

24%

typical: 0%. Fewer write tools means less an agent can break

GitHub stars

5

more than 70% of 854 Productivity servers

Downloads a week

642

more than 86% of 427 Productivity servers with a package

Onshape: common questions

Is Onshape MCP server safe?

Mostly: it is graded B (83/100). Read the Onshape safety report

How do I install Onshape?

It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.

Does Onshape need an API key?

Yes. The registry entry asks for ONSHAPE_ACCESS_KEY, ONSHAPE_SECRET_KEY.

Is Onshape maintained?

The last commit was 3 days ago (2026-11-01). The latest release is v0.3.0.

What can I use instead of Onshape?

Servers from other publishers that do the same job: Scumble MCP server, Argent MCP server and gflow-cli MCP server.

How does Onshape compare with other Productivity MCP servers?

safety score 83/100 (higher than 60% of 1,299 Productivity servers); tools 93 (the typical Productivity server has 7); tools that change things 24% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.