Onshape MCP Server
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- AlicenseAqualityBmaintenanceEnables AI assistants to drive Onshape CAD with 87 tools for documents, part studios, sketching, solid features, assemblies, drawings, measurement, and export, including zero-configuration browser sign-in.93707 npm5MIT
- FlicenseNot gradedqualityDmaintenanceEnables programmatic CAD modeling with Onshape through document discovery, parametric sketching, feature management, and gear creation.-
- AlicenseBqualityBmaintenanceEnables AI assistants to drive CAD workflows through 87 tools for documents, part studios, sketching, solid features, assemblies, drawings, measurement, rendering, and export. It supports zero-config browser sign-in and secure credential storage.87707 npmMIT
- AlicenseBqualityCmaintenanceEnables OpenAI Codex to drive real Onshape parametric CAD via 69 tools for documents, sketches, features, assemblies, parametric updates, FeatureScript, vision, and export.69MIT
- AlicenseNot gradedqualityCmaintenanceEnables Claude to create and modify real, editable Onshape CAD models through the Onshape REST API, covering parametric sketches, solid features, configurations, assemblies with mates and motion tests, interference checks, FeatureScript custom features, versions/branches, and import/export.MIT
- AlicenseNot gradedqualityCmaintenanceEnables Claude Code to drive OnShape CAD through the REST API for parametric modeling, FeatureScript queries, and STL export/verification.MIT
TDQS
Scored across 48 tools
Most tools map cleanly to a distinct resource and action, and the create/get/delete/set verbs make selection straightforward. However, list_documents and search_documents overlap in purpose, and get_document vs get_document_summary (plus get_elements) could cause an agent to pick the wrong one.
All tool names use snake_case and nearly all follow a verb_noun pattern: create_*, get_*, list_*, set_*, delete_*, export_*. Even with 48 tools, the naming convention is highly predictable; exceptions like add_assembly_instance or eval_featurescript still fit the verb-first style.
48 tools is well beyond the 25+ threshold and feels over-fragmented for an MCP surface. Several sets, such as create_sketch_line/circle/arc/rectangle and the four mate creators, could be consolidated into parameterized operations without losing clarity.
The server covers document discovery, part studio feature creation, assembly construction, mates, export, and screenshots—so the core CAD workflow is present. However, there are notable lifecycle gaps: no update or delete for documents, no removal of assembly instances, and no way to edit existing features besides deleting them.