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hedless

Onshape MCP Server

by hedless

export_assembly

Export a CAD assembly to STL, STEP, or GLTF format for 3D printing, simulation, or sharing.

Instructions

Export an Assembly to STL, STEP, or other format

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
formatNoExport formatSTL
elementIdYesAssembly element ID
documentIdYesDocument ID
workspaceIdYesWorkspace ID
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, and the description does not disclose behavioral traits such as side effects, permissions, rate limits, or whether the operation is read-only. The description only states the action without any behavioral context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, concise sentence with no unnecessary words. However, it is slightly under-specified for the tool's complexity, but still efficient.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no output schema and 4 parameters, the description lacks completeness. It does not mention return value, success conditions, error handling, or any post-export effects.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the schema already documents all parameters. The description adds no additional meaning beyond the schema. Baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'Export' and resource 'Assembly', and mentions specific formats (STL, STEP, GLTF) from the enum. It distinguishes from sibling 'export_part_studio' by targeting assemblies. However, 'or other format' is slightly vague.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool vs alternatives like 'export_part_studio'. It does not specify prerequisites, context, or when not to use it.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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