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hashbolic

FreeCAD MCP for Codex

by hashbolic

import_stl

Import an STL mesh into a FreeCAD document from a given file path, with optional naming and document selection.

Instructions

Import an STL mesh into the target document.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameNo
doc_nameNo
file_pathYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

With no annotations provided, the description alone must disclose behavioral traits. It indicates an import that affects a document, but does not state whether the target document must already exist or be open, what objects are created, or whether existing data is affected. This is a meaningful transparency gap for a mutation-like operation.

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, front-loaded sentence with no filler or repetition. It is concise to the point of being sparse, but it is well-structured for a simple operation.

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?

The tool has no annotations, low schema coverage, and several sibling tools with similar naming. The description does not explain how the target document is selected, whether an open document is required, or what happens on import. An agent could not reliably call this tool without additional documentation.

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

Parameters2/5

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

Schema description coverage is 0%, so the description must compensate by explaining parameter intent. It only hints at 'target document' and 'STL mesh'; it does not clarify the roles of file_path, doc_name, or name. The description adds minimal meaning beyond the raw schema.

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

Purpose5/5

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

The description states a specific verb ('Import'), a specific resource ('STL mesh'), and a destination ('target document'). This clearly differentiates it from import_step and export_stl, which are the most similar siblings.

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

Usage Guidelines3/5

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

The description implies the tool is used for importing STL files, but it does not explicitly state when to choose it over import_step or export_stl. The usage context is inferable from 'STL', but no exclusions or alternatives are mentioned.

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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