add_step_file

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

The disclosure that the tool 'will update the JCAD document' indicates a mutating operation, and the instruction to first fetch the current design is useful context. However, it does not reveal whether the update is additive, destructive, or how failures are handled, which is important given the absence of annotations.

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

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

The description is short but begins with 'None,' which is noise. The warning about updating the document is useful, but the overall structure is poor and not well-formatted for an AI agent.

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

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

For a tool with six parameters and no output schema or annotations, the description is severely lacking. It only provides a warning and prerequisite, leaving out the tool's core functionality and parameter semantics.

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

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

The description makes no mention of any of the six parameters (jcad_path, path, name, position, rotation_axis, rotation_angle). With schema description coverage at 0%, the agent has no guidance on what these parameters mean or how to use them.

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

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

The description says 'Warning: This tool will update the JCAD document at the given jcad_path.' This does not state that the tool adds a STEP file; 'update' is generic and the resource is vague. The tool name suggests the purpose, but the description lacks a specific verb and resource.

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

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

The description provides a clear prerequisite: 'To understand the current state of the document, you MUST first use the get_current_cad_design tool.' However, it does not explain when to use this tool versus alternatives like add_box or add_cone, nor does it explicitly state that this is for importing STEP files.

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