plasticity_create_printed_thread_calibration_set

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

Annotations already declare readOnly=false and destructive=true, so the write/mutation nature is covered. The description adds real domain behavior beyond that: the result stays 'unqualified until the specimens are physically printed and tested' and is not ISO metric hardware despite M5-style naming. It does not explain what existing model state is altered, so it falls short of a 5.

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?

Three tightly packed sentences with the create action front-loaded and the qualification caveat at the end. No filler sentences. It is dense technical prose, which is acceptable given the domain, though the second and third sentences carry a lot of implied context.

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 16-required-parameter, nested-object, no-output-schema tool, the description explains intent but leaves all critical geometry and process parameter semantics undocumented (0% schema coverage). An agent still lacks the information needed to populate axis, directions, samples, or the process fingerprint fields.

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?

There are 21 parameters with 0% schema description coverage, so the description carries the full burden. It gestures at categories (screw, nuts, profile clearance, printer/material/slicing profile/orientation) but never maps meaning to any named parameter such as pitchMm, threadDepthMm, axis, flatNormalDirection, or the samples array. An agent cannot infer formats or units from the text.

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 states a specific verb and resource: it creates one custom rounded-print-v1 hex screw plus 2-8 hex nuts with unique normal profile clearances. This distinguishes it from the plain create_printed_hex_screw / _nut / _pair siblings by emphasizing the calibration-ladder intent. It is clear, though it does not name those siblings explicitly.

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?

It gives a clear when-to-use directive: run this clearance ladder 'before choosing the working fit for a printer, material, slicing profile, and orientation.' This positions it correctly in the qualification workflow. It stops short of naming alternative tools (e.g. record/match_printed_thread_qualification) or explicit when-not-to-use conditions.

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