apply_v_belt_grooves

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

With no annotations, the description carries the behavioral burden; 'Preflight or cut' usefully exposes two modes (non-committing preflight vs committing cut) and the single-body/global-X restriction. However, it does not disclose that execution writes to the document, the role of confirm_write/execute, or what features (rotational cut, fillets) are produced.

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?

A single front-loaded sentence with no filler; every word adds scoping information (preflight vs cut, previewed, one body, global-X).

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 complex nested request with no output schema and no annotations, the one-line description is insufficient. It omits how to trigger the preflight vs cut mode, the required document target/profile inputs, and the relationship to preview_v_belt_groove; an agent would need to reverse-engineer the large schema to use it correctly.

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?

Schema description coverage is 0%, so the description must compensate, but it mentions no concrete parameters. The only added semantic is 'one global-X rotational body', which clarifies the target contract (axis/body_count) in plain language; execute, confirm_write, profile, and document_id behavior are left entirely to the large nested schema.

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 names a specific action ('Preflight or cut') and resource ('previewed V-grooves') plus a clear target scope ('one global-X rotational body'), which matches the schema's axis='global_x' and body_count=1 constraints. This distinguishes it from the preview_v_belt_groove sibling (preview only) and apply_poly_v_grooves (poly-V, not V-belt).

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 phrase 'previewed V-grooves' implies the tool should be used after a preview operation, and 'one global-X rotational body' scopes valid targets, but no alternative tools or explicit when-not-to-use conditions are named. The intended workflow is inferable rather than stated.

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