Compute welded I-section properties

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety/idempotency profile is fully covered. The description adds that this is a pure geometric calculation from positive plate dimensions, but this largely restates the parameter domain rather than disclosing new behavior such as output units or determinism notes.

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 a single compact bilingual sentence and the computational purpose is front-loaded. It does redundantly list all four parameters that the schema already names, which is mild waste, but the overall size is appropriate.

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 four-parameter deterministic calculation tool, the description says what is computed and from which inputs, and an output schema exists to document the returned section properties. The main omission is sibling differentiation, but that is a usage-guidance gap rather than a correctness gap.

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 100%, so all four parameters (hw, tw, bf, tf) are already documented with physical meaning and mm units in the schema. The description repeats those same mappings without adding any new semantic detail, so the baseline 3 applies.

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+resource: compute section properties of a welded I-section from plate dimensions (mm). This distinguishes it from the welded-box and lookup siblings implicitly via 'welded I-section' and 'from plate dimensions,' but it never names an alternative tool to make the routing explicit.

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?

There is no when-to-use guidance and no mention of alternatives such as section_welded_box, section_lookup, or section_search. The only implied context is that the caller has four plate dimensions, which is prerequisite information rather than usage guidance.

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