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

Annotations already declare readOnlyHint and openWorldHint=false; the description adds the useful clarification that it is GET-only and that 'nothing is rendered', telling the agent no image generation side effect occurs. It does not cover failure modes such as a model with no saved figures, keeping it 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?

Front-loaded with the core verb and resource, and every clause enumerates a distinct category of returnable image, so the length is earned. The single long sentence with nested parentheticals is dense but not padded.

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?

There is no output schema, so the description carries the burden of explaining the return value, and it does so by listing the image categories and key concepts. The exact key string format remains unstated, leaving a small gap for an agent that must construct keys, but the structural picture is sufficient.

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 tool has zero parameters, so the baseline is 4. The description compensates by describing the returned key space in detail (iso/plan/front/side views, per-static-case loads, /db/UFIG figures, per-case/combination/stage diagram components Fx…Mw), which is more than the empty schema provides.

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?

States a specific verb and resource — lists the CIVIL NX pictures the Model Report can carry, with their keys — and enumerates exactly what kinds of images appear (FE views, load figures, /db/UFIG figures, beam diagrams). It also distinguishes itself from the sibling model_report_export by positioning itself as the catalogue that export consumes.

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?

Explicitly routes the agent: 'Pick from them with model_report_export images' names the alternative tool and the follow-up action. It implies the intended flow (discover keys here, then export) but does not state any exclusion such as when not to call it.

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