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

Annotations already declare readOnlyHint, idempotentHint, non-destructive and closed-world, so the safety profile is covered. The description adds real context beyond them: results are limited to 'stable' profiles, include supported controls, and deliberately omit provider/model identities — which tells the agent what it will and won't learn from the call.

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?

Two short sentences with zero filler, and the resource plus scope constraint are front-loaded. Nothing could be trimmed without losing information.

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?

With no output schema, the description does correctly hint at the return content (profiles plus supported controls) and notes the identity omission. But it leaves the required websiteId unexplained and doesn't clarify the shape of 'controls', leaving gaps for a call the agent must get right first time.

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%, yet the single required parameter websiteId is never explained in the description. The agent must assume it scopes the catalog to one website; nothing about format, source, or behavior when the website lacks profiles is given.

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 stable Cactal image profiles and their supported controls'), which is clearly distinct from the sibling mediaGeneration_generate. It stops short of naming the generate tool or stating the catalog-to-generate relationship, so it doesn't fully differentiate in prose.

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 explicit when-to-use guidance, no mention of how this relates to mediaGeneration_generate, and no stated prerequisite (e.g., that a websiteId must already exist). The discovery use case is only inferable from the word 'catalog' and the title.

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