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

Annotations already declare this as a mutating, destructive, idempotent, non-open-world operation, so the bar is low. The description still adds real value by disclosing a non-obvious side-effect boundary: changing contentLanguage does not translate existing content, and subscription/connected profiles are untouched. It does not explain what the destructiveHint=true covers, which keeps it out of 5 territory.

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 sentences, front-loaded with the action and followed by the exclusions; every clause carries information and nothing is redundant.

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 three-parameter mutation with no output schema and annotations covering the safety profile, the description covers purpose and scope well. It leaves gaps around brandId selection and what happens when optional fields are omitted, but nothing critical for correct invocation is missing.

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 carry the load. It maps 'rename' to name and contentLanguage to a 'supported Dalea locale', which adds meaning over the bare enum, but brandId is never mentioned and no format or requiredness guidance is given despite the schema listing zero required parameters.

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 the exact operations (rename, change contentLanguage) and the resource (brand profile), so an agent can distinguish it from get_brand_profile, list_brands, and update_brand_kit without opening a schema. It also defines the scope boundaries of the mutation in the same breath.

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 clear when-not guidance by excluding translation of existing content and changes to subscription or connected profiles, which prevents misinvocation. However, it never names an alternative tool for those excluded cases, so routing among siblings is only partly supported.

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