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

The description says 'update' but does not disclose whether the PUT performs a full replacement or partial update, what the response looks like, or any side effects. Annotations indicate non-idempotent and non-destructive, but the description adds no behavioral context beyond the verb. The existence of body/query override parameters with openWorldHint is not explained.

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 sentence of 13 words, making it concise. However, it is under-informative for a complex mutation tool with 16 parameters. It front-loads the endpoint and action but sacrifices necessary details. A slightly longer description could greatly improve clarity without being verbose.

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?

Given the tool complexity (16 parameters, no output schema, mutation with idempotency key and open-world hints), the description is inadequate. It does not explain the full set of updatable fields, required parameters like idempotency_key, the behavior of body/query overrides, or how this tool relates to similar sibling tools. The missing information could lead to incorrect invocations.

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?

With only 19% schema description coverage, the description should compensate by explaining multiple parameters. It only mentions three example fields (brand_voice, writing_style, target_audience) and omits 13 other parameters including the required idempotency_key, workspace_id usage note, and enum values. The description adds minimal value beyond the 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 clearly states the action (update) and resource (workspace brand profile), including the HTTP method and endpoint. It lists example fields (brand_voice, writing_style, target_audience) which distinguish this from related tools like get_brand_profile (read) and update_workspace (different resource).

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 description gives no guidance on when to use this tool versus alternatives (e.g., update_workspace) or what prerequisites are needed. It does not mention that workspace_id may be required for some operations (from schema note) or that idempotency_key is mandatory. No exclusion criteria or context for selection.

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