app_clip_default_experience_localizations__update

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

Annotations already provide idempotentHint and destructiveHint, so the description adds the HTTP method PATCH but little else. It does not disclose whether the update is partial/full replacement, permission requirements, or side effects beyond what annotations cover.

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 two concise sentences, with no redundant information. The first sentence states the action, and the second gives the endpoint, making it highly efficient.

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?

The description, combined with schema and annotations, provides a functional picture: it updates a localization via PATCH, with only subtitle as an editable attribute (from schema). However, it does not mention expected return values or any caveats, which would be useful given there is no output schema.

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 the schema fully documents the 'id' and 'body' parameters, including that 'id' comes from a matching list call and the body structure. The description adds no additional parameter context, so baseline of 3 is appropriate.

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 tool updates an App Clip default experience localization, with a specific verb and resource. It distinguishes from sibling tools for create/delete/get on the same resource, and the PATCH endpoint adds specificity.

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?

No explicit guidance on when to use this tool versus alternatives like create/delete, or prerequisites. The verb 'Update' implies modifying an existing localization, but no context is given for when this is appropriate versus other related tools.

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