app_clip_default_experiences__update

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

Annotations already declare readOnlyHint=false, idempotentHint=true, and destructiveHint=false. The description adds only the endpoint and the generic update verb, which is already implied by the tool name. It does not disclose any additional behavioral traits such as authentication requirements or effects on related resources.

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 consists of one concise sentence plus the endpoint. It front-loads the core purpose with no wasted words or redundant 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?

The description is minimal but adequate for a simple update operation. The input schema provides detailed nested structure for attributes and relationships, and there is no output schema. However, the description does not summarize the updateable fields or any required relationship updates, which would be helpful for an agent.

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 coverage is 100%, with descriptions for 'id' (ID from the matching list call) and 'body' (JSON:API request body referencing Apple schema). The description provides no additional parameter context beyond the schema, which is sufficiently detailed with nested attributes and relationships. Baseline 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 'Update an App Clip default experience' with the specific PATCH endpoint. This unambiguously identifies the resource and action, distinguishing it from create, delete, and get siblings for the same 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 implies the tool is for modifying an existing App Clip default experience but does not explicitly state when to use it over create or delete, nor does it mention prerequisites like having an existing ID from a list call. No alternatives are referenced.

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