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

The description states a read-only listing operation, consistent with the readOnlyHint=true and idempotentHint=true annotations. It does not add behavioral details beyond the annotations (e.g., how templates are ordered or whether they are paginated), but it does clarify the scope as 'predefined V2' templates.

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, direct sentence with no redundant wording or repetition of the tool name. Every word contributes to the meaning, and it is fully front-loaded.

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 no-parameter, read-only listing tool with an output schema present, the description fully conveys the tool's function. There is no ambiguity about what the tool does or when it might be used, and the output schema removes the need to describe return values.

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?

The input schema has zero properties, so there are no parameters to explain. The description correctly avoids mentioning parameters, and with 100% schema coverage, this 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 uses the specific verb 'List' and clearly identifies the resource as 'predefined AI photo Background Change V2 templates.' This immediately distinguishes it from the related AI-Photo-Background-Change tool and other template-listing tools like AI-Avatar-Generator-Templates, even without explicitly naming them.

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 intended use case is implied by the name and description: list templates for AI photo background change. However, there is no explicit guidance on when to choose this over sibling template tools (e.g., AI-Studio-Generator-Templates) or any mention of exclusions or prerequisites.

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