SaveProfilePictureInfo

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

With no annotations, the description carries full burden. It only states 'Change user picture information', implying a mutable operation, but provides no details on authorization, side effects, reversibility, or response expectations.

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, front-loaded sentence, making it concise. However, it sacrifices completeness for brevity, which is acceptable for a simple tool.

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 has one nested parameter and no output schema or annotations, the description should provide more context about the expected body structure and return behavior. It fails to do so, leaving agents under-informed.

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% as the single parameter 'body' is described as 'Request body'. However, the description adds no further semantic meaning beyond implying it contains picture info. With high schema coverage, baseline 3 is appropriate despite the minimal added value.

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 'Change user picture information' clearly indicates the action (change) and the resource (user picture information), distinguishing it from the sibling 'GetProfilePictureInfo' which reads 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?

No guidance is provided on when to use this tool versus alternatives like 'SavePersonalInfo' or other profile-related tools. There are no prerequisites, exclusions, or context for appropriate usage.

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