play_upload_images

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

With no annotations, the description carries the full behavioral burden, but it only restates that the tool uploads images. It does not disclose side effects like replacing current assets, whether uploads are immediately published, required permissions, or failure behavior. This is a minimal improvement over no description.

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 extremely short and free of filler, but it is under-specified rather than genuinely concise. For a tool with five parameters and no schema descriptions, one sentence is insufficient and provides no structure or guidance.

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 five parameters, two required, zero schema description coverage, and no output schema, this description is far from complete. It does not explain file format expectations, how replaceAll behaves, why packageName is needed, or what language refers to, so an agent cannot reliably construct a correct call.

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 0%, so the description must compensate, but it only hints at possible values for imageType (icon, feature graphic, screenshots). It provides no meaning for the required files parameter or for language, replaceAll, and packageName, leaving the agent largely in the dark.

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 names a specific action (upload) and a specific resource (icon, feature graphic, or screenshots), which clearly distinguishes it from sibling tools about permissions, reviews, publishing, or promotions. It is not merely restating the tool name, though it could more explicitly state that the upload targets a Play Store listing.

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?

There is no guidance about when to use this tool versus alternatives such as play_update_listing or play_publish. It does not mention prerequisites, context, or exclusion cases, so an agent must infer usage from the name alone.

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