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

The description says the tool creates a poll and produces vote and private follow links, which implies an external state-changing outcome. This directly conflicts with the annotations declaring readOnlyHint=true and openWorldHint=false. Although the description usefully notes that chat photos are not passed and that a card is shown, the contradiction is serious.

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 front-loaded with the core action and then moves to use cases and important caveats about photo handling. It is somewhat long but every sentence contributes useful context.

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?

With two parameters and no output schema, the description explains what the tool creates, how the card works, the vote link, the private follow link, and how question and language behave. The main gap is the unresolved contradiction with the read-only annotation, but otherwise it provides enough context to invoke the tool.

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 both parameters are already well documented. The description reinforces that question is what friends are asked in the user's language and that language controls the PicJury page language, but it adds little beyond the schema descriptions.

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 states a specific verb and resource: it creates a PicJury photo poll where friends vote on 2–6 photos. It clearly distinguishes the resource and outcome, so an agent can understand what the tool does without opening the schema.

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?

It gives concrete use cases such as profile pictures, dating photos, outfits, logos, thumbnails, and product images, and explains that the user wants others to decide. It does not name alternatives, but the context for when to use it is clear.

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