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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so safety is covered. The description adds genuinely useful context beyond that: the taxonomy of slot types, that partner slots carry their own picture, and the failure mode (an unfilled slot shows another brand's mark, not emptiness). It doesn't describe return shape or pagination, but for a read tool this is solid.

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?

Two sentences, front-loaded with the enumeration of what is returned, followed by the purpose. The closing flourish ("it looks like somebody else's brand") is colorful but does convey the failure mode, so it earns its place; the first sentence is dense but not padded.

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?

There is no output schema, so the description carries the burden of describing what comes back, and it does so reasonably well by naming slot categories and the band/ownership attributes. It omits the projectId requirement and any sense of the returned structure's shape, leaving a small gap for an agent deciding how to consume the result.

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% and the description never mentions projectId or what it scopes. The single parameter is self-explanatory by name and convention across sibling tools, which keeps this at minimum-viable rather than worse, but the description contributes nothing to parameter meaning.

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 concrete resource (logo slots) and enumerates exactly what is returned: site slots (navbar, footer, coming-soon/404) with their band, plus partner/client logo slots. It is clearly a read operation, implicitly the counterpart to uichemy_set_logo, but it never names that sibling or any other to differentiate itself explicitly.

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?

"Use it to check that no slot is still showing the template's built-in mark or a placeholder from the image library" gives a clear, actionable trigger for calling the tool. It stops short of naming alternatives (e.g. set_logo for fixing a bad slot) or stating when not to use it.

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