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

Annotations already declare readOnlyHint=true, openWorldHint=false and destructiveHint=false, so 'Read-only' largely repeats structured data. It does add genuine context beyond annotations: the catalogue combines platform styles with this cabinet's own. It says nothing about limit defaults or result cap behavior.

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?

Compact, front-loaded fragments: contents first, then filter axes, then the creative_order.styles handoff. Dense but each clause carries information; only the trailing 'Read-only' is redundant with annotations.

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 read-only list tool with a safety-covering annotation set and no output schema, the description covers contents, filtering and downstream use adequately. The notable gap is that two of five optional parameters (lang, limit) are undocumented in both schema and description.

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; it explains that category, suits and a search word are filters, loosely mapping to category, suits and q. It leaves lang and limit entirely unexplained and does not explicitly equate 'search word' with q or say what lang changes.

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?

States a concrete resource and scope: a style catalogue of platform styles plus this cabinet's own, enumerating the fields returned (slug, name, category, suits, preview links). It is distinguishable from creative_list/creative_options by being a style vocabulary, though it never names the sibling it is not.

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?

Gives one real usage instruction — pass a slug in creative_order.styles — which ties it to the downstream ordering flow. It offers no explicit when-to-use/when-not versus siblings and no prerequisites, so guidance is implied rather than stated.

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