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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds some behavioral context (that results can span products, collections, and queries, and that limit caps output), but says nothing about ordering, latency, or fallback behavior beyond what the schema and annotations provide.

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 tight clauses plus one routing sentence, with the core purpose front-loaded. Nothing is wasted, though the follow-up sentence could be trimmed slightly. Structure is clean and scannable.

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 an output schema present, the description need not explain return values, and annotations cover the safety profile; the remaining job is purpose and routing, which it handles. It is nearly complete for a simple 3-param read tool, with only the when-not-to-use case unstated.

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 all three parameters are already fully documented with defaults and ranges. The description restates the same facts ('types can include products, collections, or query suggestions'; 'limit caps results') without adding syntax, format, or edge-case meaning, so the baseline 3 applies.

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 uses a specific verb ('Fetch') plus a precise resource ('Cole Haan predictive-search suggestions'), immediately telling the agent this is a typeahead/autocomplete-style endpoint rather than a full catalog browse. It also names the sibling browse tools (colehaan_products, colehaan_collections), so it is distinguishable from other Cole Haan tools without opening a 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 clear routing guidance: use colehaan_products or colehaan_collections to 'browse returned matches,' which frames this tool as a precursor to browsing. However, it never states when NOT to use it or contrasts it with a full product search, so the guidance is directional but not exhaustive.

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