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

With readOnlyHint/openWorldHint already covering the safety profile, the description adds genuinely useful behavior: the storefront URL is fixed server-side (so no URL parameter exists) and empty result pages return 200 with an empty array. It omits any rate-limit or pagination-exhaustion behavior, but the added context is above the annotation baseline.

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?

Front-loaded with purpose and scope, then edge cases and routing; every sentence carries information. The limit/page sentences duplicate schema text, which is the only waste.

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?

An output schema exists, so return-value explanation is unnecessary, and the description still covers the fixed URL, empty-page semantics, pagination bounds, and sibling routing. Nothing needed to invoke it correctly is missing.

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% and the description merely restates the same defaults and maximum for limit and page ('Default 50, maximum 250', 'default 1'). It adds no format or edge-case meaning beyond what the schema already documents, 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?

States a specific verb and resource ('Returns normalized collections from Oh Polly') and pins the source domain. It also names the sibling ohpolly_collection_products, so an agent can distinguish 'list collections' from 'list collection products' without opening either 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 explicitly routes the agent to ohpolly_collection_products for product listings, which is clear alternative guidance. It stops short of stating when this tool is the wrong choice or listing prerequisites, so it is strong context rather than full when/when-not coverage.

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