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

Annotations already declare readOnly/idempotent/closed-world, so safety is covered. The description adds real behavioral content beyond that: it discloses what the response contains (documentation starting point per product, plus content types), which is valuable precisely because there is no output schema.

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?

A single sentence with no filler, front-loaded on the resource and immediately listing what is returned. The phrasing 'with where each one's documentation starts' is slightly awkward but costs little.

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 no inputs and no output schema, the description adequately covers what an agent needs: what comes back and how those values are consumed downstream. It could be marginally stronger by framing the tool explicitly as the entry point before search/fetch.

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?

Zero parameters, so the baseline is 4. The description still earns credit by mapping returned ids to the 'product' and 'type' parameters used elsewhere, which helps an agent chain calls.

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 (List) and resources (products and content types), and it is clear this is a discovery/enumeration tool distinct from siblings like search, fetch and contents. Slightly muddled by the name saying only 'products' while the description and title cover content types too, but the intent is unambiguous.

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?

Usage is only implied through the parentheticals '(ids for the product parameter)' and '(ids for the type parameter)', which hint that the results feed other tools' arguments. There is no explicit statement of when to call this versus a sibling, nor any preconditions or exclusions.

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