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

The annotations already flag destructiveHint=true, and the description adds valuable context beyond that: 'unpublish' and 'can no longer be sold,' which clarifies the exact consequence. It does not mention reversibility or auth requirements, but the annotation plus this effect description is sufficient for a simple destructive action.

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?

The description is a single, front-loaded sentence that combines the action, effect, and API endpoint without any filler. Every word contributes to understanding the tool's function and context.

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 simple tool with one parameter, a destructive annotation, and no output schema, the description is complete. It explains what happens (product becomes unsellable), how it relates to the API, and leaves no critical gaps. The sibling context and annotations corroborate the sufficiency.

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?

The schema already describes the 'id' parameter with 100% coverage ('The product id to disable.'). The description does not add extra parameter details, but with such high schema coverage, this is adequate. The baseline of 3 applies as the schema carries the parameter semantics.

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 clearly states the tool's action ('Disable (unpublish) a product') and its effect ('so it can no longer be sold'). It distinguishes this from sibling tools like gumroad_enable_product and gumroad_get_product by specifying the exact behavior and outcome, and even provides the REST endpoint for additional clarity.

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?

The description implies the use case: when a product should no longer be sold. It provides clear context for when to invoke this tool, though it does not explicitly mention alternatives or exclusions (e.g., 'use enable_product to reverse'). The effect is clear enough that an agent can decide correctly.

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