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

The destructiveHint=true annotation already flags this as a mutating operation, so the description only needed to add context such as reversibility (is the key recoverable via gumroad_enable_license?), auth requirements, or side effects on existing licensees. Instead it adds only the REST verb/path, which duplicates the operation name and conveys no behavioral trait beyond the annotation.

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 short sentences, front-loaded with the action, with no padding or redundancy. The trailing REST endpoint reference is mildly non-essential metadata but costs only a few words.

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 two-parameter destructive tool with no output schema, the essentials are present, but the description omits the practical context an agent needs: whether the disable is reversible and which sibling to use to restore a key. Given the destructive nature, this is a meaningful gap.

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 the schema already documents both product_id and license_key adequately. The description contributes no additional parameter meaning (no format hints, no constraints), which is the expected baseline when the schema does the heavy lifting.

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 (disable) and resource (a product's license key), making the action unambiguous and clearly distinct from read siblings like gumroad_verify_license. It does not, however, contrast itself with the obvious sibling gumroad_disable_product or name the inverse operation.

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?

There is no when-to-use guidance, no prerequisites, and no named alternative. An agent must infer that enabling is handled by gumroad_enable_license and that product-level disabling is a different tool, without any explicit routing from the description.

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