promotions_generate_coupons

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

Without annotations, the description must disclose behavioral traits. It only states the basic operation, omitting details like whether it returns generated codes, requires the rule to be active, or has any side effects.

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?

One sentence, no extraneous information. Could be improved by front-loading key constraints, but overall efficiently conveys the core purpose.

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 generation tool, the description is too minimal. It does not specify input requirements, output format, or any side effects (e.g., database writes). Incomplete given the complexity of coupon generation.

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 sole parameter 'params' is a generic JSON object with additionalProperties allowed; the description adds no clarification on expected keys (e.g., rule_id, quantity, prefix). Schema coverage is 100% but the description is uninformative.

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 action (generate), resource (coupon codes), and context (for an existing cart price rule). It differentiates from sibling tools like promotions_export_coupons which export existing coupons.

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?

No guidance on when to use this tool versus alternatives. Does not mention prerequisites (e.g., rule must exist) or when not to use it. Lacks context about typical workflow steps.

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