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

With no annotations present, the description carries the full burden and does so well: it discloses the cascade to patron redemptions, that referencing chain steps silently become no-ops on unknown ids, and that orphaned references surface as Studio warnings. It stops short of stating reversibility (whether the delete can be undone) or the exact nature of the 'proof' requirement, which would complete the picture.

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-loads the action in the first sentence and then layers side effects, restriction, and caveats without padding. The middle sentence is dense with internal mechanics but each clause adds real behavioral information, so it earns its space.

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 values needn't be described, and for a no-annotation destructive tool the coverage of cascade effects, orphan handling, and the operator restriction is strong. The one real gap is the undocumented dpop_token parameter, which leaves the invocation contract incomplete.

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 0%, so the description must compensate but largely does not. coupon_id appears only incidentally in the chain-step discussion, and dpop_token is never mentioned; the phrase 'requires proof' gestures at it but gives no format or sourcing detail. An agent cannot tell from the text what to supply for the second parameter.

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+resource ('Delete a coupon') with unusual precision, and the cascade note clarifies the operation's blast radius. It does not, however, differentiate itself from close siblings like beesknees_forget_coupon or beesknees_update_coupon, leaving the agent to infer which edit/removal verb applies.

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 discloses a critical gating condition ('RESTRICTED to operator — requires proof'), which tells the agent when it is even permitted to call this. But it offers no guidance on when to delete vs. forget or update a coupon, so selection among the sibling removal/edit tools is left to inference.

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