Cancel Purchase Option Offer

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

With no annotations, the description carries the burden of behavioral disclosure and does state the mutation ('Cancel') and the read-only restriction. It does not disclose consequences such as whether cancellation is irreversible, affects existing purchases, or is only valid for offers in certain states, so the behavioral picture is incomplete but not misleading.

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 two short sentences, with the core action and resource front-loaded and the read-only caveat placed second. Every sentence contributes useful information without redundancy.

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?

The description covers the basic operation and read-only constraint, and an output schema exists so return-value documentation is not required here. However, for a cancellation action among many offer-management siblings, it would benefit from clarifying how 'cancel' differs from 'deactivate' or 'delete' and whether any state or timing prerequisites apply.

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 input schema has 100% description coverage, with each parameter already explained as the relevant ID. The description adds no additional parameter semantics, but none are needed because the schema fields are self-explanatory in context.

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 states a specific action ('Cancel') and a specific resource ('a one-time product offer'), with an example ('pre-order offer') that clarifies the intended object. It distinguishes the tool from most siblings by naming the one-time product offer context, though it does not explicitly contrast with the similarly named deactivate_purchase_option_offer.

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 example '(e.g. a pre-order offer)' implies the intended use case, and the note 'Disabled in read-only mode' gives a mode restriction. However, there is no explicit guidance about when to use this tool instead of related offer-lifecycle tools like deactivate_purchase_option_offer or delete_purchase_option_offer, and no mention of preconditions such as offer state.

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