create_subscription_offer

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

No annotations are provided, so the description must carry the full burden of behavioral disclosure. It only notes that the tool is disabled in read-only mode, which is a useful constraint, but it does not explain side effects, permissions, or what happens on creation. It omits details such as whether the offer is immediately active or requires further activation.

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 primary purpose front-loaded. The second sentence adds a relevant constraint without unnecessary verbosity. No wasted 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?

Given the tool's complexity (nested 'offer' object, six parameters) and lack of annotations, the description is too sparse. It does not explain how a new subscription offer relates to a base plan or product, nor when to use this over patch_subscription_offer. The output schema covers return values, but the behavioral and usage context remains 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?

The input schema has 100% description coverage for all six parameters, so the schema already defines each parameter clearly. The description itself adds no parameter-level detail. Per the baseline for high schema coverage, a score of 3 is appropriate.

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 function: 'Create a new subscription offer.' This specific verb+resource phrase distinguishes it from sibling tools like patch_subscription_offer, delete_subscription_offer, and list_subscription_offers. The purpose is unambiguous.

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 provides no guidance on when to use this tool versus alternatives such as patch_subscription_offer or create_subscription. The only additional note, 'Disabled in read-only mode,' is an environmental constraint, not usage direction. There is no explicit or implicit comparison to siblings.

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