activate_subscription_offer

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

Without annotations, the description carries full behavioral burden. It discloses the effect (making the offer available) and the read-only restriction, but does not explain permissions, reversibility, or what happens if the offer is already active. This is modest but not comprehensive transparency.

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 that get straight to the point: what the tool does and the read-only limitation. No filler or redundant restatement.

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?

With a clear output schema present, no return-value description is necessary. The write purpose, read-only caveat, and schema-documented parameters make the description sufficiently complete for a straightforward activation operation, though sibling comparison could be richer.

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 parameters are fully documented in the schema. The description adds no additional meaning about parameters, so the baseline 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 uses a specific verb and resource: "Activate a subscription offer, making it available to eligible subscribers." This clearly distinguishes it from sibling tools like deactivate_subscription_offer and activate_base_plan.

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 implies the tool is used when an activation action is needed, and it notes it is disabled in read-only mode. However, it does not explicitly state when to prefer this over alternatives or mention any prerequisites or consequences for already-active offers.

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