Batch Update Subscriptions

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

With no annotations, the description carries the full burden of behavioral disclosure. It only adds that the tool is disabled in read-only mode, which is useful, but it does not explain atomicity, partial-failure behavior, permissions, or side effects for a batch mutation operation.

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?

Two short sentences with no filler. The core purpose is front-loaded, and the read-only restriction is a relevant secondary note. Every sentence earns its place.

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 batch mutation with many closely related siblings, this description is incomplete: it omits when-to-use guidance, batch failure semantics, and request-size or atomicity considerations. The schema and output schema cover parameters and return values, but the selection and behavioral gaps remain.

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%, with package_name and requests already documented, including the UpdateSubscriptionRequest fields. The description adds no additional parameter-level meaning, so it meets the baseline without compensating further.

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 identifies the operation: updating multiple subscription products in a single call. This distinguishes it from single-subscription update tools and, through the phrase 'subscription products,' from offer/base-plan batch tools. It does not explicitly contrast siblings like patch_subscription, so it stops short of full differentiation.

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 is given about when to choose this tool over patch_subscription, batch_update_subscription_offers, or batch_update_base_plan_states. The only condition mentioned, 'Disabled in read-only mode,' is a mode restriction rather than a selection rule among alternatives.

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