subscription_offers_update

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

Annotations are absent, so the description must cover behavior. It only says 'Patch-update,' implying partial mutation, but fails to disclose whether the operation is idempotent, what happens on success/failure, permission requirements, or side effects. No output schema is provided, leaving the response format unclear.

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 a single sentence, which is concise but lacks detail. While front-loaded, it is too minimal to convey necessary context. Every word earns its place, but the description is under-specified for the complexity of the tool.

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 complexity (9 parameters, 5 required, nested objects, no output schema), the description is severely incomplete. It provides no guidance on parameter interactions, update semantics, or expected outcomes. The tool would be difficult to use correctly without external documentation.

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 only 22%, yet the description adds no meaning for any parameter. Critical fields like 'basePlanId', 'offerId', 'offer' (nested object), 'updateMask', 'regionsVersion', 'allowMissing', and 'latencyTolerance' remain undocumented. The agent cannot infer constraints or usage from the description alone.

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 'Patch-update an offer,' which identifies the action and resource but lacks specificity. Among siblings like subscription_offers_create, subscription_offers_batch_update, and subscription_offers_patch (not present), it does not differentiate patch from update or batch operations. The verb 'patch-update' is clear, but 'offer' could be confused with other offer types (e.g., one-time product offers) without context.

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 usage guidance provided. The description does not specify when to use this tool versus alternatives like subscription_offers_batch_update or subscription_offers_update (not shown but implied). No preconditions, prerequisites, or exclusions are mentioned.

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