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

No annotations are provided, so the description carries the burden well: it discloses the non-destructive side effect on underlying transactions, the pending-only precondition, and the required auth scope. This is solid behavioral context for a mutation tool, though it lacks details on return value or reversibility.

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?

Three short sentences, front-loaded with the action and effect, followed by constraints and scopes. 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 no output schema and one simple parameter, the description provides sufficient context: purpose, side effects, precondition, and required scope. Only minor gaps such as error behavior or return format remain, which are acceptable here.

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 coverage is 100%, so the schema already fully documents candidateId. The description adds no parameter-level detail, so baseline 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?

States a specific verb (dismiss) and resource (pending subscription candidate) with the observable effect on the candidate list. Distinguishes from sibling tools like delete_subscription (permanent) and detect_subscription_candidates.

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?

Clearly implies usage for pending candidates only ('Only pending candidates can be dismissed') and notes non-destructive relationship to transactions. Does not explicitly name alternatives (e.g., delete_subscription), but the constraint provides good context.

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