expire_subscription_contract

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

With no annotations, the description carries the full burden of explaining behavior. It only states the action without disclosing effects such as whether the contract ends immediately, impacts billing, or is reversible. For a mutation tool, this is a significant gap in 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 a single sentence with zero wasted words, making it concise and front-loaded. However, it could include additional context without becoming verbose, so it is slightly above average but not exceptional.

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 lack of annotations, output schema, and clear explanation of side effects, the description is incomplete. It fails to communicate the state change, return value, or any prerequisite conditions, making it insufficient for an agent to understand the full impact of using the tool.

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 schema description covers 100% of the parameter (subscriptionContractId) with 'Subscription Contract ID to expire'. The description adds no further meaning, but baseline of 3 is appropriate because the schema already fully documents the parameter.

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 'Expire a subscription contract' uses a specific verb and resource, making the tool's purpose clear. It does not explicitly differentiate from siblings like cancel_subscription_contract or pause_subscription_contract, but the verb 'expire' is distinct enough to indicate a specific action.

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 provided on when to use this tool versus alternatives such as cancel, pause, or fail subscription contract. The description simply restates the action without any context, exclusions, or references to sibling tools.

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