subscriptions_delete

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It does clearly state that the subscription will be 'permanently deleted' and mentions the success response (204 with no body), which adds some transparency. However, it does not disclose potential side effects (such as cascading effects) or permissions/authentication requirements. It also doesn't describe error cases or constraints (e.g., cannot delete non-existing subscription).

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 concise and well-structured: it gives the HTTP method and resource path, states the permanence, and mentions the success response. Each sentence serves a purpose with no redundancy. It is front-loaded with the core action, and there is no unnecessary verbosity.

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 that the tool has only two parameters fully described in the schema and no output schema, the description covers the essential aspects: the action, the resource, and the success response. However, it lacks guidance on error handling, preconditions, and potential side effects, which would be helpful for a destructive operation. Since there are no annotations, the description should provide more context about when to use this tool and what to expect on failure, which is missing.

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 input schema already provides descriptions for both parameters (project_id and subscription_id), and the schema description coverage is 100%. The description's mention of the endpoint path (`/projects/PROJECT_ID/subscriptions/SUBSCRIPTION_ID`) indirectly clarifies the role of the parameters, but it does not add additional detail beyond the schema. Therefore, a 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 clearly states the tool's purpose: to delete a subscription. It specifies the resource (subscription) and the action (delete). The statement 'The subscription will be permanently deleted' reinforces the destructive action, which distinguishes it from update or get operations among siblings.

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 implicitly conveys that this tool is for deleting a subscription, but it does not explicitly state when to use this tool versus alternatives. It does not mention that deletion is irreversible or any prerequisites. However, the tool's purpose is clear enough that an agent would likely use it when needing to remove a subscription.

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