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 conveys that deletion happens but does not mention irreversibility, effects on related data, or what happens if the slug is already expired or nonexistent. 'Before it expires' hints at a temporal constraint but does not explain it.

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 no filler; the verb and object are front-loaded, and the temporal qualifier is brief. It is minimal but readable and appropriately sized for a one-parameter deletion 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?

For a simple one-parameter tool with an output schema, this is minimally sufficient to invoke, but it lacks important context about destructive effects and expiration behavior. The description does not fully cover what an agent should expect when deleting or when deletion is no longer possible.

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%, and the single parameter 'slug' is documented in the schema as 'The shortlink slug to delete.' The tool description adds no extra meaning beyond the schema, so the 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 a specific verb ('Delete') and resource ('a shortlink'), and is easily distinguished from the sibling tools create_shortlink, resolve_shortlink, and shortlink_status. The phrase 'before it expires' adds a scoping constraint without obscuring the core 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?

The description gives no explicit guidance on when to use this tool versus alternatives, and there are no exclusions or conditions provided. The intended use is only implied by the tool name and the word 'Delete', not stated.

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