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

Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is covered. The description adds genuine value beyond that by explaining the observable effect — the link stops redirecting immediately — which tells the agent the consequence is instant, not eventual.

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?

Two short sentences with zero filler: the action first, then the consequence and the caution. Nothing to trim and the most important warning is front-loaded.

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 one-parameter destructive tool with annotations and no output schema, the description supplies the key missing pieces: immediate effect and the instruction to confirm. It could note whether deletion is permanent or reversible, but nothing essential for correct invocation is absent.

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% and the sole parameter 'slug' is documented in the schema as the last part of the link URL, so the schema carries the load. The description adds nothing about the parameter, which is the expected baseline for full coverage.

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 uses a specific verb and resource ("Delete a link"), making the operation unambiguous against siblings like create_link or update_link. It stops short of an explicit contrast with siblings, but the name plus verb leave no ambiguity.

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?

"Confirm with the user first" gives one real invocation precondition, which is useful for a destructive action. However, it never states when to delete versus update_link (e.g., disable vs. remove) or what happens on an invalid/unknown slug.

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