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

Annotations already declare destructiveHint=true and readOnlyHint=false, so the safety profile is covered. The description adds value beyond them with the failure mode ('refused while it is being published') and the timing semantics ('now rather than at its expiry'). It stops short of saying whether the deletion is recoverable.

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, zero filler. The primary action and its timing distinction are front-loaded, with the refusal condition as a second, clearly separated clause.

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?

The one parameter, output schema, and annotation safety profile are all covered outside the description, and the description contributes the non-obvious precondition. The main omission is whether the deletion is permanent or recoverable, which matters for a destructive one-way operation.

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 single parameter is already documented in the schema as the video's `id` from list_videos. The description adds no additional param semantics, so baseline 3 applies.

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?

Specific verb (Delete) plus specific resource (an uploaded video), and it distinguishes itself from the implicit expiry-based removal by saying 'now rather than at its expiry.' An agent can tell this apart from delete_image/delete_page at a glance by resource.

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?

It gives concrete usage context ('e.g. the wrong file') and states a precondition ('Refused while it is being published'), which tells the agent when the call will fail. It does not name an explicit alternative tool, so it falls short of a 5.

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