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

Annotations already declare destructiveHint=true and idempotentHint=true, but the description goes further: it names exactly what is erased (the record and the video file in Tutorializer storage) and states the recovery cost (re-upload or re-render). That consequence detail is precisely what an agent needs before committing a destructive call.

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?

Three short sentences, front-loaded with the trigger, then the return value and consequences, then the scope exclusion. No filler and nothing buried.

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?

An output schema exists, and the description still supplies the non-schema-critical facts: irreversibility, the storage-level effect, and the boundary against delete_tutorial. For a one-parameter destructive tool, nothing an agent needs 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?

Schema description coverage is 100% for the single videoId parameter, so the schema already carries the meaning. The description adds no format, constraint, or ID-source detail beyond the schema, so the 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 a precisely scoped resource: 'one rendered tutorial video'. It explicitly distinguishes itself from the sibling that deletes a whole tutorial, so an agent can route correctly without opening either schema.

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?

Gives an explicit trigger ('Use this when someone wants one rendered tutorial video permanently deleted') and an explicit exclusion ('Not for deleting the whole tutorial'). The alternative is described rather than named (delete_tutorial), so it falls just short of the fully explicit 5.

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