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

Annotations already declare destructiveHint=true, so the bar is lower, yet the description still adds real value: the deletion is permanent and cascades to associated files, and confirmation is required. It stops short of saying whether the action is recoverable or what auth/permission level is needed.

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 the destructive consequence and the confirmation requirement front-loaded. Nothing is wasted and no padding.

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 destructive, single-target delete with an output schema (so return values needn't be described) and annotations covering the safety profile, the description is nearly sufficient. The missing piece is explicit routing to the archive alternative and any permission prerequisite.

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 0% for three required parameters, so the description carries the load. It only hints at the 'confirmed' boolean via 'Requires explicit confirmation'; vehicleId and modificationId are never explained, though their names are self-describing.

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 gives a specific verb and resource ('Permanently delete a vehicle modification') plus the side effect on 'its files'. It does not name archive_vehicle_modification as the non-destructive alternative, so the distinction from the siblings is implied by 'Permanently' rather than stated.

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 states a prerequisite ('Requires explicit confirmation'), which tells the agent the call needs a confirmation flag, but gives no when-to-use guidance relative to archive_vehicle_modification or update_vehicle_modification. Usage is only implied.

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