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 largely covered. The description adds two useful facts — the effect is permanent (not soft-delete) and a confirmation step is required — but never says what else is affected (e.g., vehicles referencing that make) or whether the operation can fail on in-use records.

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?

One sentence, front-loaded with the destructive verb and resource, with no filler. The permanence warning precedes the confirmation caveat, which is the right ordering.

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, so return values need no explanation, and the destructive/irreversible semantics are signaled. However, for a high-impact delete with 0% schema description coverage, the definition omits cascade effects, permission requirements, and the failure mode of confirmed=false.

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 0%, so the description must carry the load. It does map "custom vehicle make" to the id parameter and "explicit confirmation" to the confirmed boolean, which is real added meaning, but it never clarifies the id format/source or what an unconfirmed call returns or does.

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?

States a specific verb (delete), resource (custom vehicle make), and irreversibility modifier (permanently). It is cleanly separable from create_vehicle_make and update_vehicle_make, the nearest siblings, by verb alone.

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?

"After explicit confirmation" implies a precondition, but there is no guidance on when deletion is appropriate versus a non-destructive alternative (e.g., archive_vehicle exists in the sibling set) or what happens if the caller is unsure. Usage is implied rather than stated.

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