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

Annotations only declare destructiveHint=true; the description adds substantial context beyond that: irreversibility, immediate URL unreachability, deletion of deployed files, and the confirm safeguard that returns an error rather than silently proceeding. This is exactly the extra behavioral detail the annotation bar asks for.

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 tight sentences, with the destructive warning bolded and front-loaded before the mechanics of confirm. No sentence is wasted.

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?

No output schema exists, and the description covers the error path and irreversibility well, which is the key information for a destructive tool. It does not describe the success response, but that is a minor gap against otherwise complete coverage.

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% so the baseline is 3, but the description adds meaning to confirm beyond the schema by describing the safeguard's runtime behavior (error returned when not passed). The other parameters are left entirely to the schema, which is acceptable given 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?

States a specific verb (permanently delete), resource (Hostsmith site), and scope (all deployed files), which cleanly separates it from the create/get/list siblings. An agent can identify the tool without opening the 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?

Explicitly states the precondition ('only call after explicit user confirmation') and the required confirm: true, plus the failure mode if omitted. It does not name an alternative, but no alternative delete operation exists among the siblings, so the routing guidance is effectively complete.

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