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

Annotations already declare destructiveHint=true, openWorldHint=true and readOnlyHint=false, so the safety profile is covered. The description adds the useful detail of what is destroyed (the server tied to a project) and the confirm gate, but says nothing about irreversibility, whether deletion is immediate or queued, or side effects on the project itself.

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?

Front-loads the DESTRUCTIVE warning and fits in one sentence plus a precondition. The trailing '[scope: write]' tag is redundant with the annotations and the DESTRUCTIVE prefix, a small amount of noise in an otherwise tight definition.

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?

A destructive, open-world operation with no output schema is described adequately for the call itself (required fields, confirmation, target resource). It leaves the agent without knowledge of what happens after the call—success signal, async behavior, or whether the project record is also affected—which matters most for irreversible tools.

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 both parameters are documented in the schema, including that confirm must be true and where project_id comes from. The description only restates the confirm requirement, adding no meaning beyond the schema, 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?

States a specific verb (delete) and a precise resource (the project server in the Hetzner account), which distinguishes it from cloudhosting_delete_project (removes the project) by resource. It never names the sibling explicitly, so differentiation is inferred from the nouns 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?

Gives the mandatory precondition (confirm=true) and flags the operation as destructive, which is implicit usage guidance. It does not say when to prefer this over cloudhosting_delete_project or cloudhosting_create_project, nor what to do first (e.g., list projects to obtain project_id).

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