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

Annotations already declare destructiveHint=true, idempotentHint=true and readOnlyHint=false, so the safety profile is covered. The description adds genuine context beyond that: the cleanup is irreversible, it stops runtime resources, and the project vanishes from the user-space list once the request is accepted. It stops short of saying what happens to attached domains/services or whether authorization scoping applies.

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 sentences, front-loaded with the action and followed immediately by the irreversible consequence. Every clause carries information; there is no filler.

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 tool with no output schema, the annotations cover safety and the description covers irreversibility and the post-condition. The remaining gap is parameter meaning (especially idempotency_key) and side effects on dependent resources.

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 two parameters, and the description never mentions project_id or idempotency_key. The idempotency_key in particular is non-obvious and its relationship to the idempotentHint annotation is left unexplained, so the description fails to compensate for the schema gap.

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 resource (project), and adds scope detail about runtime resources. It does not explicitly contrast with the sibling deletion tools (delete_service, delete_domain, delete_env_name), but the resource name is unambiguous enough to select correctly.

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?

There is no guidance on when to use this tool versus alternatives, no prerequisites (e.g., must the project be stopped first), and no warning about confirming with the user before an irreversible operation. The agent must infer everything.

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