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

Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is structured. The description adds genuinely non-redundant context: that containers stop and the project goes offline, and that the state change is reversible. It does not cover what happens to in-flight traffic, whether a stopped project can still be inspected, or permission requirements.

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 zero filler. The effect (going offline) is front-loaded and the reversibility caveat follows immediately where it is most useful.

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 one-parameter, no-output-schema tool with rich annotations, the description covers what it does, what the user-visible consequence is, and whether it can be undone. Nothing an agent needs in order to call it correctly is missing.

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?

There is a single parameter, project_id, and schema description coverage is 100%, so the schema fully carries the semantics. The description adds no format, ownership, or naming detail beyond what the schema already states; 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?

The description gives a specific verb and resource ("Stop a DenkOps deployment") plus the observable effect (containers stop, goes offline). It implicitly distinguishes itself from delete_project via the reversibility note, but never names start_project or delete_project, so the sibling differentiation is inferred 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?

"Reversible by starting the project again" effectively tells an agent to prefer this over a destructive delete when the deployment should be recoverable, which is real decision guidance. It stops short of explicit when-not conditions or naming the alternative tools (start_project, delete_project).

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