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

Annotations flag destructiveHint=true, which on its own would suggest irreversible loss; the description usefully corrects that impression by stating 'Data and code stay in place' and scoping the destruction to Postgres, endpoints and crons. It still does not say whether the pause is reversible, how long it lasts, or whether in-flight requests are terminated, so it falls short of full behavioral disclosure.

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 short sentences, front-loaded with the action, then the concrete effects, then the persistence guarantee. Every sentence carries information; the only slight redundancy is repeating the resource name.

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?

With a complete schema, an output schema, and rich annotations, the description only needs to cover intent and side effects, which it does. The remaining gap is the resume path and any post-pause effects on the project's availability, which an agent managing a project lifecycle would want.

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 100% for the single project_id parameter, which already specifies the UUID format and ownership requirement. The description adds nothing beyond 'for a project', so the 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 states a specific verb and resource ('Pause Bunstation Cloud for a project') and enumerates exactly what stops, which makes the tool clearly distinguishable from projects_generation_stop or the database tools. It stops short of naming the counterpart resume tool (projects_cloud_enable), so the sibling differentiation is implied rather than explicit.

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?

Usage is implied: an agent can infer this is the way to shut down hosted infrastructure while keeping the project. However, there is no explicit when-to-use/when-not guidance, no mention that projects_cloud_enable resumes it, and no statement about prerequisites or the state the project must be in before pausing.

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