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

Annotations already mark the operation as non-readOnly, idempotent, and non-destructive. The description adds useful behavioral context beyond these hints: it explains that monitors resume checks/alerts and that status pages transition to completed. It does not cover edge behavior (e.g., repeated calls), but the idempotentHint covers that.

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?

A single sentence, front-loaded with the action and condition, followed by the consequences. Every clause adds 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 one-parameter mutation tool with rich annotations, the description gives enough information to call it correctly and set expectations for the result. No output schema is present, but the description explains observable effects sufficiently.

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 the uuid parameter already has a clear description including the format 'mw_...'. The tool description adds no meaning beyond the schema, so the baseline of 3 is appropriate.

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?

Description uses a specific action ('End a maintenance window in progress now') and clearly names the resource and the outcome ('checks and alerts resume', 'status pages show it as completed'). It distinguishes from obviously read-oriented siblings, but does not explicitly differentiate from cancel_maintenance_window, so it falls one step short of full sibling differentiation.

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?

The phrase 'in progress now' gives clear context for when this tool applies, and the absence of 'scheduled' or 'upcoming' suggests it is not for future windows. However, it does not explicitly name when to use cancel_maintenance_window or update_maintenance_window instead, so alternatives are not spelled out.

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