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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds useful context about what the response contains, but it does not disclose not-found behavior, error cases, or any additional operational details. No contradiction with annotations.

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?

The description is a single, tightly scoped sentence with no filler. The core distinction—one maintenance window, including updates and subscriber notification state—is front-loaded and immediately actionable.

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, read-only retrieval tool with no output schema, the description adequately conveys the response content. The schema covers the only parameter, and annotations cover the side-effect profile, so an agent has the essentials needed to call it correctly.

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?

The single uuid parameter is fully documented by the schema with format context ('Maintenance window UUID (format "mw_...")'). With 100% schema description coverage, the description is not required to add parameter semantics, and it does not.

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 clearly identifies the resource (maintenance window), the singular scope (one window), and the return contents (updates and subscriber notification state). This distinguishes it from list_maintenance_windows and update_maintenance_window based on the text alone.

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 context is only implied through the word 'one' and the tool name, suggesting a single-window fetch rather than listing all windows. There is no explicit statement about when to prefer this tool over list_maintenance_windows or when it should not be used.

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