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

Annotations already establish that this is a read-only, idempotent, non-destructive, closed-world operation. The description adds no behavioral context beyond that, such as what happens when the id is unknown, whether it returns configuration details, or any access 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?

The single sentence is concise and front-loaded. However, its brevity reflects under-specification rather than efficient completeness for a tool with a required identifier and several similarly named siblings.

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?

There is no output schema, so the description should clarify what is returned when retrieving a schedule. It does not explain the return shape or how this tool differs from history and list operations, leaving an agent with important gaps.

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 one required parameter and schema description coverage is 0%. The description does not explain that the parameter is a schedule identifier, nor does it mention the 10-character alphanumeric format enforced by the schema pattern.

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?

It states a clear verb and resource: retrieving a screenshot schedule. However, it does not differentiate from sibling tools such as list_schedules or get_schedule_history, leaving ambiguity about whether it retrieves one schedule by identifier or something else.

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 description gives no guidance on when to use this tool versus alternatives like list_schedules or get_schedule_history. It does not mention preconditions, error cases, or how the required identifier should be obtained.

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