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

The annotations already state that this is a non-read-only, idempotent, open-world, non-destructive mutation, and the description is consistent with that. However, the description adds no behavioral detail beyond the verb: no state prerequisite, side effects, permissions, or error conditions.

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 front-loaded sentence with no filler, which is appropriately brief for a one-parameter mutation. Its brevity reflects missing content elsewhere, but the sentence itself is concise and structured.

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 no output schema and annotations covering only the safety profile, the description omits the operational context needed for a schedule state transition: when resuming is valid, what changes, and what the agent should expect. For a resume mutation, this is not complete enough.

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 only parameter is a required id, but schema description coverage is 0% and the description never explains that it is a schedule identifier, its 10-character format, or where to obtain it. The property name gives minimal meaning, but the description does not compensate for the coverage gap.

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 ('Resume') and resource ('screenshot schedule'), so the core action is clear. It does not explicitly contrast with pause_schedule or explain that it reverses a paused schedule, so it is clear but not fully differentiated from siblings.

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?

There is no indication of when to use this tool instead of trigger_schedule or update_schedule, nor that the schedule must already be paused. The agent must infer usage entirely from the verb.

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