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

Annotations already declare idempotentHint=true, destructiveHint=false, readOnlyHint=false, and openWorldHint=false, so the safety profile is covered by structured data. The description adds nothing further — it does not say whether pausing halts in-progress runs, whether permissions are needed, or what the response looks like, which is the value the description should supply for a state-changing toggle.

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 short sentence with no filler and the action front-loaded, so nothing is wasteful. It is efficient but thin to the point of under-specification for a mutation tool.

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?

The tool is simple (two required scalars, no nesting, no output schema) and annotations plus schema cover most of what an agent needs to invoke it. Still, for a tool that changes schedule state, the description leaves out operational consequences and any mention of the paused/resumed effect on running work, so it is only minimally complete.

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% and both parameters carry inline descriptions ('false pauses it, true resumes it' and 'Schedule id (s_…)'), so the schema does the heavy lifting. The description adds no syntax, format, or constraint detail beyond that, which is the expected baseline when coverage is complete.

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 gives a concrete verb pair and resource ('Pause or resume a schedule'), which is more informative than the bare name update_schedule and separates it from create_schedule/delete_schedule. However, it is a verbatim restatement of the title and says nothing about what else 'update' might cover, so it adds no clarity beyond the header.

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 guidance on when to pause versus resume beyond the schema's own 'false pauses it, true resumes it', and no mention of prerequisites, side effects, or when to prefer a different sibling tool. The agent must infer all usage context from the schema.

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