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

Annotations already mark the tool as idempotent and non-destructive. Description adds that it 'checks stop until resumed,' which clarifies the state change. However, it does not disclose potential failure modes (e.g., pausing an already paused monitor), required permissions, or postcondition details. For a simple tool with annotations, this is adequate but not rich.

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?

Short, two-sentence description that front-loads the core action. Every piece of information serves a purpose. No wasted words. Still, it could be slightly more informative without sacrificing brevity.

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?

Given the tool's simplicity (one required input, well-known action), the description covers basic purpose and usage. However, it lacks details about the output schema's return values, behavior under edge cases, and handling of already paused monitors. While an output schema likely exists, the description could be more self-contained.

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 has one parameter with a minimal description ('Monitor ID'). The description provides no additional parameter details or examples. With 100% schema coverage, baseline is 3. The description does not enhance parameter understanding beyond the schema.

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?

Clearly states the action ('Pause') and the resource ('monitor'). Mentions the effect ('checks stop until resumed') and a use case ('before planned work on a single target'). However, it does not explicitly differentiate from sibling tools like resume_monitor or update_monitor, making it slightly less than perfect.

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?

Provides some guidance ('Use before planned work on a single target'), which implies proper context. But it lacks explicit when-not-to-use, exclusions, or comparisons with alternatives like create_maintenance_window or resume_monitor.

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