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

Annotations are empty, so the description carries the full disclosure burden. It does disclose the auth/plan requirement and the effect (stopping scheduled checks until resumed), which is meaningful. But it does not state edge behavior such as idempotency (pausing an already-paused monitor), whether in-flight checks are affected, or reversibility beyond the implicit 'until resumed.'

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?

Two sentences with zero waste. The action and effect are front-loaded, and the prerequisite (token + plan) is appended in a second sentence without diluting the core message.

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 single-parameter tool with full schema coverage and no output schema, the description covers the action, effect, and prerequisites. The only gaps are edge-case behavior (already-paused state, in-flight checks), which are minor for this tool's simplicity.

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%, so the schema already documents monitor_id as a required UUID. The description adds only the 'owned' ownership constraint, which is marginal but real. Baseline 3 is appropriate when the schema does the heavy lifting.

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?

States a specific verb (pause), resource (monitor), and the mechanism (stopping scheduled checks until resumed). The 'owned' qualifier adds a scoping constraint that distinguishes it from generic pause operations and from siblings like delete-monitor, update-monitor, and resume-monitor.

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 implies usage context through 'owned monitor' and 'until resumed,' which hints at resume-monitor as the counterpart, and it states prerequisites (Full Access MCP token, eligible paid plan). However, it never names an alternative tool explicitly or gives a when-not-to-use condition (e.g., what to do if the monitor is already paused).

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