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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description adds that results include current status, which is useful. However, the parenthetical status list reads as return values and never states that results can be narrowed by status, and there is no mention of pagination or result ordering.

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, no waste, with the core action and result in the first sentence and the usage cue front-loaded in the second.

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 must carry return-shape and filtering semantics; it covers what is returned but leaves filter behavior, pagination, and ordering unaddressed. For a one-parameter read-only tool this is adequate but has a real gap.

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 coverage is 0% — the status property has only an enum and no description. The description lists the same enum values but frames them as statuses a service can have, not as a filter the caller can pass. An agent could conclude the list is always unfiltered, which is the key semantic gap for the only parameter.

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 and resource ('List all monitored services') with explicit scope ('all') and what is returned ('current status'). The phrase 'find a service's ID' implicitly separates it from the single-service sibling get_service.

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?

Gives clear positive guidance: 'Call this first to get an overview of infrastructure health, or to find a service's ID.' That covers the two main entry scenarios. It does not name alternatives or state when not to use it (e.g., when you already have an ID, use get_service).

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