get_system_status

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

There are no annotations, so the description carries the full burden. It clearly indicates a read-only fetch behavior, which is useful, but it does not disclose whether the returned status is a plain object, whether errors or empty values are possible, or any environment-specific caveats. Given the simple nature of a status query, this is adequate but not thorough.

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 that immediately states the action and lists the relevant content. There is no filler or repetition of the tool name.

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 or annotations, the description provides enough grounding about the expected contents, including four concrete status fields. It stops short of describing the exact return shape or exception behavior, but for a zero-parameter status query this is a reasonable, workable definition.

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?

There are 0 parameters, so there is no parameter semantics to explain. The description compensates by enumerating the kind of data that will be returned, which helps clarify what 'status' means even without an output 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?

The description uses a specific verb ('Retrieves') and names the resource ('system runtime status') along with concrete fields: Node version, OS, uptime, and timestamp. This clearly distinguishes it from sibling add_numbers, though it does not explicitly name the sibling as an alternative.

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?

No guidance is given for when to use this tool versus alternatives or when not to use it. While the sibling 'add_numbers' is clearly unrelated, there is no explicit usage context or exclusion criteria.

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