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

With no annotations, the description carries the full burden, and it does disclose two useful traits: the operation is free of cost and returns no product result (implying a safe, informational probe). However, it says nothing about rate limits, auth requirements, or the nature of the discovery state returned, leaving meaningful gaps.

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 terse, front-loaded sentences with no filler. The brevity is appropriate, though 'no product result' is cryptic enough that it reads as under-specification rather than efficient concision.

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?

An output schema exists, so return values need not be documented, and a zero-param tool has no inputs to explain. Still, the description does not clarify what 'discovery state' contains or when this probe should be used, leaving the agent with a vague but not empty picture.

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?

The tool takes zero parameters, so per the baseline there is nothing for the description to disambiguate. No param guidance is needed.

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 verb 'Return' and resource 'AIOS discovery state' give a rough sense of the action, but 'AIOS discovery state' is opaque jargon that an agent cannot map to a concrete outcome. It does not distinguish this tool from siblings like get_capability or list_capabilities, which also sound like discovery operations.

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 notes the call is 'Free' and produces 'no product result', which hints at a metadata/health-check use case but never states when to call this instead of get_capability, list_capabilities, or list_pricing. An agent gets no routing signal among four sibling discovery tools.

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