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

With no annotations, the description carries the full burden. It does disclose output contents and the single-fetch nature, but it does not describe return envelope, error behavior, or whether any authentication is needed. 'Return' implies a read operation, yet no explicit safety or side-effect statement is provided.

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 with no filler. Every phrase adds useful information about what the bundle contains.

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 zero-parameter tool, the description is largely sufficient: it names what is returned and signals this is a one-call discovery action. It would be slightly more complete with an explicit note on expected usage in discovery flows or a note on response structure, but those are minor for this simple tool.

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 has zero parameters, so the empty input schema is complete and the baseline is 4. The description rightly adds no parameter information because there is nothing to document.

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 states a specific verb ('Return') and a specific resource ('single-fetch discovery bundle'), then lists its contents: interfaces, runtime mode, schemas, and sample payloads. This content list distinguishes it from sibling tools like oracle.service_descriptor or oracle.agent_card.

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 about when to use this tool versus its siblings. It does not mention alternatives or conditions under which a different oracle.* tool would be more appropriate, leaving the agent to infer usage solely from the name and content list.

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