Rule Categories

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

The annotations already declare readOnlyHint=true, openWorldHint=true, and destructiveHint=false, covering the safety and mutability profile. The description adds no further behavioral detail such as config resolution, pagination, or link generation, but it is consistent with the read-only annotations and introduces no contradiction.

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: 'List cloud validation check categories.' It contains no filler, no repeated schema information, and every word contributes to understanding the tool's purpose.

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-required-parameter, read-only list tool with an output schema, the one-line description is nearly complete. It could slightly improve by indicating that these categories organize or filter the cloud validation checks exposed by sibling rule tools, but nothing essential is missing for an agent to invoke it correctly.

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 baseUrl, profile, and frontendUrl are already fully documented in the input schema. The description contributes no parameter-specific meaning, which is acceptable because the schema carries the complete parameter semantics.

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 ('List') and a specific resource ('cloud validation check categories'), making the tool's function immediately clear. It is also distinct from sibling tools like rules_search and rules_get, which operate on individual rules rather than their categories.

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 this tool is for retrieving categories, but it does not explicitly state when to prefer it over rules_search, rules_get, or reports_rules. There is no exclusion or alternative routing guidance, so the agent must infer usage from the name and sibling context.

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