getCaseFields

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

No annotations are provided, so the description carries full burden for behavioral disclosure. It only states 'retrieves all available fields' without mentioning authentication, rate limits, side effects, or return format, which is insufficient for a read operation.

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 extremely concise with two short sentences (English and Japanese), no redundancy, and front-loaded key action. Every word earns its place.

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?

Given zero parameters and simple purpose, the description is largely complete. However, without an output schema, the agent might benefit from knowing the return structure (e.g., list of field names or objects). Still, it's adequate for a straightforward retrieval.

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 input schema has zero parameters with 100% coverage, so the description adds nothing beyond the schema. However, it implicitly confirms no parameters are needed, which aligns with the empty schema. A perfect 5 would explicitly state 'no parameters required'.

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 clearly states the verb 'retrieves' and the resource 'all available test case fields in TestRail', making the tool's purpose unambiguous. It effectively distinguishes from sibling tools like getCase (single case) or getCases (list of cases) by specifying 'all available fields'.

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 on when to use this tool versus alternatives, such as getCase or getCases. The description lacks context about prerequisites or scenarios where this tool is preferred, leaving the agent to infer.

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