Zephyr: Get Test Case

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description confirms it is a read operation and mentions expected output, but it does not add behavioral context such as not-found behavior, permissions, or pagination, which would have added value beyond the annotations.

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 well-structured with a clear opening sentence, a parameters section, and examples. The two examples are somewhat redundant since they only differ in the key value, but the overall length is appropriate and the important information is front-loaded.

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?

The tool is a simple single-parameter read operation, and the description covers the parameter, its format, and examples. An output schema exists, so return-value details are not required in the description. Nothing essential is missing for an agent to successfully call this 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?

Schema description coverage is 100%, so the baseline is 3, but the description adds value with the key format '[A-Z]+-T[0-9]+' and concrete examples like 'SA-T10'. These examples clarify what valid test case keys look like beyond the schema's looser pattern.

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 action ('Get details of test case') and the identifying input ('specified by key in Zephyr'), making the tool's purpose unambiguous. It does not explicitly name sibling tools, so it stops short of a perfect 5, but the singular focus on a key distinguishes it from list-oriented siblings like zephyr_get_test_cases.

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?

There is no guidance on when to prefer this tool over alternatives. The description provides examples but does not mention related tools such as zephyr_get_test_cases or zephyr_get_test_case_steps, nor does it state when a list versus a single test case is appropriate.

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