Zephyr: Create Test Cycle Issue Link

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

Annotations already communicate that this is a non-read-only, non-destructive operation. The description adds useful behavioral context by explicitly stating 'no output is expected' in the expected output for both examples, which is valuable since no output schema exists. It also implies a new link is created each time, consistent with idempotentHint=false.

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 and front-loaded with the core purpose. The examples earn their place by demonstrating both accepted key formats, and the repeated 'no output expected' note is directly useful. However, the parameter list and 'Toolset' heading partly duplicate what the name and schema already provide, preventing a perfect score.

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 simple two-parameter create-link operation, the description is complete: it covers purpose, parameter formats, expected behavior, and explicitly states that no output will be returned. The annotations cover the safety profile, and the examples resolve ambiguity in how testCycleIdOrKey can be specified.

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 coverage is 100%, so the baseline is 3. The description repeats the parameter names and descriptions already present in the schema. The examples do illustrate the two acceptable forms of testCycleIdOrKey ('SA-R1' and '1001'), which is mildly helpful but does not add substantial semantic meaning beyond the schema's 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 opens with a specific verb and resource: 'Create a new link between an issue in Jira and a Test Cycle in Zephyr.' This clearly distinguishes it from sibling tools like zephyr_create_test_case_issue_link and zephyr_create_test_execution_issue_link by naming the exact entity pair being linked.

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 gives clear context for when the tool is appropriate: whenever an issue-to-test-cycle link is needed. It does not explicitly name alternatives or provide when-not-to-use guidance, but the entity pairing is specific enough to direct selection among the similar create-link siblings. 'Toolset: Test Cycles' reinforces the context.

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