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

Annotations declare readOnlyHint=false, destructiveHint=false, and openWorldHint=false, so the safety profile is mostly covered. The description adds non-obvious behavioral context beyond that: linking a result cascades to link its case and run, and it discloses the prerequisite-failure behavior (a clear 'set up Jira first' message).

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?

Two sentences, front-loaded with the core purpose before the cascade caveat and the prerequisite. Slightly dense but every clause adds meaningful information; no filler.

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 mutation tool with no output schema, the description covers the key behaviors an agent needs: what gets linked, the cascade to case/run, and the failure mode when Jira isn't configured. It omits return-shape details, but those are not essential for correct invocation.

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%, with all three parameters documented, so the baseline is 3. The description adds marginal value by clarifying the kinds of Jira issues (requirement/user story/epic/bug) and the entity types, but the ULID/number formats and enum values are already fully specified in the schema.

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?

States a specific verb (link) and the exact resources involved (test case, test run, or run result to a Jira issue), and explains the downstream value (test coverage, traceability). This clearly distinguishes it from the sibling tm_link_ado_issue, which links to a different tracker.

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?

Gives a clear usage context (linking is what creates coverage/traceability) and an explicit precondition: the Jira integration must be set up, otherwise a 'set up Jira first' message is returned. It does not explicitly name the ADO sibling as the alternative path, which keeps it short of a 5.

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