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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds value by enumerating the returned payload (description, steps, expected result, priority, type, status, suite, assignee, storyId, last execution verdict), which partly compensates for the absence of an output schema.

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 action and resource, then the return payload, then the routing hint. No redundant restatement of the title and no wasted clauses.

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 single-parameter read tool with strong annotations but no output schema, the description supplies the field list an agent needs to decide whether this call has the data it wants. Only minor gaps remain (behavior when the id is unknown or not found).

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?

Only one parameter, testCaseId, and schema description coverage is 100% with an explicit note that it is a Stride test case UUID. The description's "by id" adds nothing beyond the schema, so the baseline of 3 applies.

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 ('Fetch') and resource ('a single Stride test case by id'), and enumerates the returned fields. It is unambiguously distinct from stride.list_test_cases, stride.update_test_case, and stride.get_test_run among the many siblings.

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?

"Use after stride.list_test_cases to inspect a specific case" names the sibling alternative and the condition that selects this tool. It does not state when NOT to use it (e.g., bulk inspection across many cases), but the routing signal is clear enough to act on.

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