Test-evaluate an alert rule against an item without persisting.

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

The description only adds 'without persisting', which is already reflected in the readonlyHint annotation. It does not provide additional behavioral context such as error conditions or side effects, leaving the agent with minimal extra information.

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 a single sentence identical to the title, making it concise but redundant. It could be more efficient by omitting the title repetition and adding unique details, but it is not overly long.

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 the tool's simplicity and the presence of an output schema, the description is minimally adequate. However, it lacks guidance on what constitutes a valid test, error cases, or how results are returned, which could be improved.

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?

With 0% schema description coverage and no explanation of parameters in the description, the agent must rely solely on parameter names (item_id, rule_id) which are vague. The description adds no semantic value beyond 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?

Tautological: description restates name/title.

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 implies that this tool is for testing without saving, but it does not explicitly state when to use it versus alternatives like create_rule or update_rule, nor does it list any prerequisites or limitations.

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