validate_schedule_cron_format

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

The description only says it validates and returns an empty dict on success. It does not disclose error behavior, whether it is read-only, idempotent, or what constitutes a valid cron format. With no annotations, the description should provide more behavioral context.

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 very short and front-loaded with the main purpose. It uses a simple Args/Returns structure. No unnecessary sentences, but could include a bit more detail without becoming verbose.

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 validation tool with two parameters and a trivial output (empty dict), the description is adequate. However, it lacks any constraints or caveats about cron format expectations, making it barely sufficient in context.

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?

The param descriptions ('ID of the project', 'Cron expression to validate') are nearly identical to the schema titles ('Project Id', 'Cron Format'), adding minimal extra meaning. With 0% schema description coverage, the description fails to significantly compensate.

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 it validates a cron expression for Semaphore schedules, specifying the two arguments. However, it does not explicitly differentiate from sibling tools like create_schedule or update_schedule that also involve cron expressions.

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?

No guidance on when to use this tool versus alternatives. For example, it doesn't mention using it before creating or updating a schedule, nor does it indicate prerequisites or circumstances to avoid.

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