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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered. The description adds genuine value beyond that by disclosing the content returned (price, inclusions, enroll link) and that the result set is a fixed, small catalog, which tells the agent this is a cheap static lookup.

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?

A single sentence with zero filler, front-loaded with the verb and the primary program, and the parenthetical field list is compact rather than redundant.

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?

With no parameters and no output schema, the description carries the burden of describing returns, and it does so for the main certification (price, inclusions, enroll link) though less explicitly for the NOGA Foundation and Define Barre entries. For a simple static catalog lookup this is close to sufficient, with only the exact per-training fields for the latter two left unspecified.

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 tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline for parameterless tools applies. The description correctly implies no filtering is needed because the catalog is enumerated in full.

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 ('Returns details of') and a specific resource (teacher certification trainings), then enumerates the three programs covered and the key fields (price, what's included, enroll link). None of the siblings (class schedule, session times, services, instructors) overlap, so an agent can route unambiguously.

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?

Usage is implied by the domain: this is the tool for certification/training questions rather than class booking, which the sibling names make easy to infer. However, it never states when to prefer it over list_services, which could plausibly also surface trainings, nor any exclusions.

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