hcm_get_benefit_enrollment

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

The readOnlyHint annotation already communicates that this is a safe read operation, but the description adds no behavioral details beyond that. It does not mention what happens when the id is not found, what data is returned, or any edge cases. With no extra behavioral context from the description, the transparency is limited.

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 appropriately short and front-loads the verb and resource. There is no filler or redundant information. It is slightly terse, but every word earns its place for such a simple lookup tool.

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 one-parameter read-only lookup, the description is adequate but sparse. An agent with an enrollmentId can invoke the tool, but the description does not explain how to obtain the ID, what the response contains, or how not-found cases are handled. Since there is no output schema, some of this missing context is a real gap.

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 schema provides no description for enrollmentId, only that it is a required string. The description's 'by id' confirms that the parameter is the lookup key, but it adds no detail about the ID format, source, or uniqueness. The compensation for the schema coverage gap is minimal.

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 states a specific verb ('Get'), a clear resource ('benefits enrollment'), and the lookup method ('by id'). This distinguishes it from the sibling tool hcm_search_benefit_enrollments, which searches rather than fetches a single record. The purpose is immediately clear.

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 phrase 'by id' implies this tool should be used when an enrollment ID is already known, and that it retrieves a specific record. However, there is no explicit guidance about when to use it versus hcm_search_benefit_enrollments, nor any mention of prerequisites or alternatives. The usage context is only minimally implied.

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