check_cep_subscription

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

No annotations are provided, so the description carries the burden. The verb 'verifies' implies a read-only operation, which adds some transparency, but it does not explicitly state that no changes are made, require authentication, or disclose any side effects. It does add context about the 'actual protection state,' which is a mild extra, but lacks explicit behavioral details.

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 two short sentences with no redundant filler. The first sentence states the core purpose, and the second provides a practical context. Every word contributes meaning, making it highly concise and well-structured.

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 (one optional parameter) and the presence of an output schema, the description is largely complete. It covers the purpose, scope, and a use case. The only minor gap is that it does not clarify whether the operation is organization-wide or per-user, but this is already inferred from 'for an organization.' With no annotations, a small additional note about read-only behavior would improve completeness, but it remains adequate.

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 description coverage is 100%, with the property customerId already described as 'The Chrome customer ID (e.g. C012345).' The tool description adds no further meaning about the parameter, so the baseline of 3 is appropriate since the schema fully documents the parameter.

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 both the action ('Verifies') and the resource ('Chrome Enterprise Premium (CEP) license assignments for an organization'). It also distinguishes itself from the sibling tool check_user_cep_license by specifying organization-level scope, making it unambiguous what the tool does.

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 offers a use case ('useful for checking the actual protection state of users') but does not explicitly indicate when to choose this tool over alternatives like check_user_cep_license or list_org_units. No exclusions or alternative names are provided, so guidance is only implied rather than explicit.

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