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

Annotations already declare readOnlyHint=true and destructiveHint=false, so the description need not restate safety. It adds the account-scoping detail but does not disclose more behavioral traits such as output ordering, pagination, or authentication requirements; this is acceptable but not exceptional.

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 front-loaded sentence states the action and scope with no filler. Every word earns its place.

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 zero-parameter read-only list, this description is largely complete and gives enough to invoke it correctly. The term 'children' is slightly ambiguous without domain context, and no return shape is mentioned, but annotations cover the safety profile and no schema gaps need compensating.

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 the baseline is 4; there is no parameter ambiguity for the description to resolve.

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 names a specific operation ('List') and scope ('my own member profile and children linked to my account'), making clear this retrieves the caller's own subjects rather than public or class-related data. This is enough to distinguish it from siblings like list_public_classes and list_my_classes.

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 'my own' and 'linked to my account' establishes clear context: this tool is for the authenticated user's personal subject data. It does not explicitly name alternatives or state when not to use them, but the intended use case is apparent.

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