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

No annotations are provided, so the description must carry behavioral context. It makes clear that this is an informational guide rather than an action tool, but it does not describe the return format, whether content is static or dynamic, or any other operational traits.

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 a single, front-loaded sentence that names the guide category and then lists its three main topic areas. Every clause contributes useful scope information with no filler.

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 informational tool with no output schema, the description gives enough scope to understand what topics the guide covers. It could still say more about the form of the returned guidance, but the core content areas are adequately defined.

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 has zero parameters, so there are no parameter semantics to document. The description does not need to compensate for schema gaps, and the baseline for zero-parameter tools is 4.

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 identifies the tool as a digital health and telemedicine guide and lists specific covered topics: WHO screen-time recommendations, reducing phone use, and privacy checklists for health/counseling apps. It is not a tautology, but it does not explicitly differentiate itself from sibling wellness or health guidance tools.

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 listed topics imply when the tool is useful, but there is no explicit guidance on when to choose it over siblings such as health__get_counseling_guide or wellness__check_telehealth_eligibility. Usage is inferable only from the content areas.

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