get_personal_info

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

With no annotations provided, the description carries the full burden. It lists the fields returned (age, weight, height, biological sex) and the intended use, but does not disclose behavioral traits such as whether it is read-only, authentication needs, or the response format. This is minimal disclosure for a tool that retrieves personal information.

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?

Two sentences with no filler. The first sentence concisely states the action and the data returned, and the second adds brief context. It is appropriately sized and front-loaded.

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 zero parameters, no output schema, and no annotations, the description covers the essential details about the data retrieved and its purpose. It could mention prerequisites (e.g., user authentication) but is mostly complete for a simple retrieval tool.

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 input schema has zero parameters with 100% coverage. The description adds meaning beyond the schema by listing the types of information returned (age, weight, height, biological sex), helping the agent understand what to expect from the tool.

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 'Get your Oura profile information including age, weight, height, and biological sex', specifying the verb and resource. Among sibling tools like get_activity and get_sleep, it uniquely focuses on personal profile data, distinguishing itself effectively.

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 implies usage for retrieving profile data but does not explicitly state when to use this tool versus alternatives. It mentions that data is used for personalization but lacks guidance on when not to use it or potential prerequisites.

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