whoop_get_sleep_need

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It consists solely of a noun phrase listing analysis components and does not indicate that this is a read-only operation, describe return values, or mention any side effects or limitations. This is a significant gap for a tool that likely retrieves computed data.

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 one compact phrase with no filler words. Every word contributes to naming the tool's focus, making it appropriately concise 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?

The tool is simple (one optional parameter), but the description lacks context on when to invoke it, what the output looks like, or how it relates to sibling sleep tools. It reads as a tagline rather than a complete guide, and with no output schema or annotations, more explanation is needed to fully prepare an agent.

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 fully documents the single response_format parameter with an enum and default value, achieving 100% schema description coverage. The description adds no additional parameter meaning, but per the rubric, a baseline of 3 is appropriate when the schema does the heavy lifting.

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 'Sleep need analysis' and enumerates specific components (baseline need, sleep debt, strain-based need, nap offsets), which differentiates it from sibling whoop_get_sleep by focusing on need rather than raw sleep data. It is specific and actionable, though it does not explicitly name the sibling tool as an alternative.

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?

No guidance is provided on when to use this tool versus alternatives like whoop_get_sleep or whoop_get_recovery. The description neither states conditions for use nor mentions any exclusions or alternative tools, leaving the agent without decision support.

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