oura_sleep

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

No annotations are provided, so the description carries the full disclosure burden. 'Get' implies a read, but the description says nothing about whether days with missing data are omitted, whether end_date defaults to today, rate limits, or auth requirements. For a data-retrieval tool with zero annotation coverage, that is a substantial gap.

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 efficient sentence with the core capability front-loaded and no wasted phrasing. It could be slightly tighter but nothing is redundant.

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 simple two-parameter read with no output schema, the description covers what data comes back, which is helpful. It omits date-range behavior and any reference to alternatives, leaving the agent to infer the query semantics.

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?

Schema description coverage is 100%, so both date parameters and their YYYY-MM-DD format are already documented in the schema. The description adds no parameter-level meaning (e.g., what happens when end_date is omitted), so the baseline 3 is correct.

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?

States a specific verb ('Get') and resource ('daily sleep data') and enumerates the returned fields (sleep score, sleep stages, duration). It is distinguishable from the oura_readiness/activity/heartrate siblings via the resource name, though it never explicitly contrasts itself with them.

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 on when to use this versus the sibling Oura tools, and no prerequisites or date-range conventions stated. The word 'daily' weakly implies a per-day date-range query, but nothing tells the agent how to choose between this and oura_readiness or how wide a range to request.

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