spo2_day

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

No annotations are provided, so the description carries the full behavioral burden. It adds only the daily scope; it does not state that this is a read operation, what data source or permissions are involved, how a missing date is handled, or what the response contains.

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?

It is a single short sentence with no wasted words, but it is under-specified rather than appropriately concise. It omits the action and key semantics an agent needs before calling.

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 daily metric tool with no annotations, no output schema, and an undocumented parameter, the description should at least state retrieval behavior, date handling, and return scope. It leaves those gaps unaddressed.

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 single optional 'date' parameter has 0% schema description coverage. The phrase 'eines Tages' hints at a day selector but does not document the accepted date format, null/default behavior, or timezone semantics.

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 the health domain (SpO2) and altitude acclimatization with a daily scope, which distinguishes it from siblings like heart_rate_day or sleep_day. However, it is a noun phrase with no verb and never states that it retrieves data, so the purpose is only inferred.

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?

There is no guidance on when to use this tool, no prerequisites, and no mention of alternatives among the many sibling health-metric tools. The agent must infer its usage entirely from the domain name.

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