web_get_daily_deals

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

With no annotations, the description must disclose behavior itself. It usefully states that an empty response is expected and not an error, which prevents an agent from misreading a valid outcome as failure. No side effects or auth details are relevant for a zero-parameter read tool.

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 short German sentences: the first states the action, the second adds the essential non-obvious behavior. There is no repetition or 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 parameterless retrieval tool with an output schema, the description covers the key ambiguity (empty results are valid). It could be more complete by naming sibling alternatives, but that gap is minor because the tool is otherwise simple to invoke.

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 takes zero parameters and the schema confirms this, so there is no semantic burden for the description to carry. The baseline for 0-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 uses a specific verb ('abrufen') and resource ('Tagesangebote'), clearly identifying what the tool returns. However, it does not differentiate from sibling tools like web_get_deal_campaigns or web_get_deal_articles, which could plausibly overlap.

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 given about when to choose this tool over the deal-related siblings. The only usage context is that an empty result is legitimate, which helps interpretation but not tool selection.

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