open_weather_forecast_israel

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

With no annotations, the description carries the burden of disclosure. It transparently reveals the key side effect—opening a browser and navigating to a site—and the prerequisite ordering. It does not detail post-navigation behavior, but the output schema likely covers return values. The main behavioral traits are disclosed adequately.

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 sentences: the first states the core action and target URL, the second gives a crucial ordering instruction. Every word earns its place, with no filler or redundancy.

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 the tool's simplicity (0 params, output schema present) and the clear relationship to siblings, the description is complete. It tells the agent what to do, what site to navigate to, and when to do it, which is all that is needed for correct invocation.

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 has zero parameters and schema coverage is 100%, so the baseline for 0 params is 4. The description doesn't need to explain parameters since there are none, and it adds no parameter-specific information beyond that.

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 the tool opens a browser and navigates to a specific weather forecast site (weather2day.co.il). It identifies the exact resource and action, and the 'must be called first' note differentiates it from sibling tools that enter/select/get city content.

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?

Explicitly instructs that this must be called first, before entering or selecting a city, providing a clear ordering constraint relative to sibling tools. This gives the agent unambiguous guidance on when to use this tool versus the alternatives.

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