open_weather_forecast_israel

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

With no annotations provided, the description carries the behavioral burden. It discloses the side effect of opening a browser, the resulting state ('leaves the browser sitting on the forecast page with the city search box ready'), and the return value (page title and URL). This is meaningful beyond a bare action statement.

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 two short paragraphs, front-loads the core action and ordering instruction, and provides the necessary behavioral outcome and return info. Every sentence earns its place with no 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?

For a parameterless opener tool, the description covers what it does, when to call it, what state results, and what it returns. The output schema handles return formatting, so nothing essential is missing for correct selection and 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, so there is nothing for the description to document. The baseline of 4 applies, and the description adds no conflicting or unnecessary parameter information.

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 states a specific action — 'Open a browser and navigate to the Israeli weather forecast site' — with a clear verb and resource. The sibling tools cover closing, entering, selecting, and extracting, so this is unambiguously the initial navigation step.

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?

The explicit 'Call this first' provides clear ordering guidance and sets expectations for the workflow. It does not name alternatives or exclusions, but among siblings this is clearly the entry point, so the context is sufficient.

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