open_weather_forecast_israel

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

With no annotations, the description carries the full burden and it clearly discloses the core behavior: opening a new browser and navigating to a specific website. It adds a useful behavioral constraint about ordering, though it does not mention potential loading waits or failure behavior, which are minor for a simple navigation step.

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 sentences with no filler. The primary action is front-loaded, and the critical sequencing instruction is delivered in the second sentence, making it easy to parse.

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 zero-parameter navigation tool with an output schema, the description is complete enough: it states the action, the target site, and the required ordering relative to city entry or selection. No critical information is missing 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 100% schema description coverage, so there is no parameter semantic burden for the description to add. The baseline of 4 applies because the absence of parameters makes the schema trivially complete.

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 verb and resource: it opens a new browser and navigates to the forecast page of weather2day.co.il. It also distinguishes itself from siblings by explicitly positioning this as the first step before entering or selecting a city.

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 description explicitly states when to use the tool: 'must always be run first, before entering or selecting a city.' This gives clear sequencing relative to sibling tools like enter_weather_forecast_city_israel and select_weather_forecast_city_israel, leaving no ambiguity about when it applies.

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