close_browser

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

No annotations are provided, so the description must carry the burden of disclosing behavior. It does state the core behavioral effects: terminating the browser session and cleaning resources. It does not explicitly mention that the session is irreversibly closed or that any browser state is lost, which is a minor transparency gap.

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 a single short sentence with the primary action front-loaded and no filler. Every word contributes functional meaning.

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 tool with an output schema and an obvious lifecycle role, the description is nearly complete. It identifies the operation and resource clearly, but could add a brief note about it being the terminal browser step or the irreversible nature of closing the session.

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 input schema has zero properties, so there are no parameters to document. Per the baseline for a zero-parameter tool, the description sufficiently conveys what the tool does without needing parameter-level detail.

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 a specific action ('Encerra' = closes/ends) and a specific resource ('sessão do navegador' = browser session), plus the added effect of cleaning up resources. This makes its purpose unmistakable and clearly distinguishes it from siblings like launch_browser.

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 intended use is implied: close the browser session when it is no longer needed. However, the description does not explicitly state when to invoke it relative to other tools, such as 'use after completing browser automation,' nor does it mention alternatives or exclusions.

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