playwright_cli_close

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states the action 'close' without explaining side effects such as whether the underlying browser process terminates, whether the session becomes invalid for reuse, or how it interacts with ongoing operations. For a destructive action like close, this is a significant 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 concise sentence with no wasted words. However, the brevity contributes to the lack of crucial details, making it more under-specified than efficiently concise.

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?

Although an output schema exists and return values are covered, the tool's parameters are undocumented, behavioral effects are ambiguous, and the session lifecycle implications are unclear. The description provides only the core action and is insufficient for safe and correct invocation of this destructive tool.

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 description coverage for its three parameters, and the description does not compensate. While 'named session' implies the session parameter, the purpose of max_chars and timeout_seconds is completely unexplained, leaving the agent without any semantic understanding of how to set them.

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 clear action verb 'close' and names the resource as the 'current page/browser' for a named Playwright CLI session, which distinguishes it from sibling tools like open, goto, and action. However, the phrase 'page/browser' is ambiguous about whether it closes only the page, the entire browser, or both, slightly reducing clarity.

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?

There is no guidance on when to use this tool versus alternatives, no mention of prerequisites (e.g., whether a session must already be open), and no explicit statement about its role in the session lifecycle. The usage is inferred from the name and description but not explained.

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