playwright_cli_action

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

With no annotations, the description carries full responsibility for disclosing side effects. It calls actions 'safe' but does not define safety or mention that commands like click/fill modify page state. It also omits failure behavior, permissions, or return characteristics, which is a significant gap for a tool that can execute arbitrary CLI commands.

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 one concise sentence with a clear front-loaded verb phrase. It avoids wasted words, but the brevity comes at the cost of necessary detail, making it efficient yet insufficient.

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 has 5 parameters and no annotation support, the description is far too sparse. It does not clarify what commands are valid, how args map to them, what the output schema contains in practice, or how session/timeout affect execution. Even with an output schema present, the description alone cannot guide 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 description names example command values but does not explain any of the five parameters (command, args, session, max_chars, timeout_seconds). Since schema coverage is 0%, the description must compensate, and it only hints at the command parameter. Args, session, and timeout behavior remain entirely undocumented.

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 it runs a Playwright CLI action and gives concrete examples (click, fill, press, console, requests, tabs). This distinguishes it from sibling tools like open, goto, or snapshot, which are more specific operations. It could be more explicit about what 'action' encompasses, but the examples anchor the purpose well.

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?

No guidance is provided on when to use this tool versus the many sibling tools (e.g., goto for navigation, snapshot for state capture). The description implies it handles interactions and console/network requests, but does not state exclusions or alternatives, leaving the agent to guess based on tool names.

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