Daytona Playwright MCP Server

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. While it mentions the core action of typing text, it fails to describe important behavioral traits such as error handling (what happens if the selector doesn't exist or the element isn't editable), whether it waits for the element to be visible, or any side effects like triggering events. The description is minimal and lacks operational context.

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, clear sentence that efficiently conveys the core functionality without unnecessary words. It's appropriately sized and front-loaded, making it easy to understand at a glance, which is ideal for a tool with comprehensive schema documentation.

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's moderate complexity (5 parameters, no annotations, but with an output schema), the description is minimally adequate. The output schema likely handles return values, reducing the need for description detail. However, for a mutation tool (typing implies changing state) with no annotations, the description should provide more behavioral context, such as success/failure conditions or interaction effects, to be fully complete.

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?

Schema description coverage is 100%, with all parameters well-documented in the schema itself (e.g., selector for targeting, text for input, clear_first for clearing behavior). The description adds no additional parameter semantics beyond what's already in the schema, so it meets the baseline of 3 for high schema coverage without compensating value.

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 the action ('type text') and target ('into an input field or editable element'), providing a specific verb+resource combination. However, it doesn't differentiate this tool from similar siblings like browser_press (which might simulate key presses) or browser_select (which might select options), leaving room for ambiguity in a crowded browser automation context.

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 provides no guidance on when to use this tool versus alternatives. With many sibling tools available (e.g., browser_click, browser_press, browser_select), there's no indication of when typing text is appropriate versus other input methods, nor any mention of prerequisites like requiring an element to be focused or editable.

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