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. It states what the tool does but doesn't explain what 'hover over' means in practice (e.g., simulates mouse movement, may trigger CSS events), potential side effects (e.g., could change page state), error conditions (e.g., if selector not found), or response behavior. For a browser automation tool with no annotation coverage, 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, efficient sentence that directly states the tool's purpose without unnecessary words. It's front-loaded with the core action and target, making it easy to parse. Every word earns its place, and there's no redundancy or fluff.

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 that there's an output schema (which likely describes the return value), the description doesn't need to explain return values. However, for a browser interaction tool with no annotations and multiple similar siblings, the description is minimal. It covers the basic purpose but lacks context about behavior, usage scenarios, and differentiation from other tools, making it only adequate for simple use cases.

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 clear documentation for both parameters (selector and timeout). The description doesn't add any parameter-specific information beyond what's in the schema, such as examples of valid selectors or typical timeout values. However, since the schema fully covers the parameters, the baseline score of 3 is appropriate.

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 ('hover over') and target ('an element on the page'), providing a specific verb+resource combination. However, it doesn't explicitly distinguish this from sibling tools like 'browser_click' or 'browser_press', which also interact with page elements, leaving some ambiguity about when to choose hover versus other interaction methods.

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. It doesn't mention typical use cases (e.g., triggering dropdown menus, tooltips), prerequisites (e.g., element must be visible), or exclusions (e.g., not for clicking). With multiple sibling interaction tools available, this lack of context makes it harder for an agent to select appropriately.

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