Daytona Playwright MCP Server

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

With no annotations provided, the description carries full burden for behavioral disclosure. It mentions the return format ('image that can be displayed'), which is helpful. However, it doesn't address important behavioral aspects: whether this requires an active browser session, what happens if the selector isn't found, performance/rate limits, file format details, or whether this is a read-only operation. The description is minimal beyond the basic return statement.

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 extremely concise with just two sentences that directly state the action and return value. Every word earns its place with zero redundancy. It's front-loaded with the primary purpose and follows with essential return information.

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 this is a browser interaction tool with no annotations and no output schema, the description is incomplete. It doesn't address session requirements, error conditions, image format specifics, or how the returned image can actually be used/displayed. For a tool that interacts with a browser and returns binary data, more contextual information would be helpful for an AI agent.

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%, so the schema already documents both parameters thoroughly. The description mentions 'current page or a specific element' which aligns with the full_page and selector parameters, but adds no additional semantic context beyond what's in the schema descriptions. This meets the baseline expectation when schema coverage is complete.

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 ('Take a screenshot') and resource ('current page or a specific element'), making the purpose immediately understandable. It distinguishes from sibling tools like browser_get_html or browser_get_text by focusing on visual capture rather than content extraction. However, it doesn't explicitly differentiate from all possible screenshot-related tools that might exist in other contexts.

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 when to prefer full_page vs selector, or how this relates to other browser tools like browser_get_html for content extraction. There's no context about prerequisites (e.g., needing an active browser session) or performance considerations.

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