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babelwrap

io.github.soulfir/babelwrap-mcp

by babelwrap

babelwrap_screenshot

Capture a screenshot of the current browser page to assist with debugging and visual inspection.

Instructions

Take a screenshot of the current page (for debugging).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
session_idYesThe active session ID.
compactNoIf True, return a compact snapshot with minimal whitespace.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

Without annotations, the description carries the full burden. It only states 'take a screenshot' with no mention of side effects, permissions, whether full-page scrolling is involved, or output format. Minimal behavioral context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Extremely concise: a single 9-word sentence that front-loads the core purpose. No unnecessary words.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool simplicity and presence of an output schema, the description covers the basic action. However, it lacks usage differentiation and behavioral details, leading to medium completeness.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so baseline is 3. The description adds no additional meaning beyond the schema; e.g., the 'compact' parameter's purpose is already described in the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

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 the target ('current page'). It adds a use-case hint ('for debugging') but does not explicitly differentiate from siblings like babelwrap_snapshot, which might also capture page state.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use this tool vs. alternatives. The hint 'for debugging' implies a context but no exclusions or comparative advice are provided.

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

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