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MiwooMiwoo

CloakBrowser MCP Server

by MiwooMiwoo

cloak_console

Retrieve browser console logs and evaluate JavaScript expressions to debug and interact with web pages.

Instructions

Get browser console output or evaluate JavaScript expression.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
clearNoClear console log buffer after reading.
expressionNoJavaScript expression to evaluate.
Behavior2/5

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

No annotations are present, so the description bears full responsibility. It fails to disclose what happens when 'expression' is evaluated (e.g., return value, side effects), or the effect of 'clear' on subsequent outputs.

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

Conciseness4/5

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

The description is a single, efficient sentence. It is front-loaded and lacks fluff, but could benefit from separating the two use cases for clarity.

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

Completeness2/5

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

Without output schema or annotations, the description leaves gaps: no return format, error handling, or examples. Given the tool's complexity and sibling overlaps, it is insufficiently complete.

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 coverage is 100%; the description adds no extra meaning beyond the schema definitions. Baseline of 3 applies as it neither enriches nor detracts.

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 tool retrieves browser console output or evaluates JS expressions. However, it does not differentiate from sibling 'cloak_evaluate', which also evaluates expressions, creating potential confusion.

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 guidance on when to use this tool versus alternatives like 'cloak_evaluate' or other console-related tools. No context on prerequisites or exclusions 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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