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Lars-Albinsson

playwright-react-debug-mcp

get_component_state

Retrieve the current state and props of a specific React component by name and index, enabling detailed inspection during debugging.

Instructions

Get detailed state and props for a specific React component

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
nameYesComponent name to find
indexNoIf multiple matches, which one (0-indexed, default: 0)
Behavior2/5

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

With no annotations, the description carries the full burden. It does not disclose any behavioral details such as error cases, index resolution, or whether this is a safe read operation. It only restates the tool's basic function.

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?

Single sentence, direct, and front-loaded with the action. No filler.

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?

The description is minimal and does not cover when to use it, what the output looks like, or how the index parameter works. Given the number of sibling React debugging tools, more context would be valuable.

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%, so the baseline is 3. The description does not add any parameter-specific meaning beyond the schema, but it does implicitly refer to the 'name' parameter by 'specific React component'. No added value.

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 (get) and target (state and props of a React component). It is specific enough to understand the tool's scope, though it does not explicitly differentiate from sibling tools like get_context_values or collect_component_instances.

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 is provided on when to use this tool versus similar React introspection tools. The description does not mention alternatives or conditions.

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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