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skylarbarrera

react-devtools-mcp

override_state

Modify React component state values during debugging to test different scenarios and fix issues in real-time.

Instructions

Override a state value on a class component

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesElement ID
pathYesPath to state key
valueYesNew value
Behavior2/5

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 mentions 'Override', implying a mutation, but fails to detail critical aspects like whether this requires specific permissions, if changes are reversible, potential side effects, or error handling. This leaves significant gaps for safe and effective use.

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?

The description is a single, efficient sentence that directly states the tool's purpose without unnecessary words. It is front-loaded and wastes no space, making it easy to understand at a glance.

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?

Given the complexity of a mutation tool with no annotations and no output schema, the description is inadequate. It lacks details on behavioral traits, usage context, and expected outcomes, which are essential for an AI agent to invoke this tool correctly and safely.

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 the schema already documents all parameters ('id', 'path', 'value') with basic descriptions. The description does not add any additional meaning or context beyond what the schema provides, such as examples or constraints, resulting in a baseline score.

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 ('Override') and target ('a state value on a class component'), which is specific and actionable. However, it does not distinguish this tool from similar siblings like 'override_props' or 'override_context', leaving some ambiguity about when to choose one over another.

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 alternatives like 'override_props' or 'override_context'. The description lacks context about prerequisites, such as needing a connected component or specific permissions, which could lead to misuse.

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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