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skylarbarrera

react-devtools-mcp

override_context

Modify React component context values during debugging to test different states and behaviors in your application.

Instructions

Override a context value

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesElement ID
pathYesPath within context
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. 'Override' implies a mutation operation, but the description doesn't disclose behavioral traits such as whether this requires specific permissions, if changes are reversible, potential side effects, or how it interacts with other tools. This is a significant gap for a mutation tool with zero annotation coverage.

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 with zero waste. It's appropriately sized and front-loaded, making it easy to parse quickly without unnecessary elaboration.

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 that this is a mutation tool with no annotations, no output schema, and a vague purpose, the description is incomplete. It lacks context about what 'context value' means, how overrides affect the system, or what the expected outcome is, making it inadequate for safe and effective use by an AI agent.

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 three parameters (id, path, value) with descriptions. The description doesn't add any meaning beyond what the schema provides, such as explaining the relationship between parameters or providing examples. Baseline 3 is appropriate when the schema does the heavy lifting.

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

Purpose3/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description 'Override a context value' states a clear verb ('override') and resource ('context value'), but it's somewhat vague about what 'context value' specifically refers to in this domain. It doesn't differentiate from sibling tools like 'override_hooks', 'override_props', or 'override_state', which all involve overriding different aspects of components.

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?

The description provides no guidance on when to use this tool versus alternatives. There's no mention of prerequisites, specific scenarios, or comparisons to sibling tools like 'override_hooks' or 'override_state', leaving the agent to infer usage from the name alone.

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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