rename_path · React Devtools MCP: Risk & Policy

WHAT IT DOES

What rename_path does on React Devtools

AI agents use rename_path to create or update resources in React Devtools — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your React Devtools environment.

WHY IT NEEDS A POLICY

Why rename_path needs a policy

The tool creates or modifies React component state/props/context data by renaming keys. This is a Write operation because it changes application data reversibly. Severity is medium because renaming keys in component state could break application functionality or logic that depends on specific key names, but the change is reversible (can be renamed back).

From the tool's definition Tool description states 'Rename a key in props/state/hooks/context' — this modifies application state by renaming keys, which is a reversible data modification operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rename_path Rate-limited

rename_path stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "rename_path": {
      "limits": [
        {
          "counter": "rename_path_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches React Devtools, so you can run agents against it safely.

FAQ

Questions about rename_path

What does the rename_path tool do? +

Rename a key in props/state/hooks/context. It is categorised as a Write tool in the React Devtools MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on rename_path? +

Register the React Devtools MCP server in PolicyLayer and add a rule for rename_path: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches React Devtools. Nothing to install.

What risk level is rename_path? +

rename_path is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit rename_path? +

Yes. Add a rate_limit block to the rename_path rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block rename_path completely? +

Set action: deny in the PolicyLayer policy for rename_path. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides rename_path? +

rename_path is provided by the React Devtools MCP server (skylarbarrera/react-devtools-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.