rename_columns | PolicyLayer

WHAT IT DOES

What rename_columns does on Vibe Preprocessing and Analysis MCP Server

AI agents use rename_columns to create or update resources in Vibe Preprocessing and Analysis MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Vibe Preprocessing and Analysis MCP Server environment.

WHY IT NEEDS A POLICY

Why rename_columns needs a policy

Renaming columns modifies DataFrame metadata reversibly. This is a Write operation (the tool changes structure but the action is undoable—columns can be renamed back). Severity is medium: misuse could corrupt column references in dependent analyses or obscure data semantics, but the operation itself is not destructive, financial, or code-execution based.

From the tool's definition Tool description states it 'Rename columns in the global DataFrame' — a modification operation that changes data structure without deleting or executing arbitrary code.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

rename_columns Rate-limited

rename_columns 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_columns": {
      "limits": [
        {
          "counter": "rename_columns_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 Vibe Preprocessing and Analysis MCP Server, so you can run agents against it safely.

FAQ

Questions about rename_columns

What does the rename_columns tool do? +

Rename columns in the global DataFrame. It is categorised as a Write tool in the Vibe Preprocessing and Analysis MCP Server 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_columns? +

Register the Vibe Preprocessing and Analysis MCP Server MCP server in PolicyLayer and add a rule for rename_columns: 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 Vibe Preprocessing and Analysis MCP Server. Nothing to install.

What risk level is rename_columns? +

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

Can I rate-limit rename_columns? +

Yes. Add a rate_limit block to the rename_columns 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_columns completely? +

Set action: deny in the PolicyLayer policy for rename_columns. 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_columns? +

rename_columns is provided by the Vibe Preprocessing and Analysis MCP Server MCP server (mudit14224/vibe-data-analysis). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.