changeBaseLanguage · Verblaze MCP Server MCP: Risk & Policy

WHAT IT DOES

What changeBaseLanguage does on Verblaze MCP Server

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

WHY IT NEEDS A POLICY

Why changeBaseLanguage needs a policy

This tool modifies a fundamental project setting (the base language), which is a reversible write operation but has high blast radius since changing the base language affects all translations and localization workflows across the entire project. It does not delete data, but the impact of misconfiguration is significant.

From the tool's definition Change the base language of a Verblaze project

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

changeBaseLanguage Rate-limited

changeBaseLanguage 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": {
    "changeBaseLanguage": {
      "limits": [
        {
          "counter": "changebaselanguage_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 Verblaze MCP Server, so you can run agents against it safely.

FAQ

Questions about changeBaseLanguage

What does the changeBaseLanguage tool do? +

Change the base language of a Verblaze project. REQUIRED: languageCode. Example: { languageCode:. It is categorised as a Write tool in the Verblaze 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 changeBaseLanguage? +

Register the Verblaze MCP Server MCP server in PolicyLayer and add a rule for changeBaseLanguage: 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 Verblaze MCP Server. Nothing to install.

What risk level is changeBaseLanguage? +

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

Can I rate-limit changeBaseLanguage? +

Yes. Add a rate_limit block to the changeBaseLanguage 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 changeBaseLanguage completely? +

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

changeBaseLanguage is provided by the Verblaze MCP Server MCP server (verblaze/verblaze_mcp_server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.