create_environment_variable · Coolify MCP Server MCP

WHAT IT DOES

What create_environment_variable does on Coolify MCP Server

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

WHY IT NEEDS A POLICY

Why create_environment_variable needs a policy

This tool creates environment variables, which modifies application configuration. This is a Write operation as it creates new data reversibly (environment variables can be updated or deleted). The severity is medium because misuse could expose sensitive secrets or misconfigure applications, but the effect is not irreversible and does not constitute destructive data loss or financial impact.

From the tool's definition Tool name is 'create_environment_variable' and description states 'Create a new environment variable'. The verb 'create' indicates creation of configuration data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_environment_variable Rate-limited

create_environment_variable 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": {
    "create_environment_variable": {
      "limits": [
        {
          "counter": "create_environment_variable_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 Coolify MCP Server, so you can run agents against it safely.

FAQ

Questions about create_environment_variable

What does the create_environment_variable tool do? +

Create a new environment variable. It is categorised as a Write tool in the Coolify 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 create_environment_variable? +

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

What risk level is create_environment_variable? +

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

Can I rate-limit create_environment_variable? +

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

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

create_environment_variable is provided by the Coolify MCP Server MCP server (pavelsukhachev/mcp-server-coolify). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.