create_project_variable

Create a CI/CD variable for a project

SERVERGitlab Mcp SOURCE@zereight/mcp-gitlab

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-zereight-gitlab-mcp/create-project-variable.md

WHAT IT DOES

What create_project_variable does on Gitlab Mcp

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

RISK

Why create_project_variable is rated Medium

Creating a CI/CD variable adds or modifies configuration data in a GitLab project, which is a write operation. While CI/CD variables can contain sensitive credentials, the creation itself is reversible (variables can be deleted or updated), so it does not qualify as Destructive.

From the tool's definition Tool name contains 'create' and description states 'Create a CI/CD variable for a project'. This is a reversible creation action that modifies project configuration.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_project_variable safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Gitlab Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For create_project_variable, this is the rule to start with:

create_project_variable Rate-limited

create_project_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_project_variable": {
      "limits": [
        {
          "counter": "create_project_variable_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Gitlab Mcp, apply this rule, and every create_project_variable call is checked against it from then on.

FAQ

Questions about create_project_variable

What does the create_project_variable tool do? +

Create a CI/CD variable for a project. It is categorised as a Write tool in the Gitlab Mcp 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_project_variable? +

Register the Gitlab MCP server in PolicyLayer and add a rule for create_project_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 Gitlab Mcp. Nothing to install.

What risk level is create_project_variable? +

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

Can I rate-limit create_project_variable? +

Yes. Add a rate_limit block to the create_project_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_project_variable completely? +

Set action: deny in the PolicyLayer policy for create_project_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_project_variable? +

create_project_variable is provided by the Gitlab MCP server (@zereight/mcp-gitlab). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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