update_project_variable

Update an existing CI/CD variable in 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/update-project-variable.md

WHAT IT DOES

What update_project_variable does on Gitlab Mcp

AI agents use update_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 update_project_variable is rated Medium

This tool modifies project configuration (CI/CD variables) reversibly. It is categorized as Write rather than Execute because it only changes variable definitions, not triggering execution.

From the tool's definition Tool name is 'update_project_variable' and description states 'Update an existing CI/CD variable in a project'. The verb 'update' indicates modification of existing data.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_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 update_project_variable, this is the rule to start with:

update_project_variable Rate-limited

update_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": {
    "update_project_variable": {
      "limits": [
        {
          "counter": "update_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 update_project_variable call is checked against it from then on.

FAQ

Questions about update_project_variable

What does the update_project_variable tool do? +

Update an existing CI/CD variable in 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 update_project_variable? +

Register the Gitlab MCP server in PolicyLayer and add a rule for update_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 update_project_variable? +

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

Can I rate-limit update_project_variable? +

Yes. Add a rate_limit block to the update_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 update_project_variable completely? +

Set action: deny in the PolicyLayer policy for update_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 update_project_variable? +

update_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.

KEEP EXPLORING

More on Gitlab, and thousands of servers like it.

This server

All 215 Gitlab tools →

Across the catalogue

create_project on Stitch MCP Server →aroflo_create_or_update_record on AroFlo MCP →team_manager_update_budget on Team Manager MCP → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →