jenkins_create_job · Jenkins Http MCP: Risk & Policy

WHAT IT DOES

What jenkins_create_job does on Jenkins Http

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

WHY IT NEEDS A POLICY

Why jenkins_create_job needs a policy

This tool creates a new Jenkins job, which is a reversible modification of Jenkins configuration state. While it modifies the Jenkins system, the action is not destructive (jobs can be deleted) and does not execute builds or arbitrary code directly—it only creates the job definition.

From the tool's definition Tool name is 'jenkins_create_job' and description states 'Create a top-level job from config.xml. Requires write and job-config flags.' The verb 'Create' and explicit mention of 'write' flag indicate data creation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

jenkins_create_job Rate-limited

jenkins_create_job 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": {
    "jenkins_create_job": {
      "limits": [
        {
          "counter": "jenkins_create_job_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Jenkins Http, so you can run agents against it safely.

FAQ

Questions about jenkins_create_job

What does the jenkins_create_job tool do? +

Create a top-level job from config.xml. Requires write and job-config flags. It is categorised as a Write tool in the Jenkins Http MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on jenkins_create_job? +

Register the Jenkins Http MCP server in PolicyLayer and add a rule for jenkins_create_job: 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 Jenkins Http. Nothing to install.

What risk level is jenkins_create_job? +

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

Can I rate-limit jenkins_create_job? +

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

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

jenkins_create_job is provided by the Jenkins Http MCP server (mdtahmidhossain/jenkins-http-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.