jenkins_safe_restart · Mcp Jenkins MCP: Risk & Policy

WHAT IT DOES

What jenkins_safe_restart does on Mcp Jenkins

AI agents invoke jenkins_safe_restart to trigger actions in Mcp Jenkins. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why jenkins_safe_restart needs a policy

Restarting Jenkins is an executable action that temporarily disrupts service availability and may affect ongoing CI/CD operations. While 'safe restart' minimizes impact by waiting for builds to finish, it remains an irreversible operational command that would cause significant disruption if triggered unexpectedly.

From the tool's definition Tool performs 'Safely restart Jenkins' which triggers a server restart operation. This is an external operational action that affects system state and availability, distinct from simple data retrieval (Read) or reversible modifications (Write).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

jenkins_safe_restart Rate-limited

jenkins_safe_restart stays usable, but rate-capped — a runaway agent can't fire it dozens of times 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_safe_restart": {
      "limits": [
        {
          "counter": "jenkins_safe_restart_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about jenkins_safe_restart

What does the jenkins_safe_restart tool do? +

Safely restart Jenkins — waits for running builds to finish before restarting (requires confirm: true). It is categorised as a Execute tool in the Mcp Jenkins MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on jenkins_safe_restart? +

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

What risk level is jenkins_safe_restart? +

jenkins_safe_restart is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit jenkins_safe_restart? +

Yes. Add a rate_limit block to the jenkins_safe_restart 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_safe_restart completely? +

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

jenkins_safe_restart is provided by the Mcp Jenkins MCP server (@kud/mcp-jenkins). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.