Critical Risk →

stop_build

Stop a running Jenkins build

Risk signalsAborts in-progress build execution

Part of the Jenkins server.

stop_build can permanently delete data in Jenkins, with no limits today. PolicyLayer puts allow, deny, and rate-limit rules on every call. Live in minutes.

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AI agents may call stop_build to permanently remove or destroy resources in Jenkins. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. PolicyLayer blocks destructive tools by default and requires explicit human approval before enabling them.

Without a policy, an AI agent could call stop_build in a loop, permanently destroying resources in Jenkins. There is no undo for destructive operations. PolicyLayer blocks this tool by default and only allows it when a human explicitly approves the action.

Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.

policy.json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "stop_build"
  ]
}

See the full Jenkins policy for all 15 tools.

Get this rule live on your own Jenkins server in minutes. PolicyLayer enforces it on every call, before it runs.

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View all 15 tools →

These attack patterns abuse exactly the kind of access stop_build gives an agent. Each links to the full case and the policy that stops it:

Browse the full MCP Attack Database →

Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so stop_build only ever does what you allow.

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Other destructive tools across the catalogue. The same approach applies to each: deny by default, or require human approval.

What does the stop_build tool do? +

Stop a running Jenkins build. It is categorised as a Destructive tool in the Jenkins MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on stop_build? +

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

What risk level is stop_build? +

stop_build is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit stop_build? +

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

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

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

Enforce policy on every Jenkins tool call.

Deterministic rules across all 15 Jenkins tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

Free to start. No card required.

4,600+ MCP servers and 31,000+ tools scanned and risk-classified.

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