AI agents call list_queue to retrieve information from Jenkins without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns the current state of the Jenkins build queue without modifying, deleting, executing, or triggering any builds or operations. It is purely informational. Even in a misuse scenario, an agent could only read queue information, which poses minimal risk.
From the tool's definition Tool name 'list_queue' and description 'Return all items currently in the Jenkins build queue' indicate a simple retrieval operation with no side effects. The verb 'Return' and the context of listing/querying queue state are consistent with data retrieval.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Return all items currently in the Jenkins build queue. It is categorised as a Read tool in the Jenkins MCP Server, which means it retrieves data without modifying state.
Register the Jenkins MCP server in PolicyLayer and add a rule for list_queue: 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.
list_queue is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_queue 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.
Set action: deny in the PolicyLayer policy for list_queue. 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.
list_queue is provided by the Jenkins MCP server (lokimcpuniverse/jenkins-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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