Cancel a running CI/CD pipeline.
AI agents call cancel_pipeline_tool to permanently remove resources in MCP Gitlab — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Cancelling a running pipeline is an irreversible action — the pipeline cannot be resumed from where it stopped. It disrupts ongoing CI/CD workflows, potentially blocking deployments, releases, or automated processes. This makes it destructive in nature with a high blast radius if misused by an AI agent.
From the tool's definition Cancel a running CI/CD pipeline
Attacks that exploit this kind of access
Cancel a running CI/CD pipeline. It is categorised as a Destructive tool in the MCP Gitlab MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the MCP Gitlab MCP server in PolicyLayer and add a rule for cancel_pipeline_tool: 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 Gitlab. Nothing to install.
cancel_pipeline_tool is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the cancel_pipeline_tool 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 cancel_pipeline_tool. 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.
cancel_pipeline_tool is provided by the MCP Gitlab MCP server (mcp-gitlab-crunchtools). 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.
Teams ship this data inside their own products. See what a licence covers →