cancel_pipeline

Cancel a running pipeline

SERVERGitlab Mcp SOURCE@zereight/mcp-gitlab

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-zereight-gitlab-mcp/cancel-pipeline.md

WHAT IT DOES

What cancel_pipeline does on Gitlab Mcp

AI agents invoke cancel_pipeline to trigger actions in Gitlab Mcp. 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.

RISK

Why cancel_pipeline is rated High

Cancelling a pipeline is an external operational action that interrupts running jobs and workflows. It is not a simple data read or write, and while it stops execution it does not permanently delete data. However, it can cause significant disruption by aborting deployments, tests, or automated processes mid-run, making it an Execute-category action with high severity due to potential blast radius on CI/CD workflows.

From the tool's definition 'Cancel a running pipeline' — terminates an active CI/CD pipeline execution

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs cancel_pipeline safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Gitlab Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For cancel_pipeline, this is the rule to start with:

cancel_pipeline Rate-limited

cancel_pipeline 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": {
    "cancel_pipeline": {
      "limits": [
        {
          "counter": "cancel_pipeline_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Gitlab Mcp, apply this rule, and every cancel_pipeline call is checked against it from then on.

FAQ

Questions about cancel_pipeline

What does the cancel_pipeline tool do? +

Cancel a running pipeline. It is categorised as a Execute tool in the Gitlab Mcp MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on cancel_pipeline? +

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

What risk level is cancel_pipeline? +

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

Can I rate-limit cancel_pipeline? +

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

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

cancel_pipeline is provided by the Gitlab MCP server (@zereight/mcp-gitlab). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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