travis_triggerBuild · Mcp Travis MCP: Risk & Policy

WHAT IT DOES

What travis_triggerBuild does on Mcp Travis

AI agents invoke travis_triggerBuild to trigger actions in Mcp Travis. 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 travis_triggerBuild needs a policy

This tool executes a CI/CD build pipeline, which is an external operation whose effects depend on the arguments (repo and branch). While not destructive or financial, triggering builds can consume resources, affect deployment pipelines, run tests with side effects, or deploy code.

From the tool's definition Tool description explicitly states 'TRIGGER/START a NEW build' and 'starts a new CI build' - these are action verbs indicating execution of an external operation (CI/CD pipeline invocation). The warning emphasizes this is not a read operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

travis_triggerBuild Rate-limited

travis_triggerBuild 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": {
    "travis_triggerBuild": {
      "limits": [
        {
          "counter": "travis_triggerbuild_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 Travis, so you can run agents against it safely.

FAQ

Questions about travis_triggerBuild

What does the travis_triggerBuild tool do? +

⚠️ TRIGGER/START a NEW build for a repo and branch. WARNING: This starts a new CI build. DO NOT use this to view existing build logs - use travis_getBuildLogs instead. It is categorised as a Execute tool in the Mcp Travis MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on travis_triggerBuild? +

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

What risk level is travis_triggerBuild? +

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

Can I rate-limit travis_triggerBuild? +

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

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

travis_triggerBuild is provided by the Mcp Travis MCP server (montana/mcp-travis). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.