start_job · UiPath MCP Server MCP: Risk & Policy

WHAT IT DOES

What start_job does on UiPath MCP Server

AI agents invoke start_job to trigger actions in UiPath MCP Server. 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 start_job needs a policy

This tool initiates process execution in UiPath Orchestrator, which is an external workflow engine. The effects are not predetermined by the tool itself but depend on what the triggered process does — it could modify data, interact with systems, or perform business operations.

From the tool's definition Tool description states 'Start a job for a UiPath process' — triggering job execution is a dynamic operation that runs automated workflows whose effects depend on the process configuration and arguments.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

start_job Rate-limited

start_job 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": {
    "start_job": {
      "limits": [
        {
          "counter": "start_job_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 UiPath MCP Server, so you can run agents against it safely.

FAQ

Questions about start_job

What does the start_job tool do? +

Start a job for a UiPath process. It is categorised as a Execute tool in the UiPath MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on start_job? +

Register the UiPath MCP Server MCP server in PolicyLayer and add a rule for start_job: 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 UiPath MCP Server. Nothing to install.

What risk level is start_job? +

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

Can I rate-limit start_job? +

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

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

start_job is provided by the UiPath MCP Server MCP server (lokimcpuniverse/uipath-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.