save_pipeline · Maa MCP: Risk & Policy

WHAT IT DOES

What save_pipeline does on MaaMCP

AI agents use save_pipeline to create or update resources in MaaMCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MaaMCP environment.

WHY IT NEEDS A POLICY

Why save_pipeline needs a policy

The tool likely creates or modifies stored pipeline configurations or state, making it a Write operation. Severity is high because misconfigured pipelines could cause unintended device automation actions (clicks, key inputs, etc.).

From the tool's definition Tool name 'save_pipeline' suggests storing or persisting state/configuration. The server provides automation control over Android and Windows devices.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

save_pipeline Rate-limited

save_pipeline stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "save_pipeline": {
      "limits": [
        {
          "counter": "save_pipeline_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches MaaMCP, so you can run agents against it safely.

FAQ

Questions about save_pipeline

What does the save_pipeline tool do? +

save_pipeline. It is categorised as a Write tool in the MaaMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on save_pipeline? +

Register the Maa MCP server in PolicyLayer and add a rule for save_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 MaaMCP. Nothing to install.

What risk level is save_pipeline? +

save_pipeline is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit save_pipeline? +

Yes. Add a rate_limit block to the save_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 save_pipeline completely? +

Set action: deny in the PolicyLayer policy for save_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 save_pipeline? +

save_pipeline is provided by the Maa MCP server (maa-ai/maamcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.