UpdateFunction · Alibabacloud Dataworks MCP: Risk & Policy

WHAT IT DOES

What UpdateFunction does on Alibabacloud Dataworks

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

PARAMETERS

Parameter	Type	Required	Description
`Id`	string \| number	Yes	udf函数的唯一标识符
`Spec`	string	Yes	描述这个udf函数的FlowSpec信息
`ProjectId`	number	Yes	DataWorks工作空间的ID

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why UpdateFunction needs a policy

An AI agent can call UpdateFunction faster than any human can review — one bad instruction and it creates or modifies resources in Alibabacloud Dataworks by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

UpdateFunction Rate-limited

UpdateFunction 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": {
    "UpdateFunction": {
      "limits": [
        {
          "counter": "updatefunction_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 Alibabacloud Dataworks, so you can run agents against it safely.

FAQ

Questions about UpdateFunction

What does the UpdateFunction tool do? +

更新数据开发函数信息. It is categorised as a Write tool in the Alibabacloud Dataworks MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does UpdateFunction accept? +

UpdateFunction accepts 3 parameters: Id, Spec, ProjectId. Required: Id, Spec, ProjectId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on UpdateFunction? +

Register the Alibabacloud Dataworks MCP server in PolicyLayer and add a rule for UpdateFunction: 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 Alibabacloud Dataworks. Nothing to install.

What risk level is UpdateFunction? +

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

Can I rate-limit UpdateFunction? +

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

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

UpdateFunction is provided by the Alibabacloud Dataworks MCP server (alibabacloud-dataworks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.