scf_update_scoped_control · Scf MCP: Risk & Policy

WHAT IT DOES

What scf_update_scoped_control does on Scf

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

WHY IT NEEDS A POLICY

Why scf_update_scoped_control needs a policy

This is a Write operation: it modifies existing data (a scoped control) reversibly. If misused by an agent, it could alter security control configurations, potentially weakening compliance posture or creating audit inconsistencies, but changes can be reverted. It does not delete data (Destructive), execute arbitrary code (Execute), move money (Financial), or retrieve data only (Read).

From the tool's definition Tool name 'scf_update_scoped_control' and description 'Update a scoped control' indicate modification of an existing control configuration or state.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

scf_update_scoped_control Rate-limited

scf_update_scoped_control 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": {
    "scf_update_scoped_control": {
      "limits": [
        {
          "counter": "scf_update_scoped_control_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 Scf, so you can run agents against it safely.

FAQ

Questions about scf_update_scoped_control

What does the scf_update_scoped_control tool do? +

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

How do I enforce a policy on scf_update_scoped_control? +

Register the Scf MCP server in PolicyLayer and add a rule for scf_update_scoped_control: 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 Scf. Nothing to install.

What risk level is scf_update_scoped_control? +

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

Can I rate-limit scf_update_scoped_control? +

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

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

scf_update_scoped_control is provided by the Scf MCP server (mcp-server-scf). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.