set_profile · Obs MCP: Risk & Policy

WHAT IT DOES

What set_profile does on Obs

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

WHY IT NEEDS A POLICY

Why set_profile needs a policy

This tool performs a reversible state change (switching profiles) rather than executing arbitrary operations or irreversibly destroying data. The impact is medium severity because a misconfigured profile switch could disrupt ongoing streams or recordings, but the change is easily reverted by switching back to the previous profile.

From the tool's definition Tool description states 'Switch to a different OBS profile (stream settings, encoder config, etc.)' - this modifies active configuration state in OBS Studio by selecting a different profile, which affects how streaming and recording will behave.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_profile Rate-limited

set_profile 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": {
    "set_profile": {
      "limits": [
        {
          "counter": "set_profile_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 Obs, so you can run agents against it safely.

FAQ

Questions about set_profile

What does the set_profile tool do? +

Switch to a different OBS profile (stream settings, encoder config, etc.). It is categorised as a Write tool in the Obs MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on set_profile? +

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

What risk level is set_profile? +

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

Can I rate-limit set_profile? +

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

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

set_profile is provided by the Obs MCP server (larscangit/obs-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.