Medium Risk

obs-save-replay-buffer

Saves the contents of the replay buffer output

How to control obs-save-replay-buffer ↓

AI agents use obs-save-replay-buffer to create or update resources in OBS MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your OBS MCP Server environment.

Medium Risk

This tool creates or exports a new replay file from buffered video data. It is a Write operation because it generates and persists new data (a saved replay file) in a reversible manner—the saved file can be deleted or replaced. It is not Destructive because the replay buffer itself persists and can be saved again.

From the tool's definition Tool name 'obs-save-replay-buffer' and description 'Saves the contents of the replay buffer output' indicate creation of a new file/artifact from existing buffered media.

Documented attack patterns abuse exactly the kind of access obs-save-replay-buffer gives an agent:

PolicyLayer is an MCP gateway — it sits between your AI agents and OBS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for obs-save-replay-buffer:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "obs-save-replay-buffer": {
      "limits": [
        {
          "counter": "obs-save-replay-buffer_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

obs-save-replay-buffer 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.

  1. Create a free account and register OBS MCP Server — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

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Go deeper

What does the obs-save-replay-buffer tool do? +

Saves the contents of the replay buffer output. It is categorised as a Write tool in the OBS MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on obs-save-replay-buffer? +

Register the OBS MCP Server MCP server in PolicyLayer and add a rule for obs-save-replay-buffer: 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 MCP Server. Nothing to install.

What risk level is obs-save-replay-buffer? +

obs-save-replay-buffer is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit obs-save-replay-buffer? +

Yes. Add a rate_limit block to the obs-save-replay-buffer 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 obs-save-replay-buffer completely? +

Set action: deny in the PolicyLayer policy for obs-save-replay-buffer. 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 obs-save-replay-buffer? +

obs-save-replay-buffer is provided by the OBS MCP Server MCP server (royshil/obs-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every OBS MCP Server tool call.

Deterministic rules across all 200 OBS MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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200 OBS MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.

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