set_end · vidMagik- MCP: Risk & Policy

WHAT IT DOES

What set_end does on vidMagik-mcp

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

WHY IT NEEDS A POLICY

Why set_end needs a policy

The tool modifies an existing clip's end time parameter, which is a data modification operation. This falls under Write (creates or modifies data reversibly) rather than Execute or Destructive. While it alters video content duration, the change is reversible by setting a different end time.

From the tool's definition Tool name 'set_end' combined with description 'Set clip end time' indicates modification of clip properties. This is a reversible change to video metadata/structure rather than deletion or execution of arbitrary operations.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_end Rate-limited

set_end 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_end": {
      "limits": [
        {
          "counter": "set_end_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 vidMagik-mcp, so you can run agents against it safely.

FAQ

Questions about set_end

What does the set_end tool do? +

Set clip end time. It is categorised as a Write tool in the vidMagik-mcp 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_end? +

Register the vidMagik- MCP server in PolicyLayer and add a rule for set_end: 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 vidMagik-mcp. Nothing to install.

What risk level is set_end? +

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

Can I rate-limit set_end? +

Yes. Add a rate_limit block to the set_end 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_end completely? +

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

set_end is provided by the vidMagik- MCP server (vizionik25/vidmagik-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.