vicon_set_stream_mode · Vicon DataStream MCP Server MCP

WHAT IT DOES

What vicon_set_stream_mode does on Vicon DataStream MCP Server

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

WHY IT NEEDS A POLICY

Why vicon_set_stream_mode needs a policy

This tool configures/sets the streaming mode for the Vicon motion capture data stream. It modifies a system configuration setting (stream mode), which is a reversible write operation. Misuse could disrupt data capture sessions but is not destructive or irreversible.

From the tool's definition 设置数据流模式 (Set data stream mode)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

vicon_set_stream_mode Rate-limited

vicon_set_stream_mode 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": {
    "vicon_set_stream_mode": {
      "limits": [
        {
          "counter": "vicon_set_stream_mode_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 Vicon DataStream MCP Server, so you can run agents against it safely.

FAQ

Questions about vicon_set_stream_mode

What does the vicon_set_stream_mode tool do? +

设置数据流模式. It is categorised as a Write tool in the Vicon DataStream 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 vicon_set_stream_mode? +

Register the Vicon DataStream MCP Server MCP server in PolicyLayer and add a rule for vicon_set_stream_mode: 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 Vicon DataStream MCP Server. Nothing to install.

What risk level is vicon_set_stream_mode? +

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

Can I rate-limit vicon_set_stream_mode? +

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

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

vicon_set_stream_mode is provided by the Vicon DataStream MCP Server MCP server (ros-claw/vicon-datastream-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.