split_subsample · RSpace MCP Server MCP: Risk & Policy

WHAT IT DOES

What split_subsample does on RSpace MCP Server

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

WHY IT NEEDS A POLICY

Why split_subsample needs a policy

This tool creates new subsample records by dividing an existing subsample, which is a reversible data modification operation (the original subsample structure is altered and new ones are generated). It does not irreversibly delete data (hence not Destructive), execute arbitrary code (hence not Execute), or involve financial transactions. The operation modifies research data in RSpace, making it a Write-category tool.

From the tool's definition Tool name is 'split_subsample' and description states it 'Divides a subsample into multiple new subsamples', indicating creation of new data records from an existing one.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

split_subsample Rate-limited

split_subsample 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": {
    "split_subsample": {
      "limits": [
        {
          "counter": "split_subsample_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 RSpace MCP Server, so you can run agents against it safely.

FAQ

Questions about split_subsample

What does the split_subsample tool do? +

Divides a subsample into multiple new subsamples. It is categorised as a Write tool in the RSpace 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 split_subsample? +

Register the RSpace MCP Server MCP server in PolicyLayer and add a rule for split_subsample: 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 RSpace MCP Server. Nothing to install.

What risk level is split_subsample? +

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

Can I rate-limit split_subsample? +

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

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

split_subsample is provided by the RSpace MCP Server MCP server (rspace-os/rspace-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.