add_note_to_subsample · RSpace MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_note_to_subsample does on RSpace MCP Server

AI agents use add_note_to_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 add_note_to_subsample needs a policy

This tool modifies existing data (the subsample) by appending annotations or observations. The modification is reversible—annotations can typically be edited or removed—making it a Write operation rather than Destructive. The context of RSpace (a research data management system) and the pattern of sibling tools confirm this classification.

From the tool's definition The tool description states it 'Adds annotations or observations to a specific subsample,' which indicates creation or modification of data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_note_to_subsample Rate-limited

add_note_to_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": {
    "add_note_to_subsample": {
      "limits": [
        {
          "counter": "add_note_to_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 add_note_to_subsample

What does the add_note_to_subsample tool do? +

Adds annotations or observations to a specific subsample. 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 add_note_to_subsample? +

Register the RSpace MCP Server MCP server in PolicyLayer and add a rule for add_note_to_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 add_note_to_subsample? +

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

Can I rate-limit add_note_to_subsample? +

Yes. Add a rate_limit block to the add_note_to_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 add_note_to_subsample completely? +

Set action: deny in the PolicyLayer policy for add_note_to_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 add_note_to_subsample? +

add_note_to_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.