store_result · Loop MCP Server MCP: Risk & Policy

WHAT IT DOES

What store_result does on Loop MCP Server

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

WHY IT NEEDS A POLICY

Why store_result needs a policy

This tool writes/saves processing results to storage. It creates or modifies data in a reversible manner (results can be overwritten or reset, as evidenced by the sibling 'reset' tool). No code execution, deletion, or financial operations are involved. Severity is low because it only stores intermediate processing results within the loop context.

From the tool's definition 'Store the result of processing the current item or batch of items'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

store_result Rate-limited

store_result 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": {
    "store_result": {
      "limits": [
        {
          "counter": "store_result_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 Loop MCP Server, so you can run agents against it safely.

FAQ

Questions about store_result

What does the store_result tool do? +

Store the result of processing the current item or batch of items. It is categorised as a Write tool in the Loop 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 store_result? +

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

What risk level is store_result? +

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

Can I rate-limit store_result? +

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

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

store_result is provided by the Loop MCP Server MCP server (smogili1/loop_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.