update_me · Repsona MCP: Risk & Policy

WHAT IT DOES

What update_me does on Repsona

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

WHY IT NEEDS A POLICY

Why update_me needs a policy

This tool modifies user profile or personal data reversibly. It does not create new resources (Write vs Execute distinction), nor does it delete data (Destructive). The scope is limited to the authenticated user's own information, reducing blast radius compared to system-wide modifications.

From the tool's definition Tool name 'update_me' and description '自分の情報を更新します' (updates one's own information) indicate data modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_me Rate-limited

update_me 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": {
    "update_me": {
      "limits": [
        {
          "counter": "update_me_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 Repsona, so you can run agents against it safely.

FAQ

Questions about update_me

What does the update_me tool do? +

自分の情報を更新します. It is categorised as a Write tool in the Repsona MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_me? +

Register the Repsona MCP server in PolicyLayer and add a rule for update_me: 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 Repsona. Nothing to install.

What risk level is update_me? +

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

Can I rate-limit update_me? +

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

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

update_me is provided by the Repsona MCP server (@bellx2/repsona-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.