bucket_list · Personal Brain MCP: Risk & Policy

WHAT IT DOES

What bucket_list does on Personal Brain

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

WHY IT NEEDS A POLICY

Why bucket_list needs a policy

The tool supports reading (get filtered list) but also write operations: adding new items, updating status, and marking items complete. These are reversible modifications to personal data. The most severe applicable category is Write. Severity is medium since misuse could alter personal life goals data, but no irreversible deletion or financial impact is implied.

From the tool's definition add, update status, or mark complete

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

bucket_list Rate-limited

bucket_list 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": {
    "bucket_list": {
      "limits": [
        {
          "counter": "bucket_list_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 Personal Brain, so you can run agents against it safely.

FAQ

Questions about bucket_list

What does the bucket_list tool do? +

your life bucket list (travel, skills, experiences). Get filtered list, add, update status, or mark complete. It is categorised as a Write tool in the Personal Brain MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on bucket_list? +

Register the Personal Brain MCP server in PolicyLayer and add a rule for bucket_list: 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 Personal Brain. Nothing to install.

What risk level is bucket_list? +

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

Can I rate-limit bucket_list? +

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

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

bucket_list is provided by the Personal Brain MCP server (phantomts/personal-brain-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.