mindmap_capture · Mindmap MCP: Risk & Policy

WHAT IT DOES

What mindmap_capture does on Mindmap

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

WHY IT NEEDS A POLICY

Why mindmap_capture needs a policy

This tool creates new data (context summaries) in persistent storage, which is a Write operation. It does not retrieve data (Read), execute arbitrary code (Execute), delete data (Destructive), or involve payments (Financial).

From the tool's definition Tool description states it will 'save a portable context summary from the current session so it can be resumed later' - this creates and persists data. The word 'save' indicates a write operation that modifies the local memory store.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mindmap_capture Rate-limited

mindmap_capture 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": {
    "mindmap_capture": {
      "limits": [
        {
          "counter": "mindmap_capture_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 Mindmap, so you can run agents against it safely.

FAQ

Questions about mindmap_capture

What does the mindmap_capture tool do? +

Silently save a portable context summary from the current session so it can be resumed later in any tool. This is the effortless. It is categorised as a Write tool in the Mindmap MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mindmap_capture? +

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

What risk level is mindmap_capture? +

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

Can I rate-limit mindmap_capture? +

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

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

mindmap_capture is provided by the Mindmap MCP server (@ravi-labs/mindmap-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.