van_init · Memory Bank MCP Server MCP: Risk & Policy

WHAT IT DOES

What van_init does on Memory Bank MCP Server

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

WHY IT NEEDS A POLICY

Why van_init needs a policy

An AI agent can call van_init faster than any human can review — one bad instruction and it creates or modifies resources in Memory Bank MCP Server by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

van_init Rate-limited

van_init 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": {
    "van_init": {
      "limits": [
        {
          "counter": "van_init_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 Memory Bank MCP Server, so you can run agents against it safely.

FAQ

Questions about van_init

What does the van_init tool do? +

初始化项目，检查或创建必要文件. It is categorised as a Write tool in the Memory Bank 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 van_init? +

Register the Memory Bank MCP Server MCP server in PolicyLayer and add a rule for van_init: 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 Memory Bank MCP Server. Nothing to install.

What risk level is van_init? +

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

Can I rate-limit van_init? +

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

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

van_init is provided by the Memory Bank MCP Server MCP server (yywdandan/memory-bank-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.