place_stone · Digital Zen Garden (數位枯山水) MCP Server MCP

WHAT IT DOES

What place_stone does on Digital Zen Garden (數位枯山水) MCP Server

AI agents use place_stone to create or update resources in Digital Zen Garden (數位枯山水) MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Digital Zen Garden (數位枯山水) MCP Server environment.

WHY IT NEEDS A POLICY

Why place_stone needs a policy

This tool creates/modifies data by placing a stone in the ASCII Zen garden. It is a reversible write operation with minimal blast radius - it only affects a virtual, in-memory ASCII garden state with no external systems or real-world consequences.

From the tool's definition place_stone - '在花園中放置石頭' (Place a stone in the garden)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

place_stone Rate-limited

place_stone 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": {
    "place_stone": {
      "limits": [
        {
          "counter": "place_stone_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 Digital Zen Garden (數位枯山水) MCP Server, so you can run agents against it safely.

FAQ

Questions about place_stone

What does the place_stone tool do? +

在花園中放置石頭。. It is categorised as a Write tool in the Digital Zen Garden (數位枯山水) 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 place_stone? +

Register the Digital Zen Garden (數位枯山水) MCP Server MCP server in PolicyLayer and add a rule for place_stone: 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 Digital Zen Garden (數位枯山水) MCP Server. Nothing to install.

What risk level is place_stone? +

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

Can I rate-limit place_stone? +

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

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

place_stone is provided by the Digital Zen Garden (數位枯山水) MCP Server MCP server (simonliu-moltbot/mcp-daily-2026-01-30). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.