xhs_post · XHS- MCP: Risk & Policy

WHAT IT DOES

What xhs_post does on XHS-MCP

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

WHY IT NEEDS A POLICY

Why xhs_post needs a policy

This tool creates new content on the Xiaohongshu platform by publishing notes. While it does not delete or modify existing content irreversibly (Destructive), and does not involve financial transactions (Financial), it performs a content creation action that creates new data in a live system.

From the tool's definition Tool description states '发布指定的笔记到小红书' which translates to 'publish the specified note to Xiaohongshu'. The terms 'publish' and 'post' are Write operations that create new content on a platform.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

xhs_post Rate-limited

xhs_post 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": {
    "xhs_post": {
      "limits": [
        {
          "counter": "xhs_post_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 XHS-MCP, so you can run agents against it safely.

FAQ

Questions about xhs_post

What does the xhs_post tool do? +

发布指定的笔记到小红书。需要传入笔记的文件名（queue文件名，不包含.txt后缀）. It is categorised as a Write tool in the XHS-MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on xhs_post? +

Register the XHS- MCP server in PolicyLayer and add a rule for xhs_post: 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 XHS-MCP. Nothing to install.

What risk level is xhs_post? +

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

Can I rate-limit xhs_post? +

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

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

xhs_post is provided by the XHS- MCP server (lastkimi/xhs-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.