xhs_login · XHS- MCP: Risk & Policy

WHAT IT DOES

What xhs_login does on XHS-MCP

AI agents invoke xhs_login to trigger actions in XHS-MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why xhs_login needs a policy

This tool triggers an external browser automation action (opening a browser window and performing a login flow). It is not a simple read or write of data, but an execution of an interactive browser-based operation. The blast radius is medium — misuse could result in unauthorized account access or session hijacking, but it does not directly delete data or move money.

From the tool's definition 登录小红书账号（会打开浏览器窗口进行登录） — explicitly opens a browser window to perform login via browser automation

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

xhs_login Rate-limited

xhs_login stays usable, but rate-capped — a runaway agent can't fire it dozens of times 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_login": {
      "limits": [
        {
          "counter": "xhs_login_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-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_login

What does the xhs_login tool do? +

登录小红书账号（会打开浏览器窗口进行登录）. It is categorised as a Execute tool in the XHS-MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on xhs_login? +

Register the XHS- MCP server in PolicyLayer and add a rule for xhs_login: 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_login? +

xhs_login is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit xhs_login? +

Yes. Add a rate_limit block to the xhs_login 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_login completely? +

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

xhs_login 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.