High Risk →

open_browser_search

打开浏览器并搜索关键词, 如果提供url,则打开url,否则使用默认搜索引擎,使用keywords参数指定要搜索的关键词

How to control open_browser_search ↓

What open_browser_search does on PC-MCP

AI agents invoke open_browser_search to trigger actions in PC-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.

High Risk

Why open_browser_search needs a policy

This tool executes an external browser action, either opening a URL or performing a search query. It triggers an external process (browser) whose effects depend on the arguments provided. While not destructive or financial, it can navigate to arbitrary URLs, which could be used to access malicious sites or exfiltrate data via browser navigation.

From the tool's definition 打开浏览器并搜索关键词 (opens browser and searches keywords); if URL provided, opens the URL — triggers external browser operation

Documented attack patterns abuse exactly the kind of access open_browser_search gives an agent:

How to control open_browser_search

PolicyLayer is an MCP gateway — it sits between your AI agents and PC-MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for open_browser_search:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "open_browser_search": {
      "limits": [
        {
          "counter": "open_browser_search_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

open_browser_search 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.

  1. Create a free account and register PC-MCP — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
RATE-LIMIT THIS TOOL →

Free to start. No card required.

Related tools and policies

Go deeper

Questions about open_browser_search

What does the open_browser_search tool do? +

打开浏览器并搜索关键词, 如果提供url,则打开url,否则使用默认搜索引擎,使用keywords参数指定要搜索的关键词. It is categorised as a Execute tool in the PC-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 open_browser_search? +

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

What risk level is open_browser_search? +

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

Can I rate-limit open_browser_search? +

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

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

open_browser_search is provided by the PC- MCP server (shijianzhong/mcp-server-for-pc). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every PC-MCP tool call.

Start from PC-MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

6 PC-MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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