navigate.goto

THE RISK

High Risk

Why navigate.goto needs a policy

This tool triggers browser navigation to an arbitrary URL, which is an external operation with side effects (loading resources, executing page scripts, setting cookies, etc.). It falls under Execute as it triggers external operations whose effects depend on the URL argument.

From the tool's definition Navigate to a URL in an existing page context

Documented attack patterns abuse exactly the kind of access navigate.goto gives an agent:

POLICY

How to control navigate.goto

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "navigate.goto": {
      "limits": [
        {
          "counter": "navigate.goto_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

navigate.goto 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.

Create a free account and register LCBro — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

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All 11 LCBro tools →

Execute tools on other servers

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Go deeper

High-risk tools in LCBro → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about navigate.goto

What does the navigate.goto tool do? +

Navigate to a URL in an existing page context. It is categorised as a Execute tool in the LCBro MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on navigate.goto? +

Register the LCBro MCP server in PolicyLayer and add a rule for navigate.goto: 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 LCBro. Nothing to install.

What risk level is navigate.goto? +

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

Can I rate-limit navigate.goto? +

Yes. Add a rate_limit block to the navigate.goto 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 navigate.goto completely? +

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

navigate.goto is provided by the LCBro MCP server (lcbro/lcbro-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every LCBro tool call.

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

CHECK YOUR STACK →