AI agents call export_har to retrieve information from MCP Camoufox without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads and exports recorded network traffic data into a HAR (HTTP Archive) format file. It retrieves existing captured data without modifying state. However, HAR files can contain sensitive data including cookies, auth tokens, request/response bodies, and credentials captured during browser sessions, making misuse moderately impactful.
From the tool's definition Export network traffic as HAR file
Documented attack patterns abuse exactly the kind of access export_har gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and MCP Camoufox, and nothing reaches the server without passing your rules. This is the rule we recommend for export_har:
{
"version": "1",
"default": "deny",
"tools": {
"export_har": {}
}
}export_har is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Export network traffic as HAR file. It is categorised as a Read tool in the MCP Camoufox MCP Server, which means it retrieves data without modifying state.
Register the MCP Camoufox MCP server in PolicyLayer and add a rule for export_har: 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 MCP Camoufox. Nothing to install.
export_har is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the export_har 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.
Set action: deny in the PolicyLayer policy for export_har. 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.
export_har is provided by the MCP Camoufox MCP server (robithyusuf/mcp-camoufox). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from MCP Camoufox, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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102 MCP Camoufox tools catalogued and risk-classified — across an index of 43,000+ MCP servers.