Connect to your real Chrome browser via CDP, capture its auth cookies, and save them as a Leapfrog profile. This gives you real Google auth, reCAPTCHA trust, and all your logged-in sessions — but in an isolated Leapfrog session, not your real browser. Start Chrome with: chrome --remote-debugging-...
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AI agents use profile_import_from_chrome to create or modify resources in Leapfrog. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call profile_import_from_chrome repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Leapfrog.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"profile_import_from_chrome": {
"limits": [
{
"counter": "profile_import_from_chrome_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Leapfrog policy for all 37 tools.
These attack patterns abuse exactly the kind of access profile_import_from_chrome gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Connect to your real Chrome browser via CDP, capture its auth cookies, and save them as a Leapfrog profile. This gives you real Google auth, reCAPTCHA trust, and all your logged-in sessions — but in an isolated Leapfrog session, not your real browser. Start Chrome with: chrome --remote-debugging-port=9222. It is categorised as a Write tool in the Leapfrog MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Leapfrog MCP server in PolicyLayer and add a rule for profile_import_from_chrome: 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 Leapfrog. Nothing to install.
profile_import_from_chrome is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the profile_import_from_chrome 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 profile_import_from_chrome. 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.
profile_import_from_chrome is provided by the Leapfrog MCP server (leapfrog-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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