Get a list of all official Flet extension packages (e.g. flet-audio, flet-video).
AI agents call list_official_packages to retrieve information from Flet without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries a static list of available packages without side effects. It is a straightforward informational read operation that poses minimal security risk even if invoked by an AI agent.
From the tool's definition Tool name includes 'list' and description states 'Get a list of all official Flet extension packages' — pure data retrieval with no modification, deletion, execution, or financial impact.
Documented attack patterns abuse exactly the kind of access list_official_packages gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Flet, and nothing reaches the server without passing your rules. This is the rule we recommend for list_official_packages:
{
"version": "1",
"default": "deny",
"tools": {
"list_official_packages": {}
}
}list_official_packages is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get a list of all official Flet extension packages (e.g. flet-audio, flet-video). It is categorised as a Read tool in the Flet MCP Server, which means it retrieves data without modifying state.
Register the Flet MCP server in PolicyLayer and add a rule for list_official_packages: 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 Flet. Nothing to install.
list_official_packages 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 list_official_packages 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 list_official_packages. 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.
list_official_packages is provided by the Flet MCP server (nwokike/flet-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Flet, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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6 Flet tools catalogued and risk-classified — across an index of 43,000+ MCP servers.