AI agents call get_all_groups to retrieve information from Philips Hue MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns information about existing light groups without creating, modifying, deleting, or executing any operations. It is a simple read operation with minimal risk—at most, it could reveal the configuration of smart lights, which has negligible security impact.
From the tool's definition Tool name 'get_all_groups' and description 'Get information about all light groups' indicate a retrieval operation with no modification or side effects.
Documented attack patterns abuse exactly the kind of access get_all_groups gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Philips Hue MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_all_groups:
{
"version": "1",
"default": "deny",
"tools": {
"get_all_groups": {}
}
}get_all_groups is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Get information about all light groups. It is categorised as a Read tool in the Philips Hue MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Philips Hue MCP Server MCP server in PolicyLayer and add a rule for get_all_groups: 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 Philips Hue MCP Server. Nothing to install.
get_all_groups 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 get_all_groups 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 get_all_groups. 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.
get_all_groups is provided by the Philips Hue MCP Server MCP server (thomasrohde/hue-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Philips Hue MCP Server, 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.
23 Philips Hue MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.