AI agents call get_feed_groups to retrieve information from FreshRSS MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and lists feed group metadata without modifying, deleting, or executing any operations. It is purely informational and presents minimal risk if misused by an AI agent. The worst-case scenario would be unauthorized access to feed organization data, which is a read-access concern, not destructive or dangerous.
From the tool's definition Tool name 'get_feed_groups' and description 'Get feed groups' indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access get_feed_groups gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FreshRSS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_feed_groups:
{
"version": "1",
"default": "deny",
"tools": {
"get_feed_groups": {}
}
}get_feed_groups is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get feed groups. It is categorised as a Read tool in the FreshRSS MCP Server MCP Server, which means it retrieves data without modifying state.
Register the FreshRSS MCP Server MCP server in PolicyLayer and add a rule for get_feed_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 FreshRSS MCP Server. Nothing to install.
get_feed_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_feed_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_feed_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_feed_groups is provided by the FreshRSS MCP Server MCP server (rakeshgangwar/freshrss-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from FreshRSS MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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8 FreshRSS MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.