AI agents call get_unread 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 unread items from FreshRSS feeds without modifying, deleting, or executing any operations. It is a pure read operation with no side effects, matching the Read category definition. Severity is low as unauthorized access to feed items presents minimal risk compared to destructive or financial operations.
From the tool's definition Tool name 'get_unread' and description 'Get unread items' indicate data retrieval with no modification. Server description confirms it allows 'fetching unread items' as a read operation.
Documented attack patterns abuse exactly the kind of access get_unread 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_unread:
{
"version": "1",
"default": "deny",
"tools": {
"get_unread": {}
}
}get_unread is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get unread items. 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_unread: 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_unread 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_unread 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_unread. 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_unread 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.