AI agents call list_feeds to retrieve information from Rss Feeds without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays metadata about existing RSS feed configurations. It performs no write, deletion, code execution, or financial operations. The blast radius of misuse is minimal—an attacker gains only visibility into what feeds are configured, not the ability to modify feeds, delete them, or alter any system state. It falls squarely into the Read category.
From the tool's definition Tool is named 'list_feeds' and described as 'List all configured RSS feeds with their categories' — a pure data retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List all configured RSS feeds with their categories. It is categorised as a Read tool in the Rss Feeds MCP Server, which means it retrieves data without modifying state.
Register the Rss Feeds MCP server in PolicyLayer and add a rule for list_feeds: 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 Rss Feeds. Nothing to install.
list_feeds 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_feeds 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_feeds. 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_feeds is provided by the Rss Feeds MCP server (lionkiii/rss-feeds-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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