fetchRssFeedsByCategory

THE RISK

Low Risk

Why fetchRssFeedsByCategory needs a policy

This tool retrieves and queries RSS feed articles filtered by category. It performs a read-only operation on pre-configured feeds, returning data to the user with no side effects, modifications, or external state changes. No destructive, financial, or code execution capabilities are involved.

From the tool's definition Tool name 'fetchRssFeedsByCategory' and description 'Fetch articles from configured RSS feeds by category' indicate a retrieval operation with no modification or deletion of data.

Documented attack patterns abuse exactly the kind of access fetchRssFeedsByCategory gives an agent:

POLICY

How to control fetchRssFeedsByCategory

PolicyLayer is an MCP gateway — it sits between your AI agents and MCP-RSS-Crawler, and nothing reaches the server without passing your rules. This is the rule we recommend for fetchRssFeedsByCategory:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "fetchRssFeedsByCategory": {}
  }
}

fetchRssFeedsByCategory is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register MCP-RSS-Crawler — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More MCP-RSS-Crawler tools

Destructive removeKeyword Remove an interest keyword from the database Destructive removeRssFeed Remove an RSS feed from the database Execute cancelCrawl Cancel an asynchronous crawl job Execute asyncCrawlWebsite Start an asynchronous crawl of a website Write addKeyword Add a new interest keyword to the database Write addRssFeed Add a new RSS feed to the database Write crawlWebsite Crawl a website and save all pages to the database Read checkCrawlStatus Check the status of an asynchronous crawl

All 18 MCP-RSS-Crawler tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about fetchRssFeedsByCategory

What does the fetchRssFeedsByCategory tool do? +

Fetch articles from configured RSS feeds by category. It is categorised as a Read tool in the MCP-RSS-Crawler MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on fetchRssFeedsByCategory? +

Register the MCP-RSS-Crawler MCP server in PolicyLayer and add a rule for fetchRssFeedsByCategory: 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 MCP-RSS-Crawler. Nothing to install.

What risk level is fetchRssFeedsByCategory? +

fetchRssFeedsByCategory is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit fetchRssFeedsByCategory? +

Yes. Add a rate_limit block to the fetchRssFeedsByCategory 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.

How do I block fetchRssFeedsByCategory completely? +

Set action: deny in the PolicyLayer policy for fetchRssFeedsByCategory. 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.

What MCP server provides fetchRssFeedsByCategory? +

fetchRssFeedsByCategory is provided by the MCP-RSS-Crawler MCP server (mshk/mcp-rss-crawler). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every MCP-RSS-Crawler tool call.

Start from MCP-RSS-Crawler, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →