cancel_article_sharing

THE RISK

Medium Risk

Why cancel_article_sharing needs a policy

Cancelling sharing modifies the sharing state of an article (removes shared status), which is a reversible write operation — sharing can presumably be re-enabled. It does not delete the article itself, so it is not Destructive. Severity is medium as it affects the visibility/distribution of content.

From the tool's definition Cancels sharing for a specific article

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

POLICY

How to control cancel_article_sharing

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "cancel_article_sharing": {
      "limits": [
        {
          "counter": "cancel_article_sharing_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

cancel_article_sharing stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

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

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More RSS MCP Server tools

Destructive delete_folder Deletes a folder. This does not delete the feeds within the folder. Destructive delete_subscription Deletes one or more feed subscriptions. Write remove_tag_from_all_articles Removes a tag from all articles that have it. Write remove_tag_from_item Removes a specific tag from an article. Write share_article Marks a specific article as a shared item. Write add_subscription Adds a new feed subscription. Write add_tag_to_item Adds a single tag to a specific article. Write add_tags_to_item Adds multiple tags to a specific article.

All 34 RSS MCP Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about cancel_article_sharing

What does the cancel_article_sharing tool do? +

Cancels sharing for a specific article. It is categorised as a Write tool in the RSS MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on cancel_article_sharing? +

Register the RSS MCP Server MCP server in PolicyLayer and add a rule for cancel_article_sharing: 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 MCP Server. Nothing to install.

What risk level is cancel_article_sharing? +

cancel_article_sharing is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit cancel_article_sharing? +

Yes. Add a rate_limit block to the cancel_article_sharing 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 cancel_article_sharing completely? +

Set action: deny in the PolicyLayer policy for cancel_article_sharing. 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 cancel_article_sharing? +

cancel_article_sharing is provided by the RSS MCP Server MCP server (xueli-sherryli/rss-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every RSS MCP Server tool call.

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

CHECK YOUR STACK →