bookmark_post · USCardForum MCP Server MCP: Risk & Policy

WHAT IT DOES

What bookmark_post does on USCardForum MCP Server

AI agents use bookmark_post to create or update resources in USCardForum MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your USCardForum MCP Server environment.

WHY IT NEEDS A POLICY

Why bookmark_post needs a policy

Bookmarking is a reversible, user-scoped write action that adds metadata to user accounts without affecting core content or causing irreversible changes. Severity is low because misuse would only affect the agent's own or target user's bookmark state, with minimal blast radius and no financial, destructive, or system-level impact.

From the tool's definition Tool name 'bookmark_post' indicates a write operation that modifies user state (bookmarks). Description is empty, but the tool name and server context (Discourse-based community with 'authenticated actions like bookmarks') clearly signal data modification…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

bookmark_post Rate-limited

bookmark_post 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.

View as policy code

policy.json

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

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches USCardForum MCP Server, so you can run agents against it safely.

FAQ

Questions about bookmark_post

What does the bookmark_post tool do? +

bookmark_post. It is categorised as a Write tool in the USCardForum 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 bookmark_post? +

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

What risk level is bookmark_post? +

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

Can I rate-limit bookmark_post? +

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

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

bookmark_post is provided by the USCardForum MCP Server MCP server (raidenrock/uscardforum-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.