Remove a tweet from bookmarks
AI agents call bookmarks.remove to permanently remove resources in X MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool removes a bookmark, which is a destructive operation that cannot be undone through this API. While the underlying tweet is not deleted (only the bookmark association), the removal of the bookmark itself is irreversible without re-adding it. Severity is medium as the blast radius is limited to bookmark management rather than content or data loss.
From the tool's definition 'Remove a tweet from bookmarks' — removing a bookmark is an irreversible deletion of a saved reference
Attacks that exploit this kind of access
Remove a tweet from bookmarks. It is categorised as a Destructive tool in the X MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the X MCP Server MCP server in PolicyLayer and add a rule for bookmarks.remove: 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 X MCP Server. Nothing to install.
bookmarks.remove is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the bookmarks.remove 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 bookmarks.remove. 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.
bookmarks.remove is provided by the X MCP Server MCP server (tomaitagaki/x-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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