AI agents call delete_bookmark to permanently remove resources in Twikit — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deleting a bookmark is an irreversible removal action. While the tweet itself is unaffected, the bookmark entry is permanently deleted with no undo mechanism. Blast radius is low since only the user's own bookmark list is affected.
From the tool's definition 'Remove a tweet from bookmarks' — permanently removes saved bookmark data
Documented attack patterns abuse exactly the kind of access delete_bookmark gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Twikit, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_bookmark:
{
"version": "1",
"default": "deny",
"hide": [
"delete_bookmark"
]
}delete_bookmark disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
Free to start. No card required.
Remove a tweet from bookmarks. It is categorised as a Destructive tool in the Twikit MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Twikit MCP server in PolicyLayer and add a rule for delete_bookmark: 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 Twikit. Nothing to install.
delete_bookmark 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 delete_bookmark 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 delete_bookmark. 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.
delete_bookmark is provided by the Twikit MCP server (tangivis/twitter-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Twikit, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
59 Twikit tools catalogued and risk-classified — across an index of 43,000+ MCP servers.