Remove a node (and all its connected edges) from the diagram.
AI agents call remove_node to permanently remove resources in Flowchart MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently deletes a node and cascades to remove all connected edges. There is no indication of an undo mechanism, making it irreversible. The blast radius is high because removing a node can cascade to destroy multiple edges and structurally alter the entire diagram.
From the tool's definition 'Remove a node (and all its connected edges) from the diagram' — irreversibly deletes both the node and all associated edges
Attacks that exploit this kind of access
Remove a node (and all its connected edges) from the diagram. It is categorised as a Destructive tool in the Flowchart MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Flowchart MCP server in PolicyLayer and add a rule for remove_node: 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 Flowchart MCP. Nothing to install.
remove_node 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 remove_node 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 remove_node. 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.
remove_node is provided by the Flowchart MCP server (zafer-liu/flowchart_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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