Clear all data from the knowledge graph (use with caution!).
AI agents call clear_graph to permanently remove resources in Cardiology Knowledge Graph MCP — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool irreversibly deletes or overwrites all data in the Neo4j knowledge graph without the ability to undo the operation. While not directly causing financial harm, the loss of accumulated medical knowledge graph data (entity relationships, clinical insights) could have significant operational and clinical consequences.
From the tool's definition Tool description explicitly states "Clear all data from the knowledge graph (use with caution!)". The name "clear_graph" combined with the cautionary language indicates irreversible deletion of all graph data.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Clear all data from the knowledge graph (use with caution!). It is categorised as a Destructive tool in the Cardiology Knowledge Graph MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Cardiology Knowledge Graph MCP server in PolicyLayer and add a rule for clear_graph: 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 Cardiology Knowledge Graph MCP. Nothing to install.
clear_graph 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 clear_graph 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 clear_graph. 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.
clear_graph is provided by the Cardiology Knowledge Graph MCP server (ryoureddy/cardiology-knowledge-graph-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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