Delete multiple entities and their associated relations from the knowledge graph
AI agents call delete_entities to permanently remove resources in MCP Memory Server - HTTP Streaming — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool performs irreversible deletion of data (entities and relations) from a knowledge graph. Deletion operations are inherently destructive and non-recoverable. An AI agent misusing this tool could permanently erase critical knowledge base structures, causing data loss that impacts the entire graph. High severity due to cascading effects on related data and potential loss of valuable interconnected information.
From the tool's definition Tool name 'delete_entities' combined with description 'Delete multiple entities and their associated relations from the knowledge graph' indicates irreversible deletion of data.
Attacks that exploit this kind of access
Delete multiple entities and their associated relations from the knowledge graph. It is categorised as a Destructive tool in the MCP Memory Server - HTTP Streaming MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the MCP Memory Server - HTTP Streaming MCP server in PolicyLayer and add a rule for delete_entities: 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 MCP Memory Server - HTTP Streaming. Nothing to install.
delete_entities 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_entities 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_entities. 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_entities is provided by the MCP Memory Server - HTTP Streaming MCP server (songlairui/mcp-memory-server). 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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