Delete all memories that have any of the specified tags. Provides preview for safety.
AI agents call delete_memories_by_tags to permanently remove resources in Heimdall MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes stored memory records from the system. While a preview is provided for safety, the core action is irreversible deletion of data, which classifies it as Destructive rather than merely Write.
From the tool's definition Tool name 'delete_memories_by_tags' and description 'Delete all memories that have any of the specified tags' explicitly indicates irreversible deletion of data. The preview feature mitigates but does not eliminate the destructive nature.
Attacks that exploit this kind of access
Delete all memories that have any of the specified tags. Provides preview for safety. It is categorised as a Destructive tool in the Heimdall MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Heimdall MCP Server MCP server in PolicyLayer and add a rule for delete_memories_by_tags: 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 Heimdall MCP Server. Nothing to install.
delete_memories_by_tags 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_memories_by_tags 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_memories_by_tags. 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_memories_by_tags is provided by the Heimdall MCP Server MCP server (lcbcfoo/heimdall-mcp-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.
Teams ship this data inside their own products. See what a licence covers →