Critical Risk →

memory_delete

Delete a memory file at /memories/<path>. When the path ends with /, every file beneath the directory is removed. Updates the path index but leaves prior content-addressed blobs in place (the audit history is append-only). Mirrors the delete verb in Anthropic's context-management-2025-06-27 memor...

Risk signalsAccepts file system path (path) · Bulk/mass operation — affects multiple targets

Part of the emem — Earth memory protocol server.

memory_delete can permanently delete data in emem — Earth memory protocol, with no limits today. PolicyLayer puts allow, deny, and rate-limit rules on every call. Live in minutes.

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AI agents may call memory_delete to permanently remove or destroy resources in emem — Earth memory protocol. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. PolicyLayer blocks destructive tools by default and requires explicit human approval before enabling them.

Without a policy, an AI agent could call memory_delete in a loop, permanently destroying resources in emem — Earth memory protocol. There is no undo for destructive operations. PolicyLayer blocks this tool by default and only allows it when a human explicitly approves the action.

Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.

policy.json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "memory_delete"
  ]
}

See the full emem — Earth memory protocol policy for all 81 tools.

Get this rule live on your own emem — Earth memory protocol server in minutes. PolicyLayer enforces it on every call, before it runs.

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These attack patterns abuse exactly the kind of access memory_delete gives an agent. Each links to the full case and the policy that stops it:

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Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so memory_delete only ever does what you allow.

SECURE EMEM — EARTH MEMORY PROTOCOL →

Other destructive tools across the catalogue. The same approach applies to each: deny by default, or require human approval.

What does the memory_delete tool do? +

Delete a memory file at /memories/<path>. When the path ends with /, every file beneath the directory is removed. Updates the path index but leaves prior content-addressed blobs in place (the audit history is append-only). Mirrors the delete verb in Anthropic's context-management-2025-06-27 memory tool spec. When to use: Call when the LLM issues a delete against a memory file or subdirectory it no longer needs. Existing receipts citing the old file_cid stay verifiable — the blob is content-addressed, only the path → file_cid index forgets.. It is categorised as a Destructive tool in the emem — Earth memory protocol MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on memory_delete? +

Register the emem — Earth memory protocol MCP server in PolicyLayer and add a rule for memory_delete: 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 emem — Earth memory protocol. Nothing to install.

What risk level is memory_delete? +

memory_delete is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit memory_delete? +

Yes. Add a rate_limit block to the memory_delete 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.

How do I block memory_delete completely? +

Set action: deny in the PolicyLayer policy for memory_delete. 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.

What MCP server provides memory_delete? +

memory_delete is provided by the emem — Earth memory protocol MCP server (oci:ghcr.io/vortx-ai/emem:latest). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every emem — Earth memory protocol tool call.

Deterministic rules across all 81 emem — Earth memory protocol tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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