Batch delete memories Args: user_id: User identifier agent_id: Agent identifier run_id: Run/session identifier Returns: JSON formatted string
AI agents call delete_all_memories to permanently remove resources in Mcp Oceanbase — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently deletes memory records without a reversible operation. Batch deletion of 'all' memories for a given user/agent/run represents irreversible data loss. The blast radius is high because an agent misconfigured or compromised could erase all historical context and user data. This is more severe than Write (which is reversible) and qualifies as Destructive.
From the tool's definition Tool name is 'delete_all_memories' with description 'Batch delete memories'. The verb 'delete' combined with 'all' indicates irreversible removal of data at scale.
Risk signalsBulk/mass operation — affects multiple targets
Documented attack patterns abuse exactly the kind of access delete_all_memories gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Oceanbase, and nothing reaches the server without passing your rules. This is the rule we recommend for delete_all_memories:
{
"version": "1",
"default": "deny",
"hide": [
"delete_all_memories"
]
} delete_all_memories disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
Free to start. No card required.
Batch delete memories Args: user_id: User identifier agent_id: Agent identifier run_id: Run/session identifier Returns: JSON formatted string. It is categorised as a Destructive tool in the Mcp Oceanbase MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Mcp Oceanbase MCP server in PolicyLayer and add a rule for delete_all_memories: 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 Oceanbase. Nothing to install.
delete_all_memories 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_all_memories 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_all_memories. 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_all_memories is provided by the Mcp Oceanbase MCP server (oceanbase/awesome-oceanbase-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 134 Mcp Oceanbase tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
134 Mcp Oceanbase tools catalogued and risk-classified — across an index of 42,500+ MCP servers.