List active memories that have not been updated recently. Useful for reviewing potentially outdated project knowledge.
AI agents call review_stale_memories to retrieve information from OpenMemBrain without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and presents information about memories that have not been recently updated. It performs no side effects, makes no modifications to the memory system, executes no code, and deletes nothing. It is purely a read operation for diagnostic or informational purposes. Severity is low because reading stale memory metadata poses minimal risk to system integrity or security.
From the tool's definition Tool name 'review_stale_memories' and description 'List active memories' indicate a query/retrieval operation. The verb 'list' and 'review' are read-only operations that retrieve and display data without modifying, deleting, or executing actions.
Attacks that exploit this kind of access
List active memories that have not been updated recently. Useful for reviewing potentially outdated project knowledge. It is categorised as a Read tool in the OpenMemBrain MCP Server, which means it retrieves data without modifying state.
Register the OpenMemBrain MCP server in PolicyLayer and add a rule for review_stale_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 OpenMemBrain. Nothing to install.
review_stale_memories is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the review_stale_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 review_stale_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.
review_stale_memories is provided by the OpenMemBrain MCP server (mohamadalhusseinie/openmembrain). 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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