AI agents call list_memories to retrieve information from OmniHub without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays stored memories with optional filtering. It performs a read-only query operation with no side effects—it neither modifies, deletes, nor executes code. The filtering parameter is constrained to category selection, which does not alter underlying data. This is a straightforward data retrieval function matching the 'Read' category definition.
From the tool's definition Tool name 'list_memories' and description 'Lists stored memories, optionally filtered by category' indicate retrieval/querying of data with no modification or deletion.
Attacks that exploit this kind of access
Lists stored memories, optionally filtered by category. It is categorised as a Read tool in the OmniHub MCP Server, which means it retrieves data without modifying state.
Register the OmniHub MCP server in PolicyLayer and add a rule for list_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 OmniHub. Nothing to install.
list_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 list_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 list_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.
list_memories is provided by the OmniHub MCP server (malharrrr/omnihub). 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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