List all stored memories, optionally filtered by category. Shows file stats, entry counts, and content preview for each memory category.
AI agents call list_memories to retrieve information from Context Engine MCP Server 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 memory data without side effects. It allows filtering and previewing stored information but performs no writes, deletions, or state changes. The optional filtering parameter does not escalate the risk beyond information retrieval.
From the tool's definition Tool name 'list_memories' and description 'List all stored memories' indicates a retrieval operation. The description explicitly mentions showing 'file stats, entry counts, and content preview' — all read-only operations with no modification, deletion, or…
Documented attack patterns abuse exactly the kind of access list_memories gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Context Engine MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_memories:
{
"version": "1",
"default": "deny",
"tools": {
"list_memories": {}
}
}list_memories is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all stored memories, optionally filtered by category. Shows file stats, entry counts, and content preview for each memory category. It is categorised as a Read tool in the Context Engine MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Context Engine MCP Server 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 Context Engine MCP Server. 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 Context Engine MCP Server MCP server (kirachon/context-engine). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Context Engine MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
50 Context Engine MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.