AI agents call list_memory_versions to retrieve information from Work Memory MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only retrieval operation that lists version history of stored memories. It has no side effects, does not modify, delete, or execute any operations—it simply queries and returns data. The Korean description '조회합니다' (inquire/retrieve) confirms retrieval semantics. Classification as Read is appropriate for low-risk querying operations.
From the tool's definition Tool name 'list_memory_versions' and description indicate it 'retrieves' or 'queries' (조회 = inquiry/query in Korean) all versions of a memory without modification.
Documented attack patterns abuse exactly the kind of access list_memory_versions gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Work Memory MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_memory_versions:
{
"version": "1",
"default": "deny",
"tools": {
"list_memory_versions": {}
}
}list_memory_versions is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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메모리의 모든 버전 목록을 조회합니다. It is categorised as a Read tool in the Work Memory MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Work Memory MCP Server MCP server in PolicyLayer and add a rule for list_memory_versions: 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 Work Memory MCP Server. Nothing to install.
list_memory_versions 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_memory_versions 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_memory_versions. 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_memory_versions is provided by the Work Memory MCP Server MCP server (moontmsai/work-memory-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Work Memory MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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24 Work Memory MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.