从栈模式ListMemory的顶部弹出元素，遵循后进先出原则。
AI agents use popStackElement to create or update resources in ThinkMem — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ThinkMem environment.
This operation modifies the state of a ListMemory structure by removing elements, constituting a Write-level action. It's not Destructive because pop operations typically return the element and are conceptually reversible (can be re-added), whereas the server's explicit delete operations are irreversible.
From the tool's definition Tool description indicates popping/removing elements from a stack memory structure ('从栈模式ListMemory的顶部弹出元素'). Context shows sibling destructive tools (deleteMemory, deleteListElement, clearList) for comparison.
Documented attack patterns abuse exactly the kind of access popStackElement gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and ThinkMem, and nothing reaches the server without passing your rules. This is the rule we recommend for popStackElement:
{
"version": "1",
"default": "deny",
"tools": {
"popStackElement": {
"limits": [
{
"counter": "popstackelement_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}popStackElement stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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从栈模式ListMemory的顶部弹出元素，遵循后进先出原则。. It is categorised as a Write tool in the ThinkMem MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ThinkMem MCP server in PolicyLayer and add a rule for popStackElement: 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 ThinkMem. Nothing to install.
popStackElement is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the popStackElement 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 popStackElement. 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.
popStackElement is provided by the ThinkMem MCP server (rickonono3/thinkmem). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from ThinkMem, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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28 ThinkMem tools catalogued and risk-classified — across an index of 43,000+ MCP servers.