AI agents call lark_get_chat_list to retrieve information from Feishu Enhance without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about group chats without creating, modifying, or deleting any data. It is a pure read operation that queries chat metadata. The blast radius is minimal—leaking knowledge of which chats a bot participates in poses low risk compared to write, execute, or destructive actions.
From the tool's definition Tool name 'lark_get_chat_list' and description '获取机器人所在的群聊列表' (retrieve the list of group chats the bot belongs to) clearly indicates a retrieval operation with no modification or side effects.
Documented attack patterns abuse exactly the kind of access lark_get_chat_list gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Feishu Enhance, and nothing reaches the server without passing your rules. This is the rule we recommend for lark_get_chat_list:
{
"version": "1",
"default": "deny",
"tools": {
"lark_get_chat_list": {}
}
}lark_get_chat_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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获取机器人所在的群聊列表. It is categorised as a Read tool in the Feishu Enhance MCP Server, which means it retrieves data without modifying state.
Register the Feishu Enhance MCP server in PolicyLayer and add a rule for lark_get_chat_list: 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 Feishu Enhance. Nothing to install.
lark_get_chat_list 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 lark_get_chat_list 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 lark_get_chat_list. 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.
lark_get_chat_list is provided by the Feishu Enhance MCP server (jiaxinghit/feishu-enhance-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Feishu Enhance, 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.
24 Feishu Enhance tools catalogued and risk-classified — across an index of 43,000+ MCP servers.