AI agents call list_by_tag to retrieve information from Douyin Video Knowledge Base 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 filters existing data from the knowledge base by tag without creating, modifying, deleting, or executing any operations. It is a pure read operation with minimal security risk when misused by an AI agent.
From the tool's definition Tool name 'list_by_tag' and description '按标签筛选笔记' (filter notes by tag) indicate a retrieval/filtering operation. Sibling tools (get_note, list_notes, search_notes) confirm this is a query-only server with no modification, deletion, or execution capabilities.
Documented attack patterns abuse exactly the kind of access list_by_tag gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Douyin Video Knowledge Base MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_by_tag:
{
"version": "1",
"default": "deny",
"tools": {
"list_by_tag": {}
}
}list_by_tag is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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按标签筛选笔记。. It is categorised as a Read tool in the Douyin Video Knowledge Base MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Douyin Video Knowledge Base MCP Server MCP server in PolicyLayer and add a rule for list_by_tag: 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 Douyin Video Knowledge Base MCP Server. Nothing to install.
list_by_tag 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_by_tag 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_by_tag. 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_by_tag is provided by the Douyin Video Knowledge Base MCP Server MCP server (skepty2333/douyin-full-stack-summarizer). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 Douyin Video Knowledge Base MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
7 Douyin Video Knowledge Base MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.