AI agents call search_notes to retrieve information from RednoteMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a search query against Xiaohongshu notes based on provided keywords and returns results up to a specified limit. It is purely a read operation that retrieves existing data with no side effects, modification, deletion, or execution of external code. The severity is low as misuse would only expose search results, not cause harm or data loss.
From the tool's definition Tool name 'search_notes' and description '根据关键词搜索笔记' (search notes by keywords) with parameters for keywords and result limits indicate data retrieval without modification. No creation, deletion, execution, or financial operations are performed.
Documented attack patterns abuse exactly the kind of access search_notes gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and RednoteMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for search_notes:
{
"version": "1",
"default": "deny",
"tools": {
"search_notes": {}
}
}search_notes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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根据关键词搜索笔记 Args: keywords: 搜索关键词 limit: 返回结果数量限制. It is categorised as a Read tool in the RednoteMCP MCP Server, which means it retrieves data without modifying state.
Register the Rednote MCP server in PolicyLayer and add a rule for search_notes: 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 RednoteMCP. Nothing to install.
search_notes 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 search_notes 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 search_notes. 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.
search_notes is provided by the Rednote MCP server (jonafly/rednotemcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from RednoteMCP, 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.
5 RednoteMCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.