AI agents call search_memos to retrieve information from Memos without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Search is a pure read operation that queries and retrieves memo data without modifying, executing code, or deleting anything. The minimal blast radius is typical of read-only operations—worst case is information disclosure of existing memos.
From the tool's definition Tool named 'search_memos' with description indicating search functionality. Server description confirms it 'read, search, filter' memos. Search operations retrieve data without side effects.
Attacks that exploit this kind of access
搜索备忘录. It is categorised as a Read tool in the Memos MCP Server, which means it retrieves data without modifying state.
Register the Memos MCP server in PolicyLayer and add a rule for search_memos: 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 Memos. Nothing to install.
search_memos 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_memos 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_memos. 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_memos is provided by the Memos MCP server (yuzhi-jiang/memos-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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