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What searchMemos does on Memo
AI agents call searchMemos to retrieve information from Memo without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why searchMemos is rated Low
This tool retrieves or queries memo data based on search criteria. It has no side effects, does not create, modify, delete, or execute code. It is a straightforward Read operation with minimal risk — an agent misusing it can only expose or find existing memos, not alter or destroy them.
From the tool's definition Tool is named 'searchMemos' and described as 'Search memos by keyword and date range' — both indicating a retrieval-only operation with no modification or deletion of data.
Attacks that exploit this kind of access
The rule that runs searchMemos safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Memo, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For searchMemos, this is the rule to start with:
searchMemos is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Memo, apply this rule, and every searchMemos call is checked against it from then on.
Questions about searchMemos
Search memos by keyword and date range. It is categorised as a Read tool in the Memo MCP Server, which means it retrieves data without modifying state.
Register the Memo MCP server in PolicyLayer and add a rule for searchMemos: 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 Memo. Nothing to install.
searchMemos 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 searchMemos 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 searchMemos. 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.
searchMemos is provided by the Memo MCP server (108yen/memo-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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