AI agents call maimemo_list_today_words to retrieve information from Maimemo without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves today's word list from a study/learning platform. It performs a read-only query operation with no side effects, no data modification, and no execution of external code. The server is explicitly described as read-only, and all sibling tools (maimemo_find_vocabulary, maimemo_get_due_words, maimemo_get_notepad, maimemo_get_today_progress, maimemo_list_notepads) are similarly read operations.
From the tool's definition Tool name 'maimemo_list_today_words' and server description stating 'read-only MCP server' and 'List today' description indicate data retrieval with no modification capability.
Attacks that exploit this kind of access
List today. It is categorised as a Read tool in the Maimemo MCP Server, which means it retrieves data without modifying state.
Register the Maimemo MCP server in PolicyLayer and add a rule for maimemo_list_today_words: 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 Maimemo. Nothing to install.
maimemo_list_today_words 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 maimemo_list_today_words 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 maimemo_list_today_words. 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.
maimemo_list_today_words is provided by the Maimemo MCP server (xiandan-erizo/maimemo-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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