AI agents call maimemo_get_due_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 study records from Maimemo based on filtering criteria (next study date, spelling list, limit, count-only mode). It performs a query operation on read-only data with no side effects, mutations, or destructive capabilities. The blast radius is minimal—a misused query can only expose or retrieve existing data within the user's study records, posing no financial, destructive, or execution risk.
From the tool's definition The tool is described as 'Query Maimemo study records' and belongs to a 'read-only MCP server' that 'provides access to' study data. The verb 'query' and the read-only nature of the server indicate retrieval without modification.
Attacks that exploit this kind of access
Query Maimemo study records by next study date, spelling list, limit, or count-only mode. 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_get_due_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_get_due_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_get_due_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_get_due_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_get_due_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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