Search memories using semantic similarity
AI agents call search_memory to retrieve information from memU MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs semantic search across stored memories, which is a read-only operation that retrieves information without side effects. It does not create, modify, delete, or execute any actions. The blast radius is minimal—misuse could expose sensitive information already stored, but cannot alter system state or create new data. Severity is low because it only reads existing data.
From the tool's definition Tool name 'search_memory' and description 'Search memories using semantic similarity' indicate a retrieval operation with no modification or deletion of data. The action is passive querying of stored memories.
Attacks that exploit this kind of access
Search memories using semantic similarity. It is categorised as a Read tool in the memU MCP Server MCP Server, which means it retrieves data without modifying state.
Register the memU MCP Server MCP server in PolicyLayer and add a rule for search_memory: 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 memU MCP Server. Nothing to install.
search_memory 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_memory 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_memory. 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_memory is provided by the memU MCP Server MCP server (monsterone1/memu-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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