Fetch a single memory once you know its memory_id.
AI agents call get_memory to retrieve information from Mem0 MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves data (a memory record) by ID and produces no modifications, deletions, or external operations. It is a straightforward read/query operation. Severity is low because the data returned is user-controlled memories (coding preferences) with limited blast radius if misused.
From the tool's definition Tool name is 'get_memory' and description states 'Fetch a single memory once you know its memory_id' — fetch is a read operation with no side effects.
Attacks that exploit this kind of access
Fetch a single memory once you know its memory_id. It is categorised as a Read tool in the Mem0 MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Mem0 MCP Server MCP server in PolicyLayer and add a rule for get_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 Mem0 MCP Server. Nothing to install.
get_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 get_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 get_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.
get_memory is provided by the Mem0 MCP Server MCP server (mem0ai/mem0-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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