Retrieve data from the cache
AI agents call retrieve_data to retrieve information from Memory Cache Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries cached data without modifying, deleting, or executing any operations. It is a straightforward read operation that retrieves previously stored information.
From the tool's definition Tool name is 'retrieve_data' and description states 'Retrieve data from the cache' — purely a retrieval operation with no side effects.
Attacks that exploit this kind of access
Retrieve data from the cache. It is categorised as a Read tool in the Memory Cache Server MCP Server, which means it retrieves data without modifying state.
Register the Memory Cache Server MCP server in PolicyLayer and add a rule for retrieve_data: 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 Memory Cache Server. Nothing to install.
retrieve_data 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 retrieve_data 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 retrieve_data. 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.
retrieve_data is provided by the Memory Cache Server MCP server (tosin2013/mcp-memory-cache-server). 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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