Memory analysis: overview, top consumers, swap, cache management.
AI agents call sys_memory to retrieve information from RedisNexus without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The sys_memory tool performs read-only introspection of system memory metrics and statistics. It retrieves and displays memory usage data, identifies top memory-consuming processes, and provides cache status information. No side effects, state changes, code execution, or data modification occur.
From the tool's definition Tool description explicitly states 'Memory analysis: overview, top consumers, swap, cache management' — these are purely observational/analytical operations with no modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
Memory analysis: overview, top consumers, swap, cache management. It is categorised as a Read tool in the RedisNexus MCP Server, which means it retrieves data without modifying state.
Register the RedisNexus MCP server in PolicyLayer and add a rule for sys_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 RedisNexus. Nothing to install.
sys_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 sys_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 sys_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.
sys_memory is provided by the RedisNexus MCP server (rajkumar-madhu/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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