Retrieve a specific state entry by namespace and key. Use this when you already know both. Returns the full content, tags, and timestamps. Returns a clear
AI agents call memory_read to retrieve information from Munin Memory without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query operation against a persisted memory store. It retrieves existing data by namespace and key without creating, modifying, deleting, or executing operations. The blast radius of misuse is limited to information disclosure of stored context within the user's own self-hosted database.
From the tool's definition Tool name 'memory_read' and description 'Retrieve a specific state entry by namespace and key. Use this when you already know both. Returns the full content, tags, and timestamps.' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
Retrieve a specific state entry by namespace and key. Use this when you already know both. Returns the full content, tags, and timestamps. Returns a clear. It is categorised as a Read tool in the Munin Memory MCP Server, which means it retrieves data without modifying state.
Register the Munin Memory MCP server in PolicyLayer and add a rule for memory_read: 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 Munin Memory. Nothing to install.
memory_read 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 memory_read 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 memory_read. 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.
memory_read is provided by the Munin Memory MCP server (magnus-gille/munin-memory). 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.
Teams ship this data inside their own products. See what a licence covers →