This tool searches across all namespaces to find relevant memories. Use when you need to find information that might be stored in any user or project namespace.
AI agents call searchAllMemories to retrieve information from MCP Memory without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries data without side effects. It returns search results from stored memories but does not create, modify, delete, or execute operations. The blast radius of misuse is limited to potential information disclosure of stored preferences and user information, which is a read-level risk.
From the tool's definition Tool performs a search operation across namespaces to 'find relevant memories' with no modification, deletion, or execution capability. The description explicitly states 'searches across all namespaces' indicating query-only functionality.
Attacks that exploit this kind of access
This tool searches across all namespaces to find relevant memories. Use when you need to find information that might be stored in any user or project namespace. It is categorised as a Read tool in the MCP Memory MCP Server, which means it retrieves data without modifying state.
Register the MCP Memory MCP server in PolicyLayer and add a rule for searchAllMemories: 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 MCP Memory. Nothing to install.
searchAllMemories 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 searchAllMemories 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 searchAllMemories. 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.
searchAllMemories is provided by the MCP Memory MCP server (redaphid/mcp-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.
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