Search memory by meaning using natural language.
AI agents call memory_search to retrieve information from Memstate AI - Agent Memory System without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool queries existing memory data semantically without creating, modifying, deleting, or executing code. It is a read-only operation that retrieves information based on natural language search criteria. The action is reversible and has no destructive potential. Severity is low because misuse would only expose information the agent already has access to, with no blast radius beyond information disclosure.
From the tool's definition Tool name is 'memory_search' and description states it performs 'Search memory by meaning using natural language.' This is a retrieval operation with no modification of data and no side effects.
Attacks that exploit this kind of access
Search memory by meaning using natural language. It is categorised as a Read tool in the Memstate AI - Agent Memory System MCP Server, which means it retrieves data without modifying state.
Register the Memstate AI - Agent Memory System MCP server in PolicyLayer and add a rule for memory_search: 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 Memstate AI - Agent Memory System. Nothing to install.
memory_search 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_search 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_search. 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_search is provided by the Memstate AI - Agent Memory System MCP server (memstate-ai/memstate-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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