Search memories semantically.
AI agents call recall to retrieve information from memro MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The recall tool performs a read-only search operation over stored memories. It retrieves or queries data with no side effects—it does not create, modify, delete, or execute external operations. Semantic search is inherently a retrieval mechanism. The blast radius of misuse is minimal, as an AI agent querying memories cannot cause harm through search alone.
From the tool's definition Tool name 'recall' and description 'Search memories semantically' indicate a query operation that retrieves data without modification. This is consistent with the server's stated purpose of enabling 'storage and retrieval' and 'semantic search' of information.
Attacks that exploit this kind of access
Search memories semantically. It is categorised as a Read tool in the memro MCP Server MCP Server, which means it retrieves data without modifying state.
Register the memro MCP Server MCP server in PolicyLayer and add a rule for recall: 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 memro MCP Server. Nothing to install.
recall 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 recall 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 recall. 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.
recall is provided by the memro MCP Server MCP server (memrohq/memro-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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