Get recently accessed entities from knowledge graph (memory) and their relations
AI agents call get_recent to retrieve information from Elastic Brain ZH without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves historical access data from the knowledge graph without creating, modifying, or deleting any information. It is a read-only query operation that returns existing data about recently accessed entities and their relationships.
From the tool's definition Tool name 'get_recent' and description 'Get recently accessed entities from knowledge graph (memory) and their relations' indicate retrieval/query operations with no modification or side effects.
Attacks that exploit this kind of access
Get recently accessed entities from knowledge graph (memory) and their relations. It is categorised as a Read tool in the Elastic Brain ZH MCP Server, which means it retrieves data without modifying state.
Register the Elastic Brain ZH MCP server in PolicyLayer and add a rule for get_recent: 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 Elastic Brain ZH. Nothing to install.
get_recent 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 get_recent 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 get_recent. 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.
get_recent is provided by the Elastic Brain ZH MCP server (tocharianou/elastic-brain-zh). 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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