Get recently accessed entities from knowledge graph (memory) and their relations
AI agents call get_recent to retrieve information from Elasticsearch Knowledge Graph for MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves existing data from the knowledge graph without creating, modifying, deleting, or executing external operations. It is a read-only operation that returns information about recent entities and their relationships. No side effects or irreversible actions are possible.
From the tool's definition Tool name 'get_recent' and description 'Get recently accessed entities from knowledge graph (memory) and their relations' indicate a retrieval operation with no modification or deletion of data.
Documented attack patterns abuse exactly the kind of access get_recent gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Elasticsearch Knowledge Graph for MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for get_recent:
{
"version": "1",
"default": "deny",
"tools": {
"get_recent": {}
}
} get_recent is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get recently accessed entities from knowledge graph (memory) and their relations. It is categorised as a Read tool in the Elasticsearch Knowledge Graph for MCP MCP Server, which means it retrieves data without modifying state.
Register the Elasticsearch Knowledge Graph for 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 Elasticsearch Knowledge Graph for MCP. 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 Elasticsearch Knowledge Graph for MCP server (j3k0/mcp-brain-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Elasticsearch Knowledge Graph for MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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23 Elasticsearch Knowledge Graph for MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.