Agent driven knowledge graph inspection that uses AI to retrieve relevant entities and relations based on a query.
AI agents call inspect_knowledge_graph 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 is clearly a Read operation: it queries and retrieves data from the knowledge graph using semantic search. The description explicitly states it 'retrieve[s] relevant entities and relations' with no mention of modification, deletion, or side effects. The verb 'inspect' and the function of querying for retrieval confirm its read-only nature.
From the tool's definition The tool 'inspect_knowledge_graph' performs 'retrieval' of entities and relations based on a query—'retrieve relevant entities and relations'.
Attacks that exploit this kind of access
Agent driven knowledge graph inspection that uses AI to retrieve relevant entities and relations based on a query. 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 inspect_knowledge_graph: 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.
inspect_knowledge_graph 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 inspect_knowledge_graph 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 inspect_knowledge_graph. 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.
inspect_knowledge_graph 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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