openai_chatgpt_enterprise(external, opens in a new tab or window)
text code block:from logs-openai_chatgpt_enterprise.codex_log-* | where data_stream.dataset == "openai_chatgpt_enterprise.codex_log" and event.action == "app_mcp_call" and user.email is not null and organization.id is not null and gen_ai.tool.name is not null | eval Esql.time_bucket = date_trunc(30 minutes, @timestamp) | stats Esql.gen_ai_tool_name_count_distinct = count_distinct(gen_ai.tool.name), Esql.connector_id_count_distinct = count_distinct(openai_chatgpt_enterprise.codex_log.event_details.tool_meta.connector_id), Esql.event_count = count(*), Esql.gen_ai_tool_name_values = values(gen_ai.tool.name), Esql.connector_id_values = values(openai_chatgpt_enterprise.codex_log.event_details.tool_meta.connector_id), Esql.timestamp_first_seen = min(@timestamp), Esql.timestamp_last_seen = max(@timestamp) by user.email, organization.id, Esql.time_bucket | where Esql.gen_ai_tool_name_count_distinct >= 10 and Esql.connector_id_count_distinct >= 3 | keep user.email, organization.id, Esql.time_bucket, Esql.gen_ai_tool_name_count_distinct, Esql.connector_id_count_distinct, Esql.event_count, Esql.gen_ai_tool_name_values, Esql.connector_id_values, Esql.timestamp_first_seen, Esql.timestamp_last_seen
Install detection rules in Elastic Security
Detect OpenAI ChatGPT Enterprise High Codex MCP Tool Diversity in the Elastic Security detection engine by installing this rule into your Elastic Stack.
To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).