From c7306f7aed68334a4287b4eed9c05444e4b095a6 Mon Sep 17 00:00:00 2001
From: William FH <13333726+hinthornw@users.noreply.github.com>
Date: Fri, 18 Apr 2025 13:44:50 -0700
Subject: [PATCH] Add log json env var (#4348)

---
 docs/docs/cloud/reference/env_var.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/docs/docs/cloud/reference/env_var.md b/docs/docs/cloud/reference/env_var.md
index e15157cac..3c976e70c 100644
--- a/docs/docs/cloud/reference/env_var.md
+++ b/docs/docs/cloud/reference/env_var.md
@@ -55,6 +55,14 @@ Set `LANGSMITH_TRACING` to `false` to disable tracing to LangSmith.
 
 Configure [log level](https://docs.python.org/3/library/logging.html#logging-levels). Defaults to `INFO`.
 
+## `LOG_JSON`
+
+Set `LOG_JSON` to `true` to render all log messages as JSON objects using the configured `JSONRenderer`. This produces structured logs that can be easily parsed or ingested by log management systems. Defaults to `false`.
+
+## `LOG_COLOR`
+
+This is mainly relevant in the context of using the dev server via the `langgraph dev` command. Set `LOG_COLOR` to `true` to enable ANSI-colored console output when using the default console renderer. Disabling color output by setting this variable to `false` produces monochrome logs. Defaults to `true`.
+
 ## `N_JOBS_PER_WORKER`
 
 Number of jobs per worker for the LangGraph Server task queue. Defaults to `10`.