From 4a7a72920649306d310231e3f8dff091276f3a8f Mon Sep 17 00:00:00 2001
From: Luke Stanley <306671+lukestanley@users.noreply.github.com>
Date: Fri, 13 Jun 2025 13:22:04 +0100
Subject: [PATCH] Update README.md with MitM proxy mention

---
 README.md | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 2aaf132..77958b4 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,9 @@
 
 `codex-universal` is a reference implementation of the base Docker image available in [OpenAI Codex](http://platform.openai.com/docs/codex).
 
-This repository is intended to help developers cutomize environments in Codex, by providing a similar image that can be pulled and run locally. This is not an identical environment but should help for debugging and development.
+This repository is intended to help developers customize environments in Codex, by providing a similar image that can be pulled and run locally. This is not an identical environment but should help for debugging and development.
+
+Internet access may be enabled in Codex for task execution or task setup, which routes outbound HTTP / HTTPS traffic through a MitM proxy to intercept and filter requests. TLS connections use a custom root certificate authority for this (`$CODEX_PROXY_CERT`). Tools that perform certificate validation may need to trust this CA to function correctly.
 
 For more details on environment setup, see [OpenAI Codex](http://platform.openai.com/docs/codex).