<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" xmlns:media="http://search.yahoo.com/mrss/"><channel><title>Codex on Shaowen Chen's Website</title><link>https://www.chenshaowen.com/en/tags/codex/</link><description>Recent content in Codex on Shaowen Chen's Website</description><generator>Hugo -- gohugo.io</generator><language>en</language><copyright>&amp;copy;2016 - {year}, All Rights Reserved.</copyright><lastBuildDate>Wed, 01 Jul 2026 00:00:00 +0000</lastBuildDate><sy:updatePeriod>weekly</sy:updatePeriod><atom:link href="https://www.chenshaowen.com/en/tags/codex/atom.xml" rel="self" type="application/rss+xml"/><item><title>Codex Custom Model Configuration and Usage Tips</title><link>https://www.chenshaowen.com/en/blog/codex-custom-model-config-and-tips.html</link><pubDate>Wed, 01 Jul 2026 00:00:00 +0000</pubDate><atom:modified>Wed, 01 Jul 2026 00:00:00 +0000</atom:modified><guid>https://www.chenshaowen.com/en/blog/codex-custom-model-config-and-tips.html</guid><description>References: Codex Configuration Basics, Codex Advanced Configuration Codex uses the OpenAI Responses API. When connecting to a custom gateway, define the endpoint with [model_providers.&amp;lt;id&amp;gt;], and the top-level model and model_provider determine the actual call. 1. Where the Configuration File Lives The user configuration is at ~/.codex/config.toml by default (on Windows,</description><dc:creator>微信公众号</dc:creator><category>AI</category><category>Codex</category><category>Programming Assistant</category><category>R&amp;D</category></item></channel></rss>