OpenAI Codex just shipped a quality-of-life update that many users had been asking for: local projects can now include files from multiple folders at once. Previously, a Codex project was locked to a single directory, which meant the agent could only read and write within that one folder. Now you can bring in related code, docs, and reference files from sibling or parent directories into a single project view.
One project, many roots
The way it works is straightforward. The Codex app previously allowed selecting only one project folder per workspace. That was a real friction point for setups where, say, your source code lives in one folder and your documentation or shared libraries live in another. Some users had an AI workspace and a knowledge vault as sibling folders that couldn't be merged, where the vault was a long-term knowledge base shared with other tools while the workspace was a working area for current deliverables.
The new multi-folder support resolves this. With a single selected folder, Codex could not read vault context while producing output in the workspace. Now it can. You designate one folder as the
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