How to Set Up Persistent Memory for Codex Using Obsidian (3 Approaches)

📰 Dev.to AI

Learn to set up persistent memory for Codex using Obsidian in 3 approaches, enabling long-term memory for your projects

intermediate Published 25 May 2026

Action Steps

Set up an Obsidian vault to store Codex memory
Configure Codex to read from and write to the Obsidian vault
Implement one of the three approaches: using a single note, a folder structure, or a custom plugin to manage Codex memory

Who Needs to Know This

Developers and data scientists working with Codex can benefit from this setup to maintain project continuity and reduce repetition

Key Insight

💡 Using Obsidian as a memory layer for Codex enables persistent memory between sessions, reducing project setup time and increasing productivity

Key Takeaways

Learn to set up persistent memory for Codex using Obsidian in 3 approaches, enabling long-term memory for your projects

Full Article

Codex has no long-term memory. Every session starts clean. You explain your project structure, your naming conventions, your testing preferences, the thing you decided last Tuesday about the API design. Then you close the terminal and do it all over again tomorrow. The fix is giving Codex a memory layer that persists between sessions. And the best place to store that memory is Obsidian , because it's just markdown files on disk

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