Build Checkpoints for Your Agent with Neon Snapshots

If you build apps with an AI agent, you probably want a way to go back in time to prior agent turns. Reverting code changes can be tricky to manage snapshot, but the database is even harder. The schema and data often change with the code. If you roll back the code but not the database, the app breaks.

Neon launched a new snapshots API to solve this problem. When your agent changes the app, you can save a complete snapshot of your database (schema and data) at that exact moment. When a user wants to try a previous version, you can restore the database to the state that matches the code.

This is possible because of how Neon stores data. They use a “copy-on-write” method, which means a snapshot is just a lightweight reference to a past state, not a full copy of the database. Creating and restoring snapshots is fast and cheap enough to do after every change.

You can build this checkpoint feature with a few API calls. After your agent modifies the app, call the API to create a snapshot and store its ID with your code version. To restore, call the API with the ID for the version you want. Neon reverts the database to the exact schema and data from that checkpoint, so your code runs without broken queries or mismatched data.

Check out Neon’s blog post or their demo repo for full details.