Developing sqlite-utils 4.0rc2 with Claude

Simon Willison used Claude Code to perform a final code review and bug fixes before releasing the official version of sqlite-utils 4.0.

The main achievements are as follows:

• Critical bug found and fixed: The AI agent discovered and fixed a serious design flaw in the delete_where() method where transactions were not being committed, which could cause data loss.
• Large-scale code changes: Through a total of 37 prompts and 34 commits, over 1,300 code changes were made across about 30 files.
• Improved transaction model: The design was improved so that all write operations automatically run within a transaction and commit immediately, enhancing ease of use, and the related documentation was substantially expanded.

This case is a practical example of how AI agents can assist human developers' reviews and contribute to improving code quality in complex software engineering tasks.