simonw/browser-compat-db

Simon Willison created a GitHub repository that uses AI-generated scripts and GitHub Actions to build a 66MB SQLite database from Mozilla's browser compatibility data, hosted with open CORS headers for direct access via Datasette Lite.

This new GitHub Repo includes a Claude Code for web Opus 4.8 generated script https://github.com/simonw/browser-compat-db/blob/main/build db.py for doing that using sqlite-utils https://github.com/simonw/sqlite-utils . I wanted the resulting ~66MB SQLite database to be available via the GitHub CDN with open CORS headers. GitHub releases don't have those, but any file stored in a regular GitHub repository does - so I had Codex Desktop GPT-5.5 build a GitHub Actions workflow https://github.com/simonw/browser-compat-db/blob/main/.github/workflows/build-db.yml that builds the database and then force-pushes it to a db "orphan" branch. You can download the resulting database from here https://github.com/simonw/browser-compat-db/blob/db/browser-compat.db , and since it's hosted with open CORS headers you can also explore it with Datasette Lite https://lite.datasette.io/?url=https://github.com/simonw/browser-compat-db/blob/db/browser-compat.db /browser-compat/releases tree . Tags: github https://simonwillison.net/tags/github , mozilla https://simonwillison.net/tags/mozilla , projects https://simonwillison.net/tags/projects , github-actions https://simonwillison.net/tags/github-actions , datasette-lite https://simonwillison.net/tags/datasette-lite , ai-assisted-programming https://simonwillison.net/tags/ai-assisted-programming , model-context-protocol https://simonwillison.net/tags/model-context-protocol , mdn https://simonwillison.net/tags/mdn