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simonw/browser-compat-db

ID

1981

Status

new

Published

25 Jun 2026, 7:59 AM

Fetched

27 Jun 2026, 8:23 PM

Provider

Simon Willison

Category

developer-ai

Original URL

https://simonwillison.net/2026/Jun/24/browser-compat-db/

Source URL

https://simonwillison.net/atom/everything/

Excerpt

simonw/browser-compat-db Inspired by Mozilla's new MDN MCP service - source code here - I decided to try converting their comprehensive mdn/browser-compat-data repository full of browser compatibility data into a SQLite database. This new GitHub repo includes a Claude Code for web (Opus 4.8) generated script for doing that using 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 that builds the database and then force-pushes it to a db "orphan" branch. You can download the resulting database from here, and since it's hosted with open CORS headers you can also explore it with Datasette Lite. Tags: github, mozilla, projects, github-actions, datasette-lite, ai-assisted-programming, model-context-protocol, mdn