If you're building on Cloudflare Workers or similar edge runtimes and need OAuth, this handles GitHub and Microsoft authentication where standard libraries often fail. The documentation calls out GitHub's strict header requirements (missing User-Agent gets you a 403), which is the kind of edge case detail you want someone else to have debugged. It's focused on the constraints of edge environments rather than trying to be a general OAuth solution. With 361 installs and solid audit results, it seems like a working answer to a specific pain point rather than yet another auth wrapper.
npx skills add https://github.com/jezweb/claude-skills --skill oauth-integrations