Articles

Articles, guides and writing on BJJ training, grappling clubs, open mats and the grapplers.club platform.

3 articles

May 13, 2026

What we don't track

An accounting of what the platform deliberately doesn't collect — no analytics, no fingerprints, no device tracking — and the four named dependencies that DO see you.

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May 12, 2026

We have zero npm packages. We probably still have bugs.

On npm supply-chain risk, the discipline of saying no to packages, and a public reminder that this platform — like every platform — might have a critical bug you haven't found yet.

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May 11, 2026

It was supposed to be a WhatsApp group

How a three-grappler RSVP problem turned into a 26,695-line multi-tenant platform on Cloudflare Workers in 37 days.

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