X Bookmarks — 2024 KW48: bolt.new's Full System Prompt

November 28, 2024

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by Florian Narr

X Bookmarks — 2024 KW48: bolt.new's Full System Prompt

@tinkerersanky — bolt.new's full code generation system prompt, on GitHub

Here's how bolt.new does the prompt engineering. The entire prompt which bolt uses for code generation. Now I will put this in claude.ai, and generate a custom .cursorrules file for @cursor_ai 😀 Github Link → https://github.com/stackblitz/bolt.new/blob/main/app/lib/.server/llm/prompts.ts

That's interesting because bolt.new ships this prompt in a public repo and nobody was hiding it — StackBlitz just put it in app/lib/.server/llm/prompts.ts for anyone to read. The follow-on use case (feeding it to Claude to generate a .cursorrules file) is a clever way to port the opinionated defaults into your own editor without rebuilding them from scratch. Worth cloning and reading the actual prompt structure: it's a good example of how to constrain a model toward consistent code style.


@jh3yy — Webcam effects with HTML canvas

webcam effects with HTML canvas 🎥

note to self:: finish old demos

Neat — the interesting part here isn't the effect itself but the constraint: no WebGL, no shader, just <canvas> and a getUserMedia stream. Canvas-based webcam manipulation is one of those things that feels like it should be harder than it is. Worth bookmarking as a minimal working example before reaching for a heavier video processing library.


@0xbags — A cheat sheet that went viral

imagine not using a cheat sheet to help you win

21k likes, 21k bookmarks. Whatever the image contains, the engagement says it's genuinely useful reference material. I saved it for the same reason everyone else did: the cheat sheet in the media is apparently worth keeping around.


@rebryk — Everything you need to build is free

I can't believe that:

  • Y Combinator startup school is free
  • Paul Graham essays are free
  • Harvard coding/AI courses are free
  • Figma is free
  • ProductHunt is free
  • Python is free
  • Andrej Karpathy is free
  • ChatGPT is free

Today, anyone can build a startup, get [...]

It's a motivational post, and there are approximately ten thousand of these. But the framing is accurate: the toolchain cost to go from zero to a working product has genuinely collapsed. The list is less interesting than the implied argument — that the bottleneck isn't access to tools or knowledge anymore, it's judgment about what to build and the discipline to see it through.


@guerriero_se — Nucleo Icons in a clean UI

Keeping things simple.

Icons → @nucleoicons

The demo UI in this post is a good reminder that icon choice matters more than most people think. Nucleo has been around for a while but consistently punches above what you'd expect from a paid icon library in terms of consistency and weight balance across sizes.


5 of 10 bookmarks from this week had enough substance for this format. Skipped: a mobile-first humor post, a thin ADHD app announcement, a weekly highlights post without context, and two that were just media with no original take in the text.