Interactive tools, plain-English guides, and step-by-step paths that help you build AI apps, agents, and automations right in your browser.
Pick a starting point. Each one is a hands-on path, not a reading list.
Go from idea to architecture: design the system, wire the tools, compose the agent.
Why AI gives bad answers, and how to fix it. Start here if your prompts disappoint.
Context windows, tokens, embeddings, RAG. The infrastructure behind every AI feature.
Connect triggers, schedules, tools, and AI into workflows that run themselves.
The un-gated version of what a bootcamp charges $10k for: build real proof, drill the concepts interviews test, and present your work well. No job promised.
A play-with-it demo of how a model samples each next token. Turn the temperature up and watch it get wild, or down to greedy. No account.
An honest comparison of free, interactive learning here against paid bootcamps and courses, including where paying genuinely wins.
A live tally of what you actually did here, XP, streak, practice, and capstones, generated in your browser. Not a certificate we sell.
Say a goal, get a custom route through KB Cafe’s real guides, tools, and hands-on exercises. No signup.
A build-in-public tour of StockTools.AI, the newest site in our network: a free, filing-backed research platform that tracks Congress trades, insider buys, whale 13F holdings, CEO pay, and AI research, all built with AI on top of public SEC data, for investors and traders.
Our biggest update yet: interactive practice interleaved into lessons (try it live in the post), build-this capstones on every path, a streak and XP system, a learning path builder that composes real vetted pages, and two new guides. All free, no account, in your browser.
Fable 5 rewards fewer instructions, not more. Effort as the main dial, and the migration gotcha that quietly falls back to Opus.
A chatbot answers; an agent acts. The five parts, the loop, the security, and a spec builder.
The Plain-English Tech Dictionary: 83 AI, coding, and vibe-coding terms explained in one sentence, with an example and a next step.
Browse all 83 termsThree tools to try in your browser, no signup.
Answer a few questions and get a clear, well-structured prompt, built from scratch.
Try itPaste any prompt for a health score, the missing pieces, and a stronger version.
Try itPrice, users, and usage in. Monthly margin and your break-even point out.
Try it30 tools, grouped by what you need, the same way as on the tools page.
The infrastructure of modern AI, from context windows to agents.
Only the best tools, tips, and real life examples for building with AI.
Star us on GitHub and share with a friend.