Is KB Cafe a coffee shop?

No. KB Cafe is a website: a free AI knowledge base and toolkit for software developers, at kbcafe.com. The name is a pun on Knowledge Base, and there is no physical location, no menu and no coffee.

Learning and building with AI. It has interactive tools that run in your browser, plain-English explainers on how modern AI works (context windows, RAG, MCP, embeddings, agents), guided learning paths, and quick developer references.

Does it cost anything, and do I need an account?

No to both. Everything is free and there is nothing to sign up for. The tools run entirely client-side, so nothing you paste is uploaded anywhere.

Is this the same kbcafe.com from the 2000s?

Same domain, rebuilt. kbcafe.com was a developer resource in the early-to-mid 2000s, known for RSS and feed tooling and a deep shelf of C++, C# and .NET how-tos. The feed tools are still here; the rest is written for how developers work now.

About KB Cafe: the interactive AI knowledge base

KB Cafe is a free AI knowledge base and toolkit for software developers. It is a website, not a café: interactive tools, plain-English explainers on how modern AI actually works, and quick references, all running in your browser.

The name is a pun rather than a menu. KB is for Knowledge Base, the substance, the tools and references; Cafe is for the delivery: warm, fast, and made to be used, not wrestled with.

The domain has roots: kbcafe.com was a go-to developer resource in the early-to-mid 2000s, explaining the infrastructure of its era, RSS, feeds, and a deep shelf of C++/C#/.NET how-tos that people linked for years because they needed a reference. We brought it back, and rebuilt it for how we work today.

What’s here

Tools: fast developer utilities that run entirely in your browser.
AI Explained: clear references for modern AI infrastructure: context windows, MCP, RAG, embeddings, and the patterns behind agents.
Knowledge Base: evergreen explainers on the fundamentals.
Feeds: modern RSS/Atom/OPML tools, honoring the site’s heritage.

How we build

Everything runs client-side: nothing is uploaded, there are no accounts, and the tools work offline once loaded. We write references to be read once and remembered, and we don’t pad them with filler. The goal is simple: be the place developers cite when they need to explain how something works.

Common questions

Is KB Cafe a coffee shop?: No. KB Cafe is a website: a free AI knowledge base and toolkit for software developers, at kbcafe.com. The name is a pun on Knowledge Base, and there is no physical location, no menu and no coffee.
What is KB Cafe for?: Learning and building with AI. It has interactive tools that run in your browser, plain-English explainers on how modern AI works (context windows, RAG, MCP, embeddings, agents), guided learning paths, and quick developer references.
Does it cost anything, and do I need an account?: No to both. Everything is free and there is nothing to sign up for. The tools run entirely client-side, so nothing you paste is uploaded anywhere.
Is this the same kbcafe.com from the 2000s?: Same domain, rebuilt. kbcafe.com was a developer resource in the early-to-mid 2000s, known for RSS and feed tooling and a deep shelf of C++, C# and .NET how-tos. The feed tools are still here; the rest is written for how developers work now.

Part of the family with yank.info. Read the blog for the thinking behind the rebuild, or the story of the RSS blog that used to live here.