Learning theory but not building anything? Step into real engineering systems. Assemble, modify, and break them locally — guided, but you build it.
Pick your playground →
Practice engineering on real projects, not isolated exercises. Follow the path, inspect each decision, change the code, and build knowledge you can reuse in your own work. Try a Workbench-style step from the actor framework playground below.
Browse playgrounds →
Knowledge.Dev is built around local practice, not cloud sandboxes or passive lessons.
Start from a prepared project and move through the system in small, reviewable steps. The goal is not to copy snippets. The goal is to build the whole thing.
Use Claude Code, Codex, Cursor, or another coding agent when it helps. You still make the engineering decisions and keep the project local.
The workflow should feel like normal development, with guidance added where it matters.
The code runs on your laptop, in your folder, with your tools.
Every playground leads to a working application, not a toy fragment.
Steps, diffs, and checkpoints make the build inspectable instead of magical.
How you build
Both.
Write the code yourself when you want depth. Let an agent implement when you want speed. Workbench will make both modes part of the same playground flow.
