Your first run
Quickstart
- 01
Paste AGENTS.md into your coding agent
Copy the official instructions and paste them into your coding agent.
Open your coding agent
View official sourceWatch: build a new agent feature
- 02
Ask it to build
Describe the product or feature you want. The coding agent will build the product interface and connect your backend to server-side agents through HarnessRouter.
Sample prompts01 / 04Build a codebase fixer agent product with an interface inspired by Cursor.
Finish copying AGENTS.md to unlock - 03
Add your API key securely
When the coding agent opens a secure secret modal, create a Workspace API key and paste it into that modal. The coding agent stores it as HR_API_KEY and continues the build.
Create API keyPaste the key only into the secure modal opened by your coding agent. Never paste it into normal chat, source files, AGENTS.md, browser code, logs, or screenshots.
- 04
Run a task, then manage your harnesses
Run one task through your product and confirm streamed progress, the final result, files or artifacts, and the trace.
Your product serverHarnessRouter CloudOpen agent harnessesView configured harnesses, tasks, progress, traces, files, artifacts, results, sandboxes, limits, and settings.

