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Using the DejaOS App Development Skill

dejaos-app-dev-sdk2-0 is an AI coding Skill for DejaOS SDK 2.0 app developers. It helps supported AI coding tools create, modify, run, and review DejaOS apps through natural-language requests.

Get the Skill​

Open the DejaOS GitHub repository's skills directory and download the complete dejaos-app-dev-sdk2-0 folder. Do not copy only SKILL.md.

On Windows, common installation locations are:

Codex:     %USERPROFILE%\.codex\skills\dejaos-app-dev-sdk2-0
Cursor:    %USERPROFILE%\.cursor\skills\dejaos-app-dev-sdk2-0
WorkBuddy: %USERPROFILE%\.workbuddy\skills\dejaos-app-dev-sdk2-0

Restart the AI coding tool or begin a new conversation after copying the folder.

Use the Skill​

Name the Skill directly in your request:

Use $dejaos-app-dev-sdk2-0 to create a DejaOS SDK 2.0 access-control app
for VF202_V12. Confirm the device capabilities first, then create the project.
When the USB device is connected, run the app and check its logs.

For an existing app, provide its path, exact device model, actual SKU options, and requested change:

Use $dejaos-app-dev-sdk2-0 to modify C:\projects\access-control.
The device is VF114_V12. Add a scan-success page and an audio prompt.
Check every component API against this project's dxmodules.

What to Expect​

The AI will normally:

  1. Check whether the DejaOS CLI is installed and ask before helping install it.
  2. Confirm the exact device model and any optional hardware used by the app.
  3. Create a complete project with dejaos new, or inspect the existing project.
  4. Add the appropriate UI font when needed.
  5. Validate component names and API calls against the project's generated dxmodules/*.js.
  6. Ask whether the correct USB device is connected.
  7. After confirmation, synchronize and run the app, then inspect device logs.
  8. Repeat the run-and-log check after material code or resource changes while the device remains available.

Be precise about the model and installed options. A feature supported as an option by a model is not necessarily installed on a particular unit. When no device is available, the AI can still perform static checks, but real-device validation remains pending.

See DejaOS CLI for CLI basics, or use the DejaOS application prompts when you only need reusable context for a general AI tool.