Animate Character — Image to Sprite Sheet Pipeline

This skill takes a source character image and an animation description, generates an animated video, then converts the video into an optimized sprite sheet ready for web use.

Two video-generation backends are supported:

• Kling direct API — JWT auth, requires KLING_ACCESS_KEY + KLING_SECRET_KEY env vars.
• Higgsfield CLI — handles auth internally (one-time higgsfield auth login). Routes through Kling 3.0 by default but exposes 15+ other models (Seedance, Veo, Wan, Hailuo, …) via a single flag.

The dispatcher (scripts/generate.mjs) auto-detects which one to use, or the user can force a choice with --provider=kling or --provider=higgsfield.

Prerequisites

At least one of the two backends must be available:

Option A — Kling direct API:

• KLING_ACCESS_KEY and KLING_SECRET_KEY env vars set.
• Get credentials from https://app.klingai.com/global/dev