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Resources · Developer tutorials

APIs & AI image generation – explained hands-on

Concrete step-by-step guides with runnable code examples. From REST API fundamentals through secure authentication to automating ComfyUI.

Available tutorials

REST API Tutorial

From HTTP methods and status codes to your first own CRUD API with Express 5. The starting point.

Beginner Node.js ~12 min

JWT Authentication explained

The structure of JSON Web Tokens, the login flow and a secure implementation with jsonwebtoken & bcrypt.

Advanced Security ~11 min

ComfyUI API Basics

Drive the ComfyUI server via the API: export a workflow, trigger it from Python/curl and retrieve the images.

Beginner Python ~10 min

Planned

Free APIs list 2026

A curated overview of public APIs (weather, crypto, AI, test data) – with and without an API key.

planned

API Rate Limiting

Fixed window, sliding window & token bucket – cleanly implemented with express-rate-limit.

planned

ComfyUI: batch generation

Generate hundreds of images automatically – loops, error handling and progress reporting.

planned