COVER RAT · ART BUILDER · NOW LIVE

Cover Rat.
One prompt seed, every aspect ratio.

Cover Rat is a two-stage art builder for indie musicians. Stage one is a 90-second vibes intake: 10 questions that lock your aesthetic into a reusable master prompt. Stage two is the studio: per-release subject + stamp + aspect, generated live via FLUX.1 through the Hugging Face Inference API. Synthesizer is Claude Sonnet 4.6 with Gemini fallback. Built for the Sonido Vector EP Cumbias del Futuro (PRSM, late May 2026); portable to any artist or playlist brief.

Start a vibe brief → 90 seconds · synthesized live

Real outputs · same brief, every surface

5 aspects · 1 seed · 0 re-prompts

01 / COVER

1:1 · cover1400 × 1400

02 / REEL

9:16 · reel1080 × 1920

03 / OG

1:1 · og1200 × 1200

04 / WIDE BANNER

7:2 · bandcamp banner1400 × 400

05 / SQ

1:1 · square1400 × 1400

↳ Real outputs from FLUX.1 via the production tool. Used as the Sonido Vector EP Cumbias del Futuro visual system. The strawman demos the workflow architecture; the images are the actual generated artefacts.

How the real version works

Master prompt + variables

One canonical prompt template, with subject + scene + stamp + accent as variables. Locked aesthetic per project; vary the subject per release.

md template · variable substitution

Local Node proxy

Browser-origin requests to Hugging Face are blocked by CORS. A 60-line Node server runs locally, forwards generation requests server-side, returns binary.

node · http · fetch · hf inference api

FLUX.1 generation

Schnell for fast iteration (1-3s), Dev for production-grade textures (10-30s). Token in localStorage, never on the wire to anyone but HF.

flux.1-schnell · flux.1-dev

Multi-aspect export

One source generation, exported to 1:1, 9:16, 16:9, wide banner, OG. Same seed, every paid surface, in minutes. Ready for ad upload.

canvas · crop · png export