cover_rat.v0 · coverat.nicoborja.com
model loaded LIVE
DEMO · v0 / BETA. The "Generate live" panel below produces one-off previews from a locked demo prompt. Generations on this page are not saved and can't be reproduced exactly. For a real session with editable prompts, shortlist, launch pack, and history, start a brief →
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. The library below is calibrated on 93 reference pieces hand-curated from my own Midjourney portfolio, spanning analog collage, editorial photography, anime, cyberpunk scenes, and Latin-American mythological iconography.

Start a vibe brief → Spotify URL → Cover ↗ 90 seconds · synthesized live

Real outputs · same brief, every surface

5 aspects · 1 seed · 0 re-prompts
01 / COVER
Curated MJ ref - futurist hero scene
1:1 · cover · live1400 × 1400
02 / REEL
Curated MJ ref - figure character
9:16 · reel1080 × 1920
03 / OG
Curated MJ ref - analog collage
1:1 · og1200 × 1200
04 / WIDE BANNER
Curated MJ ref - cinematic cityscape
7:2 · bandcamp banner1400 × 400
05 / SQ
Curated MJ ref - neo-cyberpunk
1:1 · square1400 × 1400
↳ Selections from Nicolás Borja's own Midjourney portfolio (93 pieces, hand-curated). These are the reference base the synthesizer is calibrated against. Press Generate live to render a fresh cover from the baked-in demo brief.

How the real version works

01

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
02

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
03

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
04

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