💡 Writing good AI prompts

Tips for clean vector results.

Prompt structure

A good jersey prompt has three parts: subject + visual treatment + colors. Keep it between 5 and 200 characters (enforced by the API) — one clear subject beats a paragraph.

[subject]            a phoenix rising, wings spread
[visual treatment]   symmetric, tribal shapes
[colors]             red and gold on dark background

The rendering style itself (flat, outline, doodle, cartoon, abstract, icon) is not written in the prompt: it is picked with the style selector and sent separately — see The 6 vector styles. Use the prompt to describe what, use the style to define how.

Good vs. bad — sport examples

❌ Weak	✅ Strong
`lion`	`geometric golden lion head, front view, symmetric`
`something cool for our football team`	`fierce wolf emblem for a football club, navy and silver`
`a photo of an eagle flying over mountains at sunset with clouds`	`minimalist eagle silhouette over three mountain peaks`
`Nike-style swoosh with Mbappé`	`dynamic speed lines forming a wing shape, electric blue`
`basketball`	`basketball in flames, bold shapes, orange and black`

Patterns that work well on jerseys: club emblems and crests, animal mascots, geometric/tribal motifs, mandalas, stylized equipment (helmet, ball, racket), mountain/sun/wave landscapes, interlaced vintage lettering shapes.

Vector and sublimation constraints

Think in shapes, not photos. Output is always SVG. Words like geometric, minimalist, silhouette, symmetric, emblem produce clean paths; photorealistic, 3D render, detailed texture fight the vector engine.
Prefer a limited palette. Name 2–3 colors in the prompt. Flat solid colors reproduce most faithfully in sublimation printing and stay easy to recolor in the studio. (API users can additionally pass a colors array of up to 5 RGB values to constrain the palette.)
Don't ask for text or lettering. AI-generated letters are unreliable; add names, numbers and slogans with the configurator's text tool on top of the design.
Don't describe the garment. Ask for the artwork itself, not "a jersey with…" — the design is placed on the 3D product afterwards. Avoid "mockup", "t-shirt", "person wearing".
One subject per generation. Complex multi-element scenes come out muddled; generate elements separately and compose them on the canvas.

Prompt language

Prompts are sent to the generation engine as-is. English gives the most predictable results, but short, concrete prompts in French (or other languages) also work well — the built-in example prompts in the panel are in French. Whatever the language, stay concrete: nouns, shapes and colors translate better than abstract adjectives.

Content rules and rate limits

Prompts are checked before generation. The following are blocked and consume no credit:

Trademarked brands (e.g. sportswear brands, entertainment franchises) and logos;
Public figures and celebrities;
Sexual, violent, drug-related or hateful content.

Anti-abuse limits also apply: an 8-second cooldown between generations, and after 2 generations in a session a Cloudflare Turnstile anti-bot check appears before the next one. Per-session, per-IP and per-store hourly/daily caps protect your quota; blocked attempts are listed on your AI Generation dashboard page.

Iterating without wasting credits

Each generation (including "Regenerate") costs 1 credit — see AI Credits. To iterate efficiently: change one thing at a time (subject wording, then style, then colors), preview before inserting, and reuse past results from the generation history instead of regenerating the same prompt.