Design that doesn’t look AI-made.
Signature is an agent skill for app UI. The free skill is yours to try. Pro is $9 once for the full skill zip.
One-time payment. Stripe Checkout. Download after purchase.
$ node lint/tells-lint.mjs demos/01-tidepool/before.html
- 10:5default-fontfont-family uses a generator default. Pick a font for this mood (see tokens/).
- 27:63neon-on-darkNeon accent #22d3ee on the near-black page background (5 uses directly on it). Use one warm accent sampled from real imagery.
- 27:63purple-gradientGradient with purple stop #8b5cf6. Pull color from this product's own imagery.
- 36:5glow-orbfilter: blur(80px) on a radial gradient makes a glow with no source. Take light from real imagery or the product UI.
- 47:5gradient-headline-textGradient clipped to text. Set the headline in one solid ink and let type scale carry it.
1 file(s), 0 passed, 1 failed
What’s in Pro
SKILL.md | The skill: mood, signature idea, floor, tells checklist, final gate, and when to use each Pro tool. |
|---|---|
lint/tells-lint.mjs | A linter for the tells: default fonts, generator icon sets, gradient text, glow orbs, purple gradients, neon on dark, emoji icons, generic copy, and more. Node 18+, no dependencies. |
tokens/ | One CSS token file per mood, a Tailwind preset per mood, and font self-hosting notes. |
recipes/ | Screen recipes: landing hero, pricing (no three tiers), onboarding, paywall, empty states, settings, SwiftUI. |
copy/ | The copy pass and the shared banned-phrase list. |
demos/ | Three before/after pairs, each built from one prompt. |
Free or Pro
| Free | Pro | |
|---|---|---|
| Mood, signature idea, floor, tells checklist, final gate | Yes | Yes |
| Tells linter | No | Yes |
| Token files for each mood | No | Yes |
| Screen recipes | No | Yes |
| Copy pass and banned-phrase list | No | Yes |
| Before/after demos | No | Yes |
| License | MIT | One buyer |
| Price | $0 | $9 once |
How delivery works
- Pay through Stripe Checkout. Tax is added at checkout where it applies.
- The next page has your download button.
- Your receipt email has a download link that works for 7 days.
Lost the link? Get a new download link.
Install the free skill
For Claude Code, unzip it and copy the folder:
unzip signature-free-0.1.0.zip
mkdir -p ~/.claude/skills
cp -R signature ~/.claude/skills/The README in the zip covers Codex and Cursor. To call it, start your prompt with “Use the signature skill.”
Questions
Is this a Mac app?
No. Signature is a folder of files your coding agent reads. You get a zip, with no license key and no account.
Which agents does it work with?
Claude Code, Codex, and Cursor.
Can I get a refund?
Yes. Reply to your receipt within 14 days of buying for a full refund, for any reason. A refund ends your access to the download.
How many people can use one purchase?
One purchase covers one person or one company. Install it on any machine that you or your employees use, in your own projects and client projects. Do not share the files.
Can I ship what I make with it?
Yes. Code, pages, apps, and designs you make with the skill belong to you or your client.
Do I need the free skill too?
No. Pro includes everything in the free skill. If you have both installed, remove the free one.
Anything else?
Email [email protected].