SKILL/TREE

Stop buying sunglasses that look weird and you do not know why.

Face shape × frame proportion is the single biggest predictor of "I love these." Upload a selfie or type a description, get 12 specific frame picks across budget / mid / premium, plus the lens tint matched to your skin + eye coloring. One pair under \$10, no subscription.

$9.99
Works in Claude (Pro/Max/Team) or ChatGPT (Plus/Team) · paid AI plan required
Both Claude + ChatGPT packages included — you can't pick the wrong one.
Updated
Included
0112 specific frame recommendations — brand + model name, not "try aviators" — across $60-150 / $150-400 / $400+ tiers
02Lens-tint matched to BOTH your skin undertone AND your eye color, with polarized / mirrored / gradient guidance for your lifestyle
03The 2-3 frame styles to skip for your face shape, with the optical reason why
04In-store + online try-on choreography — the 6-point fit check, store-light caveat, virtual try-on caveats
05Printable face-measurement sheet to bring to checkout — what worked, what failed, your PD
06Works from a photo or a verbal description (same depth of output either way)

What it does

Most people buy 3-5 pairs of sunglasses that don't quite work before they figure out why. The reason is rarely the brand or the price — it's frame shape × face shape mismatch + lens tint that fights your coloring. This skill diagnoses your face shape (Oval / Round / Square / Heart / Diamond / Oblong / Triangle) from either a selfie or a detailed verbal description, then matches it to the frame styles that actually flatter your proportions. You get 12 specific frame picks (brand + model name) across three price tiers — Budget ($60-150), Mid ($150-400), Premium ($400+) — plus the 2-3 styles to skip and the optical reason why. Lens tint is matched to both your skin undertone AND your eye color (not just one), with explicit guidance on when polarized / mirrored / gradient is right or wrong for your daily use (driving, screens, beach, trails, office). You also get a printable try-on checklist, the 6-point fit check for in-store visits, virtual try-on caveats, and a face-measurement sheet to bring to checkout. One pair under $10, no subscription, install on Claude Code or ChatGPT in a single command.

Frequently asked

How do I find my face shape without measuring?
The skill walks a verbal decision tree based on your forehead-vs-cheek-vs-jaw width ratios + jawline shape. Upload a selfie (hair pulled back, neutral expression) or describe those features in words — both work.
What if I don't want to upload a selfie?
Describe yourself: forehead-vs-jaw width, eye color, skin undertone (cool / warm / neutral), what frames have worked before, what failed. The verbal mode produces the same 12-pick output, just with "lower confidence — working from description" flagged.
Why does this skill give specific brand names instead of generic advice?
Because "try a round frame" doesn't help when you walk into a shop. The skill names Persol PO3092S, Warby Parker Felix, Tom Ford Marko, etc. — specific models you can search, try, or order. Plus 3 budget / 3 mid / 3 premium per face shape so you can match any wallet.
Does it handle prescription lenses?
It handles frames + lens tint recommendations. For prescription lens fit (PD, sphere / cylinder, progressive layout) it refers you to your optometrist — that's a measurement step, not a styling step.
What about cycling / running / sport sunglasses?
The skill is tuned for daily / fashion sunglasses. For sport-specific (Oakley Prizm, Smith ChromaPop, Tifosi) it gives a basic recommendation and refers to specialty retailers — sport optical has different needs than daily wear.

Install — no Terminal required

After checkout you land on a page with a one-click download and a pre-built install prompt. Pick the AI you already pay for — both packages are included, so you can't pick wrong.

What you'll see the second your payment clears
Your license key
ST-XXXX-XXXX-XXXX · permanent
Pre-built install prompt⧉ Copy
ChatGPT package (ZIP)⬇ Download

No setup work before you buy — copy, paste, done.

Have Claude Pro, Max, or Team?
Copy the prompt, paste into Claude

Copy the pre-built install prompt from the success page, paste it into any Claude Code chat, and Claude installs the skill itself — about 10 seconds. Using the app instead? Drop the downloaded folder into a Claude Project's knowledge and ask Claude to use it.

Have ChatGPT Plus or Team?
Build a Custom GPT — ~2 minutes
  1. Click Download ChatGPT package (included with every purchase).
  2. Unzip it — inside is a SETUP.md and a knowledge/ folder.
  3. Go to chatgpt.com → your profile → My GPTs Create a GPTConfigure.
  4. Paste the Name, Description, and Instructions from SETUP.md into the matching fields.
  5. Under Knowledge, upload every file in the knowledge/ folder.
  6. Click Create/Save, open your GPT, and describe your task in plain English.

A paid plan on either platform is required — Claude (Pro, Max, or Team) or ChatGPT (Plus or Team). Comfortable with Terminal? A one-line npx skilltree-network install path is available too.