Optimize your marketplace listings. A few minutes per listing.
Rewrite titles, tags and descriptions for your marketplace, in EN + FR. Compliant with the 2026 ranking — NLP, n-grams, lengths, brand policy.
macOS 12+ · Windows 10+ · Ubuntu 22+
listings / nck-personalized-goldBefore / after diff
Before — algo-penalized
Title
Custom Personalized Name Necklace Gift for Her Mom Wife Girlfriend Birthday Anniversary Christmas Handmade Jewelry
114 / 140 · ranking limit 70
Tags (13)
giftnecklacejewelryfor hermomwifecustompersonalizedhandmadenamelovebirthdaychristmas
•140 characters•Tags < 3 words•Vague terms•No key phrase
The problem
Marketplace algorithms evolve. Fyncha keeps up. Your listings stay compliant.
Auto updates
Fyncha ships each marketplace's ranking rules and recommendations as they evolve — NLP, lengths, n-grams, brand policy.
Keyphrases, not words
Marketplaces now index n-grams (2 to 4-word phrases), not isolated words. Your old generic tags no longer match what buyers search for.
Minutes vs seconds
By hand, optimizing a listing properly takes 15 to 30 minutes: title length, targeted keyphrases, brand policy, EN + FR. With Fyncha, a few seconds per listing.
How it works
Four steps. A few minutes per listing.
01
Import
Open the listing in Etsy Shop Manager. From the Fyncha Chrome extension, click "Pull this listing into Fyncha" — the listing shows up in the to-optimize list in the app.
02
Generate
Claude reads the main photo, the existing text and the shop context you provided, then generates title, 13 tags and description in EN + FR, compliant with the latest Etsy rules.
03
Review
Before/after diff per listing. Live validation: length, third-party brands, tags too short.
04
Apply
Back on the Etsy listing, the extension shows the proposals field by field. An "Apply" button pushes each field into the listing — you confirm what you want, listing after listing. No copy-paste, no Etsy API.
Granular selection
You choose what the LLM rewrites.
Check Title, Description or Tags — the rest is kept verbatim. Optimize your spend by tuning the model to your use case.
Generate proposals — 47 listingsbatch_2026_05_07
Fields to optimize
Sonnet 4.6 estimate: ~$0.27 / listing · ~$5 for 20 listings
Live previewidle
→ pull listing #1669376948
→ vision: read main photo
→ context: shop profile
→ rewrite title (62c)
→ generate 13 n-gram tags
✓ validated · score 94
Title
Personalized Name Necklace · Minimalist Gold Pendant Gift
Tags
personalized necklacename pendantgold name jewelryminimalist necklacedainty gold chain+8
BYOK & security
Your Claude API key. Zero markup.
Fyncha calls Claude directly with your own Anthropic key. You pay Anthropic at the official rate — Fyncha takes no margin, proxies nothing, never sees your traffic.
BYOK — your Anthropic key
Paste your sk-ant-... key into Fyncha. Stored locally inside the app, never sent to a third-party server.
100% local, no backend
SQLite on your machine. No Fyncha servers — there aren't any. Your listings only flow between you and Anthropic.
No access to your marketplace account
No token, no marketplace password to hand over. The Chrome extension captures the listing locally while you're already signed in to the marketplace — your shop credentials stay with you.
You stay in control
Every listing is triggered from your browser after you've validated the diff. The extension runs front-side only: no silent batch, no automated server-side action.
Pricing
One-time purchase. No subscription.
A single license for all your machines. After the included year of coverage, an optional yearly subscription of €39 keeps access to new versions — cancel anytime.
€49one-time
then €39 / year for updates (cancel anytime)
Stripe payment. 14-day refund, no questions asked.
- All features, unlimited listings
- 1 year of updates included
- macOS · Windows · Linux
- Chrome extension included — pulls the listing, then applies changes field by field, no copy-paste
- Multi-marketplace: Etsy today, more platforms added with future updates
- Email support