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WarnRight: Prop 65 warnings for Shopify stores

A Shopify app that drafts California Prop 65 warning text for product pages. Rules first, then a second check if the word list is unsure. The merchant confirms. A theme block prints the text. Free for 25 products. $19/mo billed by Shopify after a 7-day trial. Every number on this page is a demo.

Price
$19/mo
Built for
Shopify merchants who sell physical goods into California and need product-page Prop 65 warning text they can confirm
Cadence
classify products as they change; pull the public 60-day-notice list once a night; billed monthly by Shopify
Public sample
Sample ready

Shopify App Store: STORE-PENDING$19 a month, billed by Shopify, after a 7-day trial. Free for 25 products. The listing is not live. Email operations@ if you want the install path when it is.

What this is

WarnRight is a Shopify app. It reads a product title, materials, and category. A word list flags common listed chemicals. If the list is unsure, it calls the Fit API task prop65_classify. A person in the shop still confirms or overrides the draft. A theme app extension prints warnright.warning_text on the product page.

This page does not certify a store and does not give legal advice. A confirmed warning is a stored string. It is not a legal finding.

Demo classification table8 demo rows

These 8 rows are a demo, labeled demo in the sample file. They are not a scan of a live merchant catalog. The first 8 are printed here; the sample file carries the same 8.

8 demo classification rows demo copy of 7 Sep 2026
TitleCategoryRiskChemicals
Brass cuff braceletJewelrylistedLead
Vinyl shower curtainHomelistedDEHP
Ceramic mug with colored glazeKitchenlistedLead
Dark roast coffee beansGrocerylistedAcrylamide
MDF bookshelfFurniturelistedFormaldehyde; Wood dust
Cotton t-shirtApparelunlikely
Paper notebookStationeryunlikely
Stainless steel water bottleKitchenunlikely

What you get

  • Free for 25 productsClassify, confirm, and print a warning block. The 26th product needs the paid plan.
  • $19/mo billed by Shopify7-day trial. Shopify Billing, not a card form on this page.
  • Nightly 60-day notice pullPublic California notice list. A category match is an alert, not a finding that a shop broke a law.
  • Theme blockReads the product metafield warnright.warning_text. Empty metafield prints nothing.

What this never does

  • Never certifies a storeNo certificate, no “you passed,” no legal sign-off.
  • Never gives legal adviceA person still reads the draft. A lawyer still answers the law.
  • Never bills through Stripe on this pageShopify App Store: STORE-PENDING. Shopify Billing is the paid path.

See the demo file before you install

You do not have to take our word for the table. Here are 8 demo rows, carrying all 5 of its columns.

What arrives after you install: the app on a Shopify shop you own. Free for 25 products. Paid is $19/mo through Shopify after a 7-day trial.

Shopify App Store: STORE-PENDING

Start the thread

$19/mo · billed by Shopify, 7-day trial, free for 25 products. Listing not live.

Rather ask first? Email operations@ustechautomations.com. Ask for the App Store path when STORE-PENDING is replaced.