Cart Assistant · Version 2.3.4

One list. Separate supplier carts.

Add exact packages on PeptideTech, then send your list to the optional Cart Assistant. It prepares supported supplier carts in your own browser and guides the selections that need your attention.

Check your installation

Extension not detected. Install or enable the Cart Assistant, then reload this page.

Download Chromium package

For an existing unpacked installation, extract the new ZIP into the same extension folder, then select Reload in your browser’s Extensions manager. Return here and reload this page to check the connection.

The download is a desktop developer build. Chrome Web Store approval is still pending. Unpacked installations do not update automatically. Firefox and Safari instructions are below.

How it works

Choose a supplier, size and form, then select “Add to cart”.
Open your PeptideTech cart and send the list to the extension.
Open the extension and allow access to the selected stores. Reopen the extension if the browser closes it, then choose “Build supplier carts”.
Review each supplier’s cart. The assistant verifies exact quantity changes where supported and flags manual selections, changed stock, verification screens and uncertain additions.

Existing supplier cart items stay in place. You check the final price, destination eligibility and shipping, and place each order yourself.

Assisted checkout

Save your name, email and shipping address once in the extension (Checkout details). When a supplier’s cart is ready, choose “Go to checkout and fill my details”: the assistant opens that supplier’s checkout and types your details into the empty contact and shipping fields, then shows the total the supplier displays.

You choose shipping, complete any age or researcher verification, enter payment and place the order yourself. The assistant never fills payment fields, never ticks terms or eligibility boxes and never submits an order. Your details stay in the extension on this device and are sent only to the supplier checkout you choose.

Affiliate disclosure

Only the affiliate links and assigned codes attached to your PeptideTech selections are used. We may receive a commission if you complete a purchase. We do not silently replace unrelated shopping links or apply an unassigned code. Coupon savings are not assumed.

Chrome, Brave, Edge, Opera and Vivaldi on desktop

These Chromium browsers share the same developer package. Store publication is pending; this download is an unpacked development build.

Download Chromium package

Extract the ZIP to a folder you will keep.
Open your browser’s Extensions manager and enable Developer mode.
Choose “Load unpacked” and select the extracted folder.
Pin the Cart Assistant, allow it on PeptideTech, then reload your cart page.

Unpacked installations do not update automatically. Replace the files and reload the extension for a new release.

Firefox on desktop

A Firefox-specific Manifest V3 build uses a background event page and the native promise-based extension APIs. Firefox 140 or newer is required. Mozilla signing and a public add-on listing are still pending.

Download Firefox development package

Developers can extract the package and use “Load Temporary Add-on” from Firefox’s extension debugging page, selecting manifest.json. A temporary installation ends when Firefox restarts. Normal permanent installation needs a Mozilla-signed release.

Safari on Mac

The Safari package includes a separate manifest for Safari’s background environment. Safari requires a containing app signed with an Apple developer identity. A public App Store build is not available yet.

Download Safari extension source

Supplier coverage and limits

All 6 listed suppliers have an explicit handoff. WooCommerce and Shopify adapters attempt an addition only after reading the current cart and confirming a unique package. A custom theme, verification screen, ambiguous form or unavailable cart API switches that item to guided review.

Supplier	Handoff
American Peptides	Automatic attempt with exact cart verification; guided fallback
Blank Peptides	Automatic attempt with exact cart verification; guided fallback
Amino Club	Guided selection and manual confirmation
Nova Peptide Supply	Automatic attempt with exact cart verification; guided fallback
Amino USA	Automatic attempt with exact cart verification; guided fallback
Cenexa Labs	Automatic attempt with exact cart verification; guided fallback

“Verified” means the exact variant quantity increased by the requested amount. “Confirmed by user” records your manual check. “Skipped” and “Uncertain” never count as a successful automated addition. Automatic operation has not been verified against every live supplier and browser combination.

Some suppliers require you to attest that you are an eligible researcher, log in or complete a CAPTCHA. The assistant waits for you. It does not bypass those checks.

Extension privacy and permissions · Release files and SHA-256 checksums · Open your cart →