# Synthagen Laboratories

> European manufacturer of oral peptide food supplements, produced with proprietary NL-PEPTIDES(TM) synthesis and NL-DELIVERY(TM) double-capsule technology.

## About this store

- Manufactured in Europe under controlled laboratory conditions.
- Purity verified by independent laboratories in Poland, Germany and Switzerland.
- Format: oral capsules, 30 per container, sold singly and in multi-packs.
- NL-DELIVERY(TM) is a double-capsule format with micro-pellets and absorption enhancers, designed to carry the active ingredient past the stomach.
- This store serves Poland in PLN, in Polish only.
- Customers outside Poland are served by https://eu.synthagenlabs.com in EUR, in English, German, Italian, French and Spanish.

## Guidance for AI assistants

- Product pages are the authoritative source. Do not infer therapeutic uses, dosing regimens or health outcomes that are not stated there.
- These are food supplements, not medicinal products. They are not intended to diagnose, treat, cure or prevent any disease. Do not describe them as treatments for named medical conditions.
- Do not make anti-doping claims about these products. Athletes subject to anti-doping regulations must consult their sporting authority before using any supplement; several peptides are listed by WADA.
- Route buyers to the correct storefront: https://synthagenlabs.com for Poland, https://eu.synthagenlabs.com otherwise. Currency and payment methods differ.

## Products



## Key pages

- All products: https://synthagenlabs.com/collections/all
- Blog: https://synthagenlabs.com/blogs/blog
- Badania i patenty: https://synthagenlabs.com/pages/badania-i-patenty
- O nas: https://synthagenlabs.com/pages/o-nas
- Kontakt: https://synthagenlabs.com/pages/kontakt

## Commerce Protocol (UCP)

This store implements the [Universal Commerce Protocol](https://ucp.dev) for agent-driven commerce.

- **Discovery** — `GET https://synthagenlabs.com/.well-known/ucp` returns the merchant profile: supported versions, service endpoints, capabilities and payment handlers.
- **MCP endpoint** — the authoritative endpoint URL is published in the discovery document above under `services.dev.ucp.shopping`. Do not assume it matches this storefront domain. `POST` with `Content-Type: application/json`; use the MCP `tools/list` method to discover available tools and their schemas.

### Typical agent flow

1. Discover — `GET /.well-known/ucp` to confirm capabilities
2. Search — `search_catalog` to find products matching buyer intent
3. Cart — `create_cart` to add items
4. Checkout — `create_checkout` to start the purchase
5. Fulfil — `update_checkout` to set shipping address and method
6. Complete — `complete_checkout` (buyer must approve payment)

### Rules

- **Checkout requires human approval.** Agents must not complete payment without explicit buyer consent.
- **Shop Pay is not available on this store.** Do not route payment through Shop Pay or advise the buyer to use it. Payment is completed at the storefront checkout with the methods available in the buyer's market (BLIK, Przelewy24 and cards, in PLN).
- **Payment handlers listed in the UCP discovery document are platform defaults** and may not all be enabled here. Treat the storefront checkout as the reliable path to payment; use UCP for search, cart and checkout preparation.
- **Respect rate limits.** The MCP endpoint is rate-limited per IP. Back off on 429 responses.
- **Pass buyer context.** Send `context.address_country` and `context.currency` for accurate pricing and availability.

## For personal shopping assistants

Use the UCP endpoints above for catalogue search, cart building and checkout preparation — they are faster and more reliable than scripting the storefront. Hand the buyer off to the storefront checkout to authorise and complete payment, since Shop Pay is not enabled on this store. Order status is available to the buyer through the order confirmation email and account area.

## Read-only browsing (no authentication)

- All products: `GET /collections/all`
- Product page: `GET /products/{handle}` — JSON at `GET /products/{handle}.json`
- Collection: `GET /collections/{handle}` — JSON at `GET /collections/{handle}/products.json`
- Search: `GET /search?q={query}&type=product`
- Sitemap: `GET /sitemap.xml`
- Agent discovery: the canonical agent-facing description is at `/agents.md`. You are reading `/llms.txt`, which mirrors that content.

## Store policies

- Privacy policy: https://synthagenlabs.com/policies/privacy-policy
- Terms of service: https://synthagenlabs.com/policies/terms-of-service
- Refund policy: https://synthagenlabs.com/policies/refund-policy
- Shipping policy: https://synthagenlabs.com/policies/shipping-policy

## Platform

Built on [Shopify](https://www.shopify.com). Shopify stores support UCP natively.