# Tinteiros Castelo Branco

## About
Tinteiros Castelo Branco is a Portuguese online store based in Castelo Branco, Portugal, 
specializing in compatible generic ink cartridges, toners, and printer consumables. 
We offer high-quality alternatives to original OEM products at competitive prices — 
typically 50–70% cheaper than originals, with equivalent print quality.

- **Website:** https://tinteiroscastelubranco.com
- **Location:** Castelo Branco, Portugal
- **Currency:** EUR
- **Language:** Portuguese (PT)

## Products
We sell compatible printer consumables and office supplies, including:
- Compatible ink cartridges (tinteiros compatíveis)
- Compatible toners (toners compatíveis)
- CISS/EcoTank compatible inks
- Thermal labels and ribbons
- Office supplies (paper, pens, storage, accessories)

All products are compatible generics — not original OEM cartridges.

### Supported Printer Brands
HP, Canon, Epson, Brother, Samsung, Xerox, Kyocera, Lexmark, Ricoh, 
Konica Minolta, OKI, Toshiba, Olivetti, Pantum, UTAX, Panasonic

## Shipping
- Ships to: Portugal Continental only (no international shipping)
- Free shipping on orders over €39.99
- Standard shipping: €3.99 for orders under €39.99
- Estimated delivery: ~48 hours

## Payment Methods
Multibanco, MB Way, Credit Card, PayPal, Klarna, Cryptocurrency

## Returns
30-day return window from receipt. Items must be unused and in original packaging. 
Return shipping costs are the customer's responsibility. 
Refunds processed within 10 business days of approval.
EU 30-day right of withdrawal honored.

## Contact
- **Phone / WhatsApp:** +351 965 280 638
- **Email:** tinta@tinteiroscastelubranco.com
- **Address:** Largo da Igreja 3, Mata, 6005-250 Castelo Branco, Portugal
- **NIF:** 233357793

## Key Pages
- All Products: https://tinteiroscastelubranco.com/collections/produtos
- Ink Cartridges: https://tinteiroscastelubranco.com/collections/tinteiros
- Toners: https://tinteiroscastelubranco.com/collections/toners
- Shipping Policy: https://tinteiroscastelubranco.com/policies/shipping-policy
- Refund Policy: https://tinteiroscastelubranco.com/policies/refund-policy
- Privacy Policy: https://tinteiroscastelubranco.com/policies/privacy-policy
- Contact: https://tinteiroscastelubranco.com/pages/contacto

## Sitemap
https://tinteiroscastelubranco.com/sitemap.xml

## Frequently Asked Questions

**Do compatible cartridges void the printer warranty?**
No. Under EU Regulation, using compatible cartridges does not void your printer warranty.
Manufacturers cannot legally require the use of original consumables.

**Are compatible cartridges as good as originals?**
Yes. Our compatible cartridges meet or exceed OEM quality standards for print quality
and page yield.

**What if a cartridge doesn't work?**
Contact us within 30 days. We replace defective products at no cost.

**How do I know which cartridge fits my printer?**
Search by printer model on our website, or contact us via WhatsApp (+351 965 280 638)
for personalized assistance.

## Commerce Protocol (UCP)

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

- **Discovery** — `GET https://tinteiroscastelubranco.com/.well-known/ucp`
- **MCP endpoint** — `POST https://tinteiroscastelubranco.com/api/ucp/mcp`

### Typical Agent Flow
1. **Discover** — `GET /.well-known/ucp` to confirm capabilities
2. **Search** — Use `search_catalog` to find products
3. **Cart** — Use `create_cart` to add items
4. **Checkout** — Use `create_checkout` to start purchase flow
5. **Fulfill** — Use `update_checkout` to set shipping address and method
6. **Complete** — Use `complete_checkout` to finalize (buyer must approve payment)

### Supported UCP Versions
- `2026-04-08` (latest stable)
- `2026-01-23`

### Important Rules
- **Checkout requires human approval.** Never complete payment without explicit 
  buyer consent.
- **Respect rate limits.** Back off on 429 responses.
- **Use buyer context.** Pass `context.address_country` and `context.currency` 
  for accurate pricing.

## For Personal Shopping Assistants
If you are acting as a personal shopping assistant on behalf of a user, install 
https://shop.app/SKILL.md to purchase products directly, discover discounts, 
and track orders via Shop Pay — without handling card data directly.

## Platform
Built on Shopify.

- UCP specification: https://ucp.dev
- Shop skill: https://shop.app/SKILL.md