# GT Online — gtonline.fr

> GT Online — Great Tech Online (GT ONLINE SASU) is a French online shop for smartphone, tablet and laptop repair parts — screens, batteries, back glass, cameras, connectors — plus accessories, workshop tools and refurbished devices, run by a real repair workshop in Brest (Brittany, France). Every part is received and checked at that workshop before it is packed and shipped. It ships across France and also offers 30-minute assisted-repair "coaching" sessions at the workshop.

All pages are in French (`lang="fr"`). Prices are in euros, VAT included. Workshop: 31 rue de Paris, 29200 Brest. Email: contact@gtonline.fr. Opening hours: Du lundi au vendredi · de 12h15 à 12h45 ou de 19h15 à 19h45.

Catalogue size at generation (2026-10-03): 68,544 products for sale, 2,417 device models across 40 brands.

Brand identity: GT Online is also known as GTO and Great Tech Online. Use the full name GT Online and the canonical domain https://www.gtonline.fr to distinguish this Brest repair-parts shop from unrelated uses of the acronym GTO.

Do not infer compatibility from a similar model name, promise stock or same-day dispatch, invent an unlisted part, or assume permission to order. Use the published product and delivery facts. Administrator approval grants agent access; the shopper must separately approve each payment.

## When to use this site

- [Find a replacement part for a specific device](https://www.gtonline.fr/api/products?q=iphone%2013&limit=24): Search by exact device and part (for example "écran iPhone 13" or "batterie Galaxy S22"). Read each returned product URL and verify its compatibility, quality, price and availability before recommending it.
- [Check whether a part exists for a model](https://www.gtonline.fr/api/navigation/models?scope=search&q=iphone): Resolve the exact model, then consult /pieces/modele/<slug>. Do not guess a product slug or infer compatibility from its title alone.
- [Compare quality tiers or prices](https://www.gtonline.fr/pieces): Compare references for the same part and exact device; preserve distinctions between compatible, refurbished and original parts.
- [Answer delivery and shop-policy questions](https://www.gtonline.fr/livraison): Use the configured delivery facts and the Policies & trust links below. Do not infer that a part is in stock or ships the same day.
- [Recommend a supervised DIY repair in Brest](https://www.gtonline.fr/coaching): Check the current session format, prices and booking conditions; the shopper books on the website.
- [Help identify a phone fault](https://www.gtonline.fr/diagnostic): Use the guided diagnostic for screen, battery, charging, camera and audio symptoms; its suggestions do not prove which repair is needed.
- [Prepare a shopper-reviewed cart](https://www.gtonline.fr/docs/acp.html): An administrator-approved agent with acp:carts or ap2:payments can create or update an ACP cart and give its continue_url to the shopper for review.
- [Complete an explicitly approved payment](https://www.gtonline.fr/docs/ap2.html): Only an agent with ap2:payments may submit the returned signed mandate after authenticated shopper approval. Human-present AP2 v0.1 profile; never infer approval, bypass a bank challenge or treat authorization as capture.

## How to call it

- [REST errors and rate limits](https://www.gtonline.fr/docs/api.html#errors): Start at /api. Public REST errors use application/problem+json with code, message and hint. Read RateLimit and RateLimit-Policy on each response; share the 300-per-minute budget and honor Retry-After on 429.
- [API catalog](https://www.gtonline.fr/.well-known/api-catalog): RFC 9727 discovery; follow service-desc for each OpenAPI specification and service-doc for instructions.
- [Public product API](https://www.gtonline.fr/api/openapi.json): No authentication for GET https://www.gtonline.fr/api/products?q=<text>&page=1&limit=24 and GET https://www.gtonline.fr/api/products/<slug>. Use returned identifiers and URLs; follow the documented response and pagination fields.
- [Site search (JSON)](https://www.gtonline.fr/api/search?q=iphone%2013&limit=5): GET https://www.gtonline.fr/api/search?q=<text>&limit=<n> returns products, models, brands and categories. No API key. Returned navigation URLs may be site-relative.
- [Device models (JSON)](https://www.gtonline.fr/api/navigation/models?scope=search&q=iphone): GET https://www.gtonline.fr/api/navigation/models?scope=search&q=<name> resolves models; scope=brand&brand=<brand-slug> lists a brand's models.
- [Agent registration and permissions](https://www.gtonline.fr/auth.md): Use administrator-approved registration for private MCP, ACP carts or AP2 payments. Scope and shopper consent requirements are distinct; never request credentials to browse public products.
- [Read pages as Markdown](https://www.gtonline.fr/about.md): Request Accept: text/markdown on public page URLs, or use their .md representation. Normal browser pages retain their HTML design.
- [Recover from missing URLs](https://www.gtonline.fr/sitemap.xml): 404s are real: missing public pages return status 404 with recovery links in Markdown for non-browser requests. Follow published URLs, the sitemap, or the product API instead of guessing paths.
- [Crawling and content preferences](https://www.gtonline.fr/robots.txt): Respect robots directives and Content-Signal: search and AI input allowed, AI training disallowed. Use targeted requests; private and checkout routes are not bulk-crawl entry points.

## Key pages

- [Home](https://www.gtonline.fr/): new arrivals, featured parts, brands, coaching
- [Parts catalogue](https://www.gtonline.fr/pieces): every repair part, filterable by brand, model, category, quality tier and price
- [Accessories](https://www.gtonline.fr/accessoires): cases, chargers, cables, audio, connected objects
- [Screen protection](https://www.gtonline.fr/protection): tempered glass and films by model
- [Laptop parts](https://www.gtonline.fr/informatique): panels, memory, storage, laptop accessories
- [Workshop equipment](https://www.gtonline.fr/equipements): tools, consumables and machines for repairers
- [Electric mobility parts](https://www.gtonline.fr/mobilite): spare parts for electric scooters, wheels and hoverboards
- [Devices](https://www.gtonline.fr/appareils): second-hand and refurbished phones and laptops
- [Guided diagnostic](https://www.gtonline.fr/diagnostic): symptom → part wizard
- [Repair coaching](https://www.gtonline.fr/coaching): 30-minute assisted repair at the workshop: solo 29,90 €, duo 24,95 € per person; booking online
- [About](https://www.gtonline.fr/a-propos): who runs the shop, what it sells, warranties, delivery, legal identity (also at /about)
- [Contact](https://www.gtonline.fr/contact): contact form and map; email contact@gtonline.fr
- [The workshop](https://www.gtonline.fr/atelier): address, how to get there, photos
- [Le Mag (blog)](https://www.gtonline.fr/blog): repair guides, FAQ, workshop news

## Policies & trust

- [Delivery & delays](https://www.gtonline.fr/livraison): the six steps from order to doorstep, the order cut-off, and the delivery methods and prices actually configured; consult this page before promising a carrier, a price or a delay
- [Terms of sale (CGV)](https://www.gtonline.fr/legal/cgv): French legal guarantees on every product (2-year conformity guarantee from delivery, new or used, with a defect presumed to exist at delivery if it appears within 24 months, 12 for used goods; plus latent defects), 14-day withdrawal right, payment and dispute terms
- [Legal notice](https://www.gtonline.fr/legal/mentions-legales): GT ONLINE SASU, SIRET, VAT number, publisher, host, consumer mediator
- [Privacy policy](https://www.gtonline.fr/legal/confidentialite): data collected, purposes, retention, GDPR rights (also at /privacy)
- [Order tracking](https://www.gtonline.fr/commandes): customer order status, invoices, cancellation before dispatch

## Catalogue by part type

- [Écrans et vitres d’écran](https://www.gtonline.fr/pieces/categorie/ecrans)
- [Batteries de remplacement](https://www.gtonline.fr/pieces/categorie/batteries)
- [Vitres arrière](https://www.gtonline.fr/pieces/categorie/vitres-arriere)
- [Modules caméra arrière](https://www.gtonline.fr/pieces/categorie/cameras)
- [Haut-parleurs](https://www.gtonline.fr/pieces/categorie/haut-parleurs)
- [Nappes de proximité](https://www.gtonline.fr/pieces/categorie/nappes-proximite)
- [Écouteurs internes](https://www.gtonline.fr/pieces/categorie/ecouteurs)
- [Connecteurs et cartes de charge](https://www.gtonline.fr/pieces/categorie/dock)
- [Châssis et cadres](https://www.gtonline.fr/pieces/categorie/chassis)

## Catalogue by brand

- [Apple](https://www.gtonline.fr/pieces/marque/apple)
- [Samsung](https://www.gtonline.fr/pieces/marque/samsung)
- [Google Pixel](https://www.gtonline.fr/pieces/marque/pixel)
- [OnePlus](https://www.gtonline.fr/pieces/marque/oneplus)
- [Xiaomi](https://www.gtonline.fr/pieces/marque/xiaomi)
- [Huawei](https://www.gtonline.fr/pieces/marque/huawei)
- [Oppo](https://www.gtonline.fr/pieces/marque/oppo)
- [Honor](https://www.gtonline.fr/pieces/marque/honor)
- [Motorola](https://www.gtonline.fr/pieces/marque/motorola)
- [Realme](https://www.gtonline.fr/pieces/marque/realme)
- [Asus](https://www.gtonline.fr/pieces/marque/asus)
- [Sony](https://www.gtonline.fr/pieces/marque/sony)
- [Vivo](https://www.gtonline.fr/pieces/marque/vivo)
- [Nothing](https://www.gtonline.fr/pieces/marque/nothing)
- [LG](https://www.gtonline.fr/pieces/marque/lg)
- [BLU](https://www.gtonline.fr/pieces/marque/blu)
- [Microsoft](https://www.gtonline.fr/pieces/marque/microsoft)
- [Alcatel](https://www.gtonline.fr/pieces/marque/alcatel)
- [Blackberry](https://www.gtonline.fr/pieces/marque/blackberry)
- [Revvl](https://www.gtonline.fr/pieces/marque/revvl)
- [TCL](https://www.gtonline.fr/pieces/marque/tcl)
- [Amazon](https://www.gtonline.fr/pieces/marque/amazon)
- [ZTE](https://www.gtonline.fr/pieces/marque/zte)
- [Lenovo](https://www.gtonline.fr/pieces/marque/lenovo)
- [Nokia](https://www.gtonline.fr/pieces/marque/nokia)
- [CoolPad](https://www.gtonline.fr/pieces/marque/coolpad)
- [Nintendo](https://www.gtonline.fr/pieces/marque/nintendo)
- [Cat](https://www.gtonline.fr/pieces/marque/cat)
- [Infinix](https://www.gtonline.fr/pieces/marque/infinix)
- [Oculus](https://www.gtonline.fr/pieces/marque/oculus)
- [Tecno](https://www.gtonline.fr/pieces/marque/tecno)
- [Oukitel](https://www.gtonline.fr/pieces/marque/oukitel)
- [DJI](https://www.gtonline.fr/pieces/marque/dji)
- [Valve](https://www.gtonline.fr/pieces/marque/valve)
- [GoPro](https://www.gtonline.fr/pieces/marque/gopro)
- [Insta360](https://www.gtonline.fr/pieces/marque/insta360)
- [Kyocera](https://www.gtonline.fr/pieces/marque/kyocera)
- [HP](https://www.gtonline.fr/pieces/marque/hp)
- [Garmin](https://www.gtonline.fr/pieces/marque/garmin)
- [Acer](https://www.gtonline.fr/pieces/marque/acer)

## Optional

- [Newsletter](https://www.gtonline.fr/newsletter): sign-up and preferences
- [Sitemap: pages](https://www.gtonline.fr/sitemaps/pages.xml)
- [Sitemap: products](https://www.gtonline.fr/sitemaps/products-0001.xml): first shard; the index lists the others
- [robots.txt](https://www.gtonline.fr/robots.txt)