# 4K Garden (4K花园)

> 4K Garden - legally Sikai Garden Network Technology (Guangzhou) Co., Ltd.
> (四开花园网络科技（广州）有限公司) - is a Chinese ultra-high-definition video technology
> company founded in 2016 and headquartered in Guangzhou, Guangdong. It produces,
> aggregates and distributes 4K and 8K content, runs UHD live production over public
> networks and 5G, operates large outdoor naked-eye 3D LED displays, builds VR and
> 8K 3D capture hardware, and sells 5G video ringtone services with the three Chinese
> carriers. Its AI product, Diebian AI (蝶变 AI), is a video super-resolution platform.

This file was GENERATED by API Evangelist from 4K Garden's public surface. 4K Garden
does not publish an llms.txt of its own.

## What is machine-readable here

4K Garden operates no developer programme: there is no developer portal, no API
documentation, no SDK, no changelog and no status page. One real machine-readable
contract does exist and is served publicly without credentials - a springdoc-generated
OpenAPI 3.0.3 document describing the backend of the Diebian AI super-resolution web
application. It is a backend contract for a first-party product rather than a published
developer API, and it is recorded here on that basis.

## Diebian AI Super-Resolution API

- OpenAPI 3.0.3: https://video-cn.fly4k.com/api/v3/api-docs
- Product site: https://www.fly4k.com/
- 58 paths, 63 operations, 90 component schemas
- Every operation carries an operationId and a summary
- No securitySchemes are declared; authentication is a bearer token obtained from
  POST /api/auth/login, which returns a `token`. The header name is not published.
- Errors use a bespoke {code, msg, data} envelope, not RFC 9457
- Pagination is page / page_size with page, page_size and total in the response
- No idempotency mechanism on any of the 43 mutating operations
- No rate-limit headers and no 429 declared
- Account registration is invite-gated (GET /api/auth/register-config returns
  invite_code_required: true)

### Anonymously readable endpoints

- GET /api/auth/health - service health and version
- GET /api/user/credit-rules - credit consumption rates by output frame rate
- GET /api/user/productList - the credit package catalogue with prices in CNY
- GET /api/user/enterprise-plans - currently an empty list

### Commercial model

Prepaid credits ("water crystals", 水晶) bought in packages of 99, 500, 2,500 and
10,000 CNY, spent per minute of video at 25/50/100 credits depending on whether output
frame rate is up to 30fps, up to 60fps, or above.

## Company

- Website: https://www.4kgarden.com/
- About: https://www.4kgarden.com/skabout.html
- News: https://www.4kgarden.com/sknews.html
- Careers: https://www.4kgarden.com/skjoin.html
- 4K content: https://www.4kgarden.com/skcontent.html
- 4K live: https://www.4kgarden.com/sklive.html
- 4K production: https://www.4kgarden.com/skmake.html
- Business contact: bd@4kgarden.com

## What does not exist

No MCP server. No A2A agent card. No /.well-known/ documents on any host. No GraphQL,
gRPC, SOAP or AsyncAPI surface. No webhooks. No SDK in any registry. No GitHub
organisation. No status page, changelog, deprecation policy or SLA.

## Provenance

Assembled by API Evangelist (https://apievangelist.com) from publicly reachable
material only. This is a third-party profile; API Evangelist does not operate this API.
Corrections and removal: info@apievangelist.com