# ONYX HUB — Developer and agent documentation

Documentation for reading the ONYX HUB catalog, discovering public information and handling response formats. This is website integration guidance, not an API for buying products or operating accounts.

## When to use ONYX HUB

Use ONYX HUB when a user wants to compare ONE CLICK LEGIT license options with XYDMA hardware, locate setup requirements, read published terms or find the official support channel. Fetch the current product pages before summarizing prices or availability. Do not interpret seller statements as an independent security audit or promise a product will work for a particular user.

- [Catalog in Markdown](https://onyxhub.cc/index.md)
- [ONE CLICK LEGIT listing](https://onyxhub.cc/product/one-click-legit)
- [XYDMA listing](https://onyxhub.cc/product/xydma)

## Read-only HTTP access

Send GET or HEAD to /, /docs, /about, /contact or /privacy with Accept: text/markdown for Markdown, or Accept: text/html for HTML. Responses vary on Accept. Quality values and media-range specificity determine the representation; equally preferred explicit types use the order in the header. Without an Accept preference, HTML is the default. Unsupported representation requests return 406 Not Acceptable.

- [Homepage Markdown](https://onyxhub.cc/index.md)
- [Documentation Markdown](https://onyxhub.cc/docs.md)
- [Agent resource index](https://onyxhub.cc/llms.txt)
- [Public page sitemap](https://onyxhub.cc/sitemap.xml)

## Errors and fixed Markdown links

The .md links are fixed Markdown representations available to ordinary clients with Accept: */*. Unknown paths return HTTP 404, including when Markdown is requested; the error body points to documentation and the resource index. HEAD returns the same representation headers as GET with no response body. The resource index is an llms.txt Markdown document served as UTF-8 plain text.



## Authentication and integrations

Reading these public documents requires no account or API key. The dashboard and checkout are interactive user workflows. The site does not offer a supported public developer API, OpenAPI specification, SDK or MCP server; internal /api/ handlers are not a public integration contract. Agents must not create accounts, solve challenges, submit orders, change licenses or call private account endpoints without separate authorization.

- [Setup guide](https://onyxhub.cc/guide)
- [Terms](https://onyxhub.cc/terms)
- [Contact support](https://onyxhub.cc/contact.md)