> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://fiftytwo-demo.ferndocs.com/docs/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://fiftytwo-demo.ferndocs.com/_mcp/server.

# Documentation

## Docs

- [Introduction](https://fiftytwo-demo.ferndocs.com/docs/introduction.md): What 52ViKING is, what the APIs do, and where to start.
- [Authentication](https://fiftytwo-demo.ferndocs.com/docs/authentication.md): Exchange credentials for a JWT, then send it as a Bearer token.
- [Your first API call](https://fiftytwo-demo.ferndocs.com/docs/first-call.md): Sign in, price a basket, and read the discount the till would have applied.
- [What's new](https://fiftytwo-demo.ferndocs.com/docs/changelog/llms.txt)
- [Errors and retries](https://fiftytwo-demo.ferndocs.com/docs/errors.md): Status codes across the 52ViKING APIs, and what each one asks you to do.
- [Glossary](https://fiftytwo-demo.ferndocs.com/docs/glossary.md): The 52ViKING domain language, and where each term is explained in full.
- [Sync a product catalog](https://fiftytwo-demo.ferndocs.com/docs/guides/sync-catalog.md): Push articles, groups, and promotions into 52ViKING, and confirm they landed.
- [Price a basket from a webshop](https://fiftytwo-demo.ferndocs.com/docs/guides/price-a-basket.md): Get till-identical totals online, including every promotion the store is running.
- [Import webshop sales into the POS](https://fiftytwo-demo.ferndocs.com/docs/guides/import-sales.md): Register finished external sales so a customer can return the goods in any store.
- [Consume transaction events](https://fiftytwo-demo.ferndocs.com/docs/guides/transaction-events.md): Receive POS log events as they happen over Apache Pulsar, instead of polling.