Changelog

This page lists what changed in the Grondia API and on this site, newest first. An entry that changes the API names the API version it applies to.

Every response from the endpoints in the API reference carries the version in an X-API-Version header. The current version is 1.0.0. Grondia’s policy is at least 12 months’ notice before a version is switched off; once a version has a sunset date, its responses also carry Deprecation and Sunset headers. No version has a sunset date today. Versioning and deprecation says what may change within a version and how the end of one is announced.

Developer site launched

2026-10-19 · API version 1.0.0

Added

This site. What you can build, the Core concepts, a Quickstart and the Credentials page, the Partner program and the page for device makers; five recipes (Channel managers, Accounting and ERP, Shop and restaurant tills, Guest messaging and CRM and Zapier); eight guides (Webhooks, Syncing changes, Errors, Retrying safely, Rate limits, Versioning, Dates, times and money and Personal data); and a Glossary of the German campground terms.
The API reference, generated from the OpenAPI 3.1 document the production API serves for partners: the bookings, sites, customers, invoices, availability (ARI), webhook and till (POS) endpoints under /api/v1/public/, and the 13 webhook events. Open the API reference, or download a copy of the same document from this site as /openapi.json.
The partner OpenAPI document. GET /api/v1/public/partner/schema/ on https://api.campone.ch needs no key. It answers YAML; send Accept: application/json for JSON (?format=json is ignored).
For coding agents. /llms.txt on this site, with /llms-full.txt for the whole documentation in one file.

Changed

The deprecation link. The Link header that comes with a Deprecation notice now points to https://developers.grondia.com/guides/versioning/ (Versioning). It is only sent once a version has a sunset date, so no response carries it today.

No existing endpoint or field changed with this launch.