# Sdui

> Sdui GmbH (Koblenz, Germany; part of the Sdui Group / Seven Education) builds GDPR-compliant digital
> communication, organisation and administration software for schools, preschools and school
> authorities in Germany, Switzerland, France and Spain. Sdui runs a production JSON API that powers
> its own apps and its WebUntis messenger integration, but publishes no public developer portal, API
> reference or machine-readable specification.

This file was generated by API Evangelist from probed evidence. Sdui does not publish an llms.txt
(https://sdui.de/llms.txt returns HTTP 404). Nothing below is inferred: every statement is either read
from a document Sdui serves or observed on a live unauthenticated request on 2026-08-26.

## What an agent can and cannot do here

- There is NO OpenAPI, Swagger, GraphQL SDL, AsyncAPI, Protobuf or WSDL on any Sdui host. Probed
  /openapi.json, /openapi.yaml, /swagger.json, /api-docs, /docs, /redoc, /v1/openapi.json and
  /graphql on api.sdui.app — all 404.
- The Sdui Platform API at https://api.sdui.app/v1 is real and live, but every resource is
  authenticated. It answers `WWW-Authenticate: Bearer` and returns HTTP 401 with the German string
  "Bitte zuerst einloggen." Token issuance is not publicly documented.
- One endpoint answers anonymously: GET https://api.sdui.app/v1/status returns deployment metadata
  (mode, allowed origin targets, pod name, release commit SHA).
- Sdui DOES serve a remotely-callable MCP server, but it belongs to the WordPress marketing site, not
  the school platform: https://sdui.de/wp-json/mcp/mcp-oauth-server (OAuth, HTTP 401 anonymous).
- No A2A agent card exists on any host. sdui.app answers HTTP 200 with its SPA HTML shell for every
  /.well-known/* path; that is not a document.

## Machine-readable documents Sdui actually serves

- [OAuth authorization server metadata](https://sdui.de/.well-known/oauth-authorization-server): RFC 8414. authorization_code + refresh_token, PKCE S256, scope `mcp`, public clients.
- [OAuth protected resource metadata](https://sdui.de/.well-known/oauth-protected-resource): RFC 9728. Names the MCP endpoint and the `mcp` scope.
- [security.txt](https://sdui.app/.well-known/security.txt): RFC 9116. security@sdui.de, policy URL, Expires 2027-02-23.

## Human surfaces

- [Website](https://sdui.de/?lang=en): company and product overview.
- [Communication and Organisation](https://sdui.de/communication-organisation/?lang=en): the messenger, chat, video and calendar suite.
- [Planning and Administration](https://sdui.de/planning-administration/?lang=en): timetabling, resource planning, AI timetable planner.
- [Learning and Grade Management](https://sdui.de/learning-grade-management/?lang=en): digital gradebook and lesson planning.
- [App / sign in](https://sdui.app/): the tenant web application.
- [Support](https://support.sdui.de/): Seven Education help center.
- [Blog](https://sdui.de/blog/?lang=en)
- [Status](https://status.sdui.de/): human status page; no machine-readable feed (history.rss, summary.json and api/v2/status.json all 404).
- [Partners](https://sdui.de/our-partners/?lang=en): integration and reseller partners.
- [Vulnerability disclosure](https://support.sdui.de/en_US/96472-allgemeine-fragen/security-concern-what-to-do): report to security@sdui.de.
- [Terms](https://sdui.de/agb/) · [Privacy](https://sdui.de/privacy-policy/?lang=en) · [Imprint](https://sdui.de/imprint/?lang=en)

## Integrations

Sdui's integrations are bilateral and proprietary — no education interoperability standard (OneRoster,
LTI, Ed-Fi, SIF, SCIM) is declared on any contract or page.

- [WebUntis / Untis](https://sdui.de/sdui-untis-kooperation/): the Sdui Messenger inside WebUntis; users and classes sync from WebUntis within six hours. Partner contact untis@sdui.de.
- Stüber Systems (DAVINCI, ENBREA): timetable interface; digital class register integration in progress.
- Moodle and other LMS products: embedded at the menu level.

## Optional

- [Careers / engineering](https://tech.sdui.de)
- [Academy](https://academy.sdui.de/)
- [Press](https://sdui.de/press/?lang=en)