Sdui

Sdui is a Koblenz, Germany based education-technology company (Sdui GmbH, part of the Sdui Group / Seven Education) that builds GDPR-compliant digital communication, organisation and administration software for schools, preschools and school authorities across Germany, Switzerland, France and Spain. The platform spans three suites — Communication and Organisation (the Sdui messenger app, chat, video conferencing, calendar and announcements), Planning and Administration (timetabling, resource planning, an AI timetable planner and document management), and Learning and Grade Management (digital gradebook and lesson planning) — and the group also operates the Pupil, Additio, Konecto, Fox Education and OSS Messenger brands. Sdui runs a production JSON API at https://api.sdui.app/v1 that powers its own web and mobile clients and its WebUntis messenger integration, but it publishes no public developer portal, API reference or machine-readable specification; integration access is arranged through the partner and sales channel.

Sdui publishes 2 APIs on the APIs.io network. Tagged areas include Company, Education, EdTech, Schools, and Communications.

Sdui’s developer surface includes support, engineering blog, signup flow, and 15 more developer resources.

🌐 Visit website 📡 Source on GitHub
27.7/100 thin ▬ flat Agent 11/100 agent aware saas Full breakdown ↓
scored 2026-09-01 · rubric v0.17.2
2 APIs 1 MCP Servers
CompanyEducationEdTechSchoolsCommunicationsMessagingTimetablingGrade ManagementGermanyGDPR

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-01 · rubric v0.17.2
Composite quality — 27.7/100 · thin
Contract Quality 0.0 / 21
Developer Ergonomics 3.2 / 17
Access Clarity 3.6 / 17
Operational Transparency 2.9 / 11
Contract Governance 1.9 / 10
Discoverability 5.8 / 9
Regulatory Posture 11.4 / 15
Agent readiness — 11/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Surface 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Education & Research regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/sdui: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

Sdui Platform API

The production JSON API behind the Sdui school-communication platform, serving the Sdui web app, the iOS/Android clients and the WebUntis messenger integration. Every resource p...

Sdui Website MCP Server

A Model Context Protocol server exposed by the sdui.de WordPress site through the `mcp` REST namespace and advertised at /.well-known/oauth-protected-resource. The endpoint answ...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Sdui Website MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Sdui Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Sdui Rate Limits

0 limits

RATE LIMITS

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Sdui Authentication

0 schemes

SECURITY

Sdui Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Sdui Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Sdui Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp
SignUp

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown
WellKnown
 LLMsTxt
LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Lifecycle
Lifecycle
 Conformance
Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

Packages
Packages

Access & Security 4

Authentication, authorization, and security posture

Security
Security
 SecurityTxt
SecurityTxt
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage
 RateLimits
RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy
 Plans
Plans

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: sdui
name: Sdui
description: Sdui is a Koblenz, Germany based education-technology company (Sdui GmbH, part of the Sdui Group / Seven Education)
  that builds GDPR-compliant digital communication, organisation and administration software for schools, preschools and school
  authorities across Germany, Switzerland, France and Spain. The platform spans three suites — Communication and Organisation
  (the Sdui messenger app, chat, video conferencing, calendar and announcements), Planning and Administration (timetabling,
  resource planning, an AI timetable planner and document management), and Learning and Grade Management (digital gradebook
  and lesson planning) — and the group also operates the Pupil, Additio, Konecto, Fox Education and OSS Messenger brands.
  Sdui runs a production JSON API at https://api.sdui.app/v1 that powers its own web and mobile clients and its WebUntis messenger
  integration, but it publishes no public developer portal, API reference or machine-readable specification; integration access
  is arranged through the partner and sales channel.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
image: https://sdui.de/wp-content/uploads/2024/02/Sdui-Gruppe-Logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/sdui/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-26'
modified: '2026-08-26'
tags:
- Company
- Education
- EdTech
- Schools
- Communications
- Messaging
- Timetabling
- Grade Management
- Germany
- GDPR
tags_raw:
- Company
- Education
- EdTech
- Schools
- Communication
- Messaging
- Timetabling
- Grade Management
- Germany
- GDPR
apis:
- name: Sdui Platform API
  description: 'The production JSON API behind the Sdui school-communication platform, serving the Sdui web app, the iOS/Android
    clients and the WebUntis messenger integration. Every resource path probed (/v1/users, /v1/schools) answers HTTP 401 with
    a German-language envelope, and an unauthenticated WWW-Authenticate: Bearer challenge is returned. Sdui publishes no OpenAPI,
    no API reference and no developer portal; the surface below is recorded from live unauthenticated probes only.'
  humanURL: https://sdui.de/overview/?lang=en
  baseURL: https://api.sdui.app/v1
  tags:
  - Education
  - Schools
  - Communications
  tags_raw:
  - Education
  - Schools
  - Communication
  properties:
  - type: Authentication
    url: authentication/sdui-authentication.yml
  - type: Conventions
    url: conventions/sdui-conventions.yml
  - type: ErrorCatalog
    url: errors/sdui-problem-types.yml
- name: Sdui Website MCP Server
  description: A Model Context Protocol server exposed by the sdui.de WordPress site through the `mcp` REST namespace and
    advertised at /.well-known/oauth-protected-resource. The endpoint answers JSON-RPC over HTTP and returns HTTP 401 mcp_unauthorized
    to anonymous callers; the paired authorization server metadata at /.well-known/oauth-authorization-server declares authorization_code
    + PKCE (S256) with a single `mcp` scope. This is the marketing/CMS site's agent surface, not the Sdui Platform API.
  humanURL: https://sdui.de/
  baseURL: https://sdui.de/wp-json/mcp
  tags:
  - MCP
  - Agents
  properties:
  - type: MCPServer
    url: mcp/sdui-mcp.yml
  - type: OAuthScopes
    url: scopes/sdui-scopes.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://sdui.de/?lang=en
- type: Support
  url: https://support.sdui.de/
- type: Blog
  url: https://sdui.de/blog/?lang=en
- type: TermsOfService
  url: https://sdui.de/agb/
- type: PrivacyPolicy
  url: https://sdui.de/privacy-policy/?lang=en
- type: SignUp
  url: https://sdui.app/
- type: StatusPage
  url: https://status.sdui.de/
- type: Security
  url: https://support.sdui.de/en_US/96472-allgemeine-fragen/security-concern-what-to-do
- type: SecurityTxt
  url: well-known/sdui-security.txt
- type: WellKnown
  url: well-known/sdui-well-known.yml
- type: VulnerabilityDisclosure
  url: security/sdui-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/sdui-domain-security.yml
- type: Lifecycle
  url: lifecycle/sdui-lifecycle.yml
- type: Conformance
  url: conformance/sdui-conformance.yml
- type: Packages
  url: packages/sdui-packages.yml
- type: LLMsTxt
  url: llms/sdui-llms.txt
- type: Plans
  url: plans/sdui-plans-pricing.yml
- type: RateLimits
  url: rate-limits/sdui-rate-limits.yml
x-enrichment:
  date: '2026-08-26'
  status: enriched
  artifacts_added: 17
  pass: local-v1
x-coverage:
  state: covered
  reason: null
  detail: 'Sdui runs a real production API at https://api.sdui.app/v1, but publishes no contract for it: every resource answers
    HTTP 401 "Bitte zuerst einloggen." behind WWW-Authenticate Bearer, and the 176-page sdui.de sitemap contains no developer
    portal, API reference or pricing route. What Sdui does serve machine-readably was captured — an RFC 9116 security.txt
    on sdui.app, RFC 8414 and RFC 9728 OAuth metadata on sdui.de, and a live OAuth-gated Model Context Protocol server at
    https://sdui.de/wp-json/mcp/mcp-oauth-server that belongs to the WordPress marketing site rather than the school platform.'
  evidence:
  - url: https://api.sdui.app/v1/users
    status: 401
  - url: https://api.sdui.app/v1/openapi.json
    status: 404
  - url: https://sdui.de/.well-known/oauth-protected-resource
    status: 200
  - url: https://sdui.de/wp-json/mcp/mcp-oauth-server
    status: 401
  - url: https://sdui.app/.well-known/security.txt
    status: 200
  checked: '2026-08-26'

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