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etg24 Developer Platform

Build on top of etg24.

One infrastructure for property management data, AI and automation. Integrate through REST and MCP — with enterprise-grade reliability, a full audit trail and rollback safety.

Start buildingExplore the API
Hyperscaler infrastructure

Runs on hyperscaler cloud infrastructure with high availability.

MCP at scale

Hundreds of tools in our internal MCP — battle-tested in production.

Audit & rollback

Every change is recorded and attributable. Soft delete keeps agent actions reversible.

Partner ecosystem

A growing ecosystem of vendors and product partners builds on etg24.

Proven scale

monthly users
100k+
owners' meetings weekly
300+
PDF pages processed daily
50k+
API requests daily
3M+
search across 10k documents
<1s
I run a property management company

From signup to first API call in minutes

Sign up self-service and get the full enterprise tier free for one month — REST API and MCP included, no sales call required. Create an API key, connect your agent, done.

Start as a customer
terminal
$ curl "https://api.etg24.de/propertymanagement/v2/query/contacts" \
    -H "Authorization: Bearer YOUR_API_KEY"

{
  "pagination": {"total": 12, "limit": 50, "offset": 0},
  "contacts": [{"id": "…", "firstName": "…", "lastName": "…"}]
}
I build a product on etg24

One authenticated surface for your product

There is no self-registration for vendors — contact us and we onboard product partners through a short, structured integration process. The same keys, scopes and audit trail power REST and MCP alike.

Start as a vendor
mcp client
{
  "mcpServers": {
    "etg24": {
      "url": "https://api.etg24.de/propertymanagement/v2/mcp",
      "headers": {"Authorization": "Bearer <API_KEY>"}
    }
  }
}

Explore the platform

From your first API call to deep architectural topics — everything is documented here.

Use Cases

Inspiration: onboarding automation, enquiry triage, document extraction, reporting, portfolio-wide search.

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Getting Started

Signup, the free enterprise tier, your first API call and code snippets.

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Core Concepts

CQRS, full coverage, semantic search, authentication & security, performance and webhooks.

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REST API

The Property Management API — queries, commands, concepts and limits.

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MCP

The Model Context Protocol server and its tool reference.

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FAQ

Key rotation, permission scopes, volume and limits.

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AX
Partner

Algebra X

A German AI and automation agency for small and medium-sized companies. Algebra X co-built the etg24 AI and infrastructure platform with us — they help customers automate workflows, use the APIs and scope what is achievable.

Meet Algebra X

Ready to build on etg24?

From your first API call to production automations — the docs have you covered. REST, MCP, webhooks and agent keys, documented end to end.

Start buildingExplore the API