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etg24 Developer Platform

Build on top of etg24.

A unified infrastructure for property management data, AI, and automation. Integrate seamlessly via REST and MCP — backed by enterprise-grade reliability, complete audit trails, 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 MCP server — battle-tested in daily production.

Audit & rollback

Every change is attributable and recorded in the audit trail. Soft delete keeps agent actions fully reversible.

Partner ecosystem

A growing ecosystem of software vendors and proptech partners builds on etg24.

Proven scale

monthly active users
>100k
homeowners' assembly votes / month
100k
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, and start building.

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

A single, authenticated interface for your product

We onboard product partners through a short, structured integration process — contact us to get started. The same keys, scopes, and audit trail power REST and MCP alike.

Start as a partner
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, tenant & owner 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 servers and their tool reference.

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FAQ

Key rotation, permission scopes, volume and limits.

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AlgebraX Logo
Partner

AlgebraX

German AI and automation service provider for SMBs. AlgebraX co-developed the etg24 AI and infrastructure platform with us — helping customers automate workflows, leverage APIs, and evaluate technical potential.

Ready to build on etg24?

From your first API call to production automations — comprehensive documentation for REST, MCP, webhooks, and agent keys.

Start buildingExplore the API