Mobile app needs data
You want to build (or have built) an iPhone or Android app. The app needs to talk to your CRM, shop or booking system. A clean API is the foundation, without which any mobile dev will laugh at you.
API Development
Your systems talk to the world.
REST APIs and webhooks so your mobile app, your partners and marketplaces can work directly with your system. No manual exports, no file battles by email. For AI assistants see Custom MCP Server.
What you get
Production APIs, not proofs-of-concept
We build APIs you can stably base mobile apps, partner systems or third-party tools on.
- REST API per OpenAPI standard
- Clear endpoints, consistent data formats, versioned interface. Developers and partners know immediately how to integrate.
- Webhooks for incoming events
- When your customer orders at a partner, the info flows into your system automatically. No more nightly syncs, real-time is normal.
- Authentication and rate limits
- API key auth or OAuth depending on the case. Per-client limits, audit log, abuse detection. Security like professional SaaS providers.
- Automatic documentation
- OpenAPI docs generated from code, always current. Developers on your side or at partners can test and integrate immediately.
- Deploy on EU infrastructure
- Hosting on our EU servers or on your own via Docker. Monitoring, logs, alerting, rollback via Git revert.
- Updates and maintenance included
- Managed plan handles framework updates, security patches, small adjustments. You call, we do.
Who this is for
When an API really helps
Four typical SMB situations where your own API suddenly becomes critical.
Partner or sales need data
A partner wants to show your products in their portal. Or your field sales needs live data on the road. Instead of CSV exports by email you give an API access, they pull current data automatically.
Marketplace connection
You want to be listed on Amazon, Etsy, Idealo or a Mallorca portal. These marketplaces want your product data, prices and stock in real time. An API provides that, manual maintenance doesn't scale.
Automation in the other direction
Your CRM should automatically feed your bookkeeping, your shop should send orders to the warehouse, your form should land in CRM. Webhook plus API is the standard pattern.
How we work
Four steps to a productive API
- 01
Use case clarification
Who uses the API? Mobile app, partner, marketplace, internal tool? That drives design decisions.
- 02
API design
Endpoints, data formats, error handling, versioning. You get the design document before we build.
- 03
Build and test
2 to 4 weeks depending on scope. Staging environment with test data, you can test live with tools like Postman.
- 04
Documentation and launch
OpenAPI docs, example code, test account for developers. We stand by for questions in the first 4 weeks.
Pricing
From EUR 3,500 one-off or EUR 399 per month
A productive API with 5-10 endpoints starts at EUR 3,500 one-off. Managed plan including hosting, updates and monthly adjustments from EUR 399 per month. Larger multi-tenant or high-traffic projects on request.
See pricing and packagesFAQ
Frequently asked
What's the difference to Custom MCP Server?
Short: REST API is for humans and other software, MCP Server is specifically for AI assistants. Both use the same data underneath but in different protocols. We can build either, often combined.
How long does an API last?
If we do it right: years. We version the API (v1, v2) so old clients keep working even if we change things internally. A switch is planned, not chaotic.
Where does the data live?
On your own infrastructure or with us on EU servers with a data processing agreement. Data doesn't leave the EU. For sensitive data we recommend your own hardware or dedicated hosting.
Who can use the API?
Whoever you authorise. We give you an admin panel where you can issue and revoke API keys for partners, apps or internal tools.
Can I extend it later myself?
Yes. The API is in your git repository, we document clearly, your developers or a new provider can build on top. No lock-in.
What if the API goes down?
Managed plan has SLA with monitoring and incident response. One-off plan: you have code and deployment, can react yourself or call us on-demand.
Next step
30 minutes honest assessment.
Describe who should use your API. We honestly say whether an API is the right path or whether it can be simpler.