Custom software for AI agents and workflows with their own rules
When your team hands requests, draft quotes or reconciliations to an AI agent, the agent needs access to your data, integrations with your programs, an approval by a person and a log of what it did. We build that software. Where a workflow has rules so specific that no standard program fits, it becomes a standalone business app. Either way, the code is yours, tested and maintainable. You work directly with the developer, not an account manager.

When owned software pays off
- An AI agent is meant to take over a task, but the data it needs sits in programs it cannot reach.
- An agent's results must be checked before they leave the company and stay traceable afterwards.
- Your workflow has rules and exceptions that a standard program only handles with workarounds, such as quotation logic for many variants.
- You want to own the software and data in the long term instead of being tied to one vendor.
What an agent needs day to day
An agent works only as well as it can reach your business. We build the parts it is missing: data access to the programs you already use, integrations, an approval by a person before anything leaves the company, an audit log of every action and, where your team works alongside it, a simple interface. Often one of these building blocks is enough. A standalone application is built where the workflow has rules that no existing program represents.
AI agents and their tools
Data access and integrations
Approvals and audit logs
Integration with ERP and CRM
Interfaces for your team
Standalone business appsWhat we have already built
Sales research and outreach drafts
An AI sales assistant reads websites for buying signals, scores the fit and drafts the outreach. Sales reviews and sends.
Quotation logic and CPQ configurators
When variants have rules that a standard ERP does not know. Those rules run as fixed logic in the system, not in an agent.
Stock and project status
When warehouse, reservations and projects belong together. A photo prefills the item draft; a member of staff checks it and enters dimensions and quantity manually.
Handovers to accounting
A reproducible export from Business Central to DATEV. The rule was clear, so a fixed automation without an agent was enough.
Customer portals with machine data
Data from more than 100 robots as evidence for sales and service. Each customer sees only its own machines.
Where this applies in your business
We use agents and the software around them where repeated work carries your business: in sales, purchasing, production and warehousing, projects, and accounting.
Sales & Marketing
Procurement
Manufacturing
Warehousing
Project & Service Management
Finance & AccountingIndustries we know
Important work falls between standard programs in many industries. We know the ones below from client projects, and contract manufacturing from the sales assistant for MAFU-SHERPA and our own market research. The list shows where we have experience, not where we limit ourselves.
Manufacturing
Medical Technology
E-Commerce

How we work
We start with your team's work, not with a feature list. An opportunity assessment often shows which tasks an agent can take over and what it is missing. Software comes only in the development stage, and only where existing tools and their ready connectors are not enough. What we build is first tested as a short prototype with real users. What works is hardened for production: permissions, data model, agent tools, tests, monitoring and documentation. Human review goes where mistakes get expensive, not evenly across everything.
Where standard is enough, we say so. And where the rule for the normal case fits in three sentences, we take a fixed automation instead of an agent: faster, cheaper and easier to verify. With AI, such automations now take far less effort to build, and an agent uses them for every step that follows a rule. The decision framework is in Custom Software vs. Off-the-Shelf.
For technical leads: we build with widely used open-source technologies and web standards, in our projects mostly TypeScript with React, Next.js or Cloudflare Workers. Every change passes automated tests before it goes live, and other developers can take over the code.
If you want to review a workflow, let us discuss a concrete workflow.
Talk to us about your workflow
We like to start with the back-office work that slows your business down, which of those tasks an AI agent can take over, and which software it needs for that.
Give us a call:
+49 30 3505 6713Or write to us:
hello@certaince.comChat with us on WhatsApp:
https://wa.me/493035056713


