zcloud.cz
Custom software development
Web applications, APIs and integrations, and AI automation on .NET, Blazor and Azure.
Run by Martin Zahálka, a .NET and AI agent developer with 10+ years of experience.
Services
Custom web applications
Design and development of web applications and backends in ASP.NET Core, C# and Blazor.
APIs and integrations
Connecting systems and databases (SQL Server, PostgreSQL, NoSQL) and Azure cloud services.
AI automation and agents
MCP servers, AI integrations with tool calling and automation — document data extraction, payment matching, workflows without user intervention.
Architecture
Designing scalable, maintainable architecture or optimizing an existing one.
Products and apps
AgentWall
A policy, human-approval and audit layer between AI agents (Claude Code, Codex, Gemini CLI, OpenCode, VS Code, Hermes Agent) and company systems. It decides on every tool call (MCP) and, in isolated mode, every outbound network connection an agent makes. Available through a pilot programme.
Fakvio
Cloud invoicing for freelancers and small businesses in Czechia and Slovakia: advance invoices, VAT reports, ISDOC, QR payments, automatic payment matching, receiving invoices by e-mail and an MCP connection to AI apps. The app runs in Czech and English; currently free in early access. Open the app
PdfJoin
Merge PDFs and images (JPG/PNG) into one PDF right in the browser — files never leave your computer. Open source (Czech UI).
zDrive in development
Cloud storage with file sync and photo management; clients for web, Android, iOS, Windows and macOS.
Open source
- ZMapper — a high-performance object mapper for .NET with an AutoMapper-like fluent API and source generation via Mapperly.
- BlazorHtmlEditor — an HTML editor component for Blazor.
- PdfJoin — source code of pdf.zcloud.cz.
References
Past cooperation includes Growell.cz, Worklio, Raiffeisenbank, UNIQA, Partners and EffiChem.
Selected custom projects (a multitenant ERP for a manufacturing company, an electronic catalog) are described on zahalka.dev.
About and contact
zcloud.cz is the brand of Martin Zahálka (Company ID 07783809, Czech Republic). Development runs as a pipeline on GitHub Projects with a team of AI agents (analyst, developer, reviewer, tester, ops); Martin owns architecture, specifications and code review — nothing ships without his sign-off.