Custom AI Applications
Full-stack apps powered by Claude, Codex, and agentic workflows — from idea to production without the agency overhead.
AI · Automation · Product Builder
Hi, I'm Nils — I create custom AI apps, n8n workflows, iOS apps.
150+
Production workflows
40+
Business clients
4
Shipped products
100%
Solo-built
“Communication was excellent, clear, responsive, and solution-oriented. Highly recommended.”— Pierre Verstr · Fiverr
What I do
AI apps, n8n systems, shipped products — each lane runs end-to-end, solo, in production.
Full-stack apps powered by Claude, Codex, and agentic workflows — from idea to production without the agency overhead.
Battle-tested automations plus custom community nodes like ProDex — the first Codex integration built for n8n.
I don't just automate — I ship. ProDex, InstaMap, workflow templates on Ko-fi, and an iOS companion app in active development.
Integrations
Stack & APIs
APIs, platforms, and tools wired into real client workflows — and many more.
Selected work
From ProDex — the first Codex node for n8n — to InstaMap and production workflow templates. Real systems running in the wild.
Codex inside n8n — a community first
The first custom n8n community node that brings OpenAI Codex directly into your workflows. Run code generation, repo-aware tasks, and agentic dev loops without leaving n8n — built for the community, updated in public.

Creator intelligence that inspires growth
Turn any public Instagram profile into actionable decisions — what worked, why it worked, and what to post next. Profile scans, hook patterns, format mix analysis, ideal account comparison, and a 12-week growth roadmap.

Production-ready templates for creators & teams
Curated n8n workflows you can deploy today — lead nurturing, CRM sync, social scheduling, e-commerce automation, and more. Each workflow ships with documentation.
Lead Nurture Flow
n8n template
CRM · Marketing
CRM Sync Pipeline
n8n template
Sales ops
Social Scheduler
n8n template
Content
Inventory Alert
n8n template
E-commerce
2026 releases
I publish new n8n workflows and build updates in r/n8nPro. Below are this year's drops — not legacy templates.
End-to-end workflow that generates viral anime-style ASMR cooking videos — AI ideas, storyboard images, Seedance video gen, and auto-post to Instagram Reels. ~$0.22 per video.
$0/month Instagram comment system — AI intent classification, autopilot or human-in-loop replies, sentiment analytics dashboard, and real-time Meta webhook monitoring.
Schedule Instagram posts through natural language chat. GPT-4.1 agent, media URL validation, session memory, analytics — plus a hosted frontend at social.buysellflows.com.
Production clients
Developed an AI Readiness audit system for WebsiteMedic's Webo platform, helping businesses understand how well their homepage is structured for AI search engines. Designed the backend AI workflow, scoring logic, and structured response system to generate clear, actionable recommendations around business clarity, site structure, and trust signals.
Visibility check → optimization roadmap
Automated the full lead search, enrichment, and outreach pipeline — a direct competitor to Clay. End-to-end prospecting that runs without manual handoffs between tools.
$10/lead → $5/lead vs Clay
Built a WhatsApp AI assistant for a real-estate team — tracks calls, leads, and funnel stages, then syncs everything to a centralized dashboard. Auto-generates call notes and labels leads with summaries in organized folders tailored to the company's pipeline.
Calls + leads tracked automatically
Active n8n workflow creator and mentor for users in Simon's SKOOL community — building automations, answering workflow questions, and helping members ship production systems.
Community workflows & mentorship
Users enter their LinkedIn profile link and the n8n workflow builds and deploys a premium, professional-looking portfolio website — no manual design or hosting setup.
Link in → live site deployed
Pierre had dozens of pending Notion tasks, each needing a different perspective and agent profile. Built a dynamic agent system that adapts to any task auto-picked from Notion, completes it, and marks it done.
“I'm very glad I chose to work with Nils. Communication throughout the project was excellent, clear, responsive, and solution-oriented. Nils is highly attentive to detail, genuinely committed to doing things well, and always quick to take action when needed. He clearly cares about the quality of his work and the success of the project. A great experience from start to finish. Highly recommended.”
Multi-agent task automation
Built an AI co-founder agent that understood and replicated Kurt's posting behavior — auto-posting and responding to comments for consistent, active Twitter engagement.
24/7 Twitter presence
Kurt runs a company as CEO with a packed schedule — post-meeting follow-ups kept slipping. Automation collects Google Meet/Zoom transcripts, creates dedicated tasks for employees, assigns them, and tracks progress in Notion.
Transcripts → assigned tasks
// Get in touch
AI apps, n8n automations, or product partnerships. One path in — form below or direct email.
You reach out
Share scope, timeline, and tools in the form or email.
Scoping call
We align on architecture, integrations, and deliverables.
Build & ship
Production workflows with docs — not a demo that breaks Friday.