The map shows how my fields of work connect: whoever runs Nextcloud quickly meets SAML, S3 and Linux; whoever works with RAG ends up at LLMs and agents. Every dot leads to a project, a blog topic or a free tool.
~/graph / skill-graph
Skill graph
Click a dot: it lights up everything connected to it — projects, blog topics and tools.
SkillProjectBlog topicTool
Pick a dot.
Tap or click to explore · dots can be dragged
List view
- Nextcloud (Skill) — My daily field: managed Nextcloud with about 15,000 instances in 2nd/3rd-level support.
- HiDrive (Skill) — Sync & share for about 150,000 users: analysing failure patterns and client logs.
- S3 Object Storage (Skill) — Object storage: multipart uploads, lifecycle rules, backend incidents.
- SAML / OIDC (Skill) — Single sign-on: redirect loops, clock skew, UID mapping.
- Microsoft 365 (Skill)
- Linux (Skill) — Operations and troubleshooting: services, logs, disk, access.
- systemd (Skill)
- Bash (Skill)
- Docker (Skill)
- Python (Skill) — Automation, analysis and AI tooling.
- FastAPI (Skill)
- n8n (Skill)
- DNS (Skill) — Moves, TTL, caching, delegation.
- SPF · DKIM · DMARC (Skill) — Mail authentication: alignment, reading headers, rolling it out properly.
- TLS (Skill)
- LLM (Skill) — Language models in my own tools, local and via API.
- RAG (Skill) — Answers with citations over your own documents, hybrid search.
- AI Agents (Skill) — Agents with tools, guardrails and approvals.
- Root-Cause-Analyse (Skill) — The cause rarely sits where the symptom shows.
- 2nd/3rd-Level-Support (Skill) — When it gets complicated: escalations, incidents, documentation.
- J.A.R.V.I.S. (Project) — Personal AI assistant for macOS with 120+ tools Project →
- LLM-Wiki (Project) — RAG knowledge system: chat with your own documents, with citations Project →
- job-hunter (Project) — Self-hosted assistant for job searching in the German market Project →
- zimage-turbo-pipeline (Project) — Fully automatic pipeline from a news topic to a finished short video Project →
- ACE Studio (Project) — Native macOS app for local AI music production with ACE-Step Project →
- FamigliaOS (Project) — The digital home: family organisation, self-hosted and Nextcloud-first Project →
- DNS, mail & certificates (Blog topic) — DNS moves, TTL, SPF/DKIM/DMARC, PTR and TLS certificates: checks and typical mistakes from hosting support. Blog topic →
- SPF checker (Tool) — Counts the DNS lookups of your SPF record (limit: 10). Tool →
- DNS TTL planner (Tool) — Plans the TTL reduction and the move time. Tool →
- Cron explainer (Tool) — Explains cron expressions and shows the next runs. Tool →