https://kamilkaletka.dev/en/blog Articles on AI, full-stack and automation. en Fri, 05 Jun 2026 00:00:00 GMT https://kamilkaletka.dev/en/blog/pi-hole-dns-warstwa-filtrujaca Browser adblock leaves the TV and phone exposed. DNS-level filtering covers every device. Showing my Pi-hole + AdGuard upstream setup. Fri, 05 Jun 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/pi-hole-dns-warstwa-filtrujaca self-hostednetworkingprivacyhomelab https://kamilkaletka.dev/en/blog/telegram-bot-pilot-do-agenta Telegram is my main interface to Claude Code when I'm away from the terminal. Showing how I set up the bot, secured it against prompt injection, and how it talks to the agent. Wed, 03 Jun 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/telegram-bot-pilot-do-agenta claude-codetelegramautomationself-hosted https://kamilkaletka.dev/en/blog/prompt-caching-jak-licze-koszty Opus 4.7 looks expensive. Five minutes of prompt caching cuts cost by 90%. Showing how it works, how to measure, and which cadence patterns actually move the bill. Mon, 01 Jun 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/prompt-caching-jak-licze-koszty claude-codeopuseconomicsadvanced https://kamilkaletka.dev/en/blog/memory-w-claude-code-co-pamieta Memory is a Claude Code mechanism that persists facts about you, the project and preferences across sessions. Showing how it works under the hood, when to use it, and when CLAUDE.md is better. Sat, 30 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/memory-w-claude-code-co-pamieta claude-codememoryadvancedproductivity https://kamilkaletka.dev/en/blog/n8n-vs-skrypt-bash-kiedy-co n8n is great for orchestration, but often bash + cron does the same faster and cheaper. Here's the rule I use and three examples of each from my setup. Thu, 28 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/n8n-vs-skrypt-bash-kiedy-co automationn8ndevopstools https://kamilkaletka.dev/en/blog/obsidian-couchdb-livesync-jak-notion Notion was comfortable, but data on someone else's server and a format lock-in. Obsidian + CouchDB livesync gives the same, locally, with markdown on disk. Showing the setup. Tue, 26 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/obsidian-couchdb-livesync-jak-notion toolsself-hostedobsidianproductivity https://kamilkaletka.dev/en/blog/pisanie-wlasnych-skilli-claude-code A skill is a small markdown file that adds a slash command with dedicated logic to Claude Code. Showing how to write one from scratch, where to put it, and which mistakes to avoid. Sun, 24 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/pisanie-wlasnych-skilli-claude-code claude-codeskillsautomationtutorial https://kamilkaletka.dev/en/blog/cloudflare-tunnel-zero-trust-homelab I have 4 machines, dozens of services and zero ports open to the internet. All access goes through Cloudflare Tunnel with Zero Trust auth. Showing how I set it up and what's worth knowing. Fri, 22 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/cloudflare-tunnel-zero-trust-homelab self-hostednetworkingcloudflaresecurity https://kamilkaletka.dev/en/blog/vikunja-task-tracker-z-agentami Trello was comfortable but my data lived on someone else's server. Vikunja is a local alternative, plus MCP. Showing how I wired it into Claude Code and what actually changed in my workflow. Wed, 20 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/vikunja-task-tracker-z-agentami toolsself-hostedMCPproductivity https://kamilkaletka.dev/en/blog/background-agents-ralph-loop-kiedy-warto Background agents and Ralph-style loops are powerful, but easy to turn into a token furnace. Showing my three real cases and the rule for when to even turn this on. Mon, 18 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/background-agents-ralph-loop-kiedy-warto claude-codeagentsautomation https://kamilkaletka.dev/en/blog/mcp-serwery-ktore-realnie-uzywam I have 12 MCP servers wired in — Home Assistant, Proxmox, Cloudflare, Vikunja, Gmail, Calendar, n8n. Showing which actually pay off and which sat unused until I unhooked them. Sat, 16 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/mcp-serwery-ktore-realnie-uzywam MCPclaude-codeintegrationshomelab https://kamilkaletka.dev/en/blog/plan-mode-claude-code-best-practices Plan mode shipped recently and already changed my workflow. When I use it, when it slows me down, and what questions to ask so the plan is actually useful. Thu, 14 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/plan-mode-claude-code-best-practices claude-codeplan-modemethodology https://kamilkaletka.dev/en/blog/claudeclaw-cron-claude-z-grafikiem Claude Code can work even when I'm not driving. claudeclaw is the mechanism that schedules tasks for it — daily briefings, PR reviews, dependency audits. Showing how it works on my setup. Tue, 12 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/claudeclaw-cron-claude-z-grafikiem claude-codecronautomationself-hosted https://kamilkaletka.dev/en/blog/ai-image-generation-2026-gemini-flux-sdxl Four models, three price points, one case study (cover image for the blog). Showing what works for which use case, where the API hurts, and when it pays to go back to Sharp + Canvas. Mon, 11 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/ai-image-generation-2026-gemini-flux-sdxl AItoolsimage-generationproductivity https://kamilkaletka.dev/en/blog/cookie-consent-rodo-male-firmy-2026 Cookiebot is 99 EUR/mo, Iubenda 27 EUR. For an agritourism, salon or one-person company that's absurd. Showing free / DIY setups that pass the regulator's audit. Mon, 11 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/cookie-consent-rodo-male-firmy-2026 web-designGDPRsmall-businesscompliance https://kamilkaletka.dev/en/blog/restic-backup-homelab-co-uzywam After two years with various solutions (Borg, Duplicati, hand rsync) I landed on Restic + B2. Full setup with systemd timer, encryption, retention policy and Telegram alerts. Mon, 11 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/restic-backup-homelab-co-uzywam homelabdevopsself-hostedbackup https://kamilkaletka.dev/en/blog/schema-org-male-firmy-local-seo-ktory-dziala For agritourism, salon, clinic: copy-paste JSON-LD plus what bonuses Google gives (rich results, knowledge panel, maps). Showing 4 schema types I drop in for clients and measurable effects. Mon, 11 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/schema-org-male-firmy-local-seo-ktory-dziala web-designSEOsmall-businesslocal-business https://kamilkaletka.dev/en/blog/stripe-blik-przelewy24-male-firmy Online payments setup for an agritourism, honey shop, course — from account to first webhook. Concrete walls that hit you (BLIK on Stripe, VAT invoices, data retention), with doc links. Mon, 11 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/stripe-blik-przelewy24-male-firmy paymentse-commercesmall-businesstutorial https://kamilkaletka.dev/en/blog/hooks-w-claude-code-dyscyplina Hooks are a small piece of config that turns Claude Code into a tool with real guardrails. Showing my setups: blocking destructive commands, enforcing commit policy, telemetry to Telegram. Sun, 10 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/hooks-w-claude-code-dyscyplina claude-codehooksautomationdevops https://kamilkaletka.dev/en/blog/ile-kosztuje-strona-dla-agroturystyki-2026 Real rates for an agritourism, guesthouse or farm stay website: 2,990 PLN to 7,990 PLN + care plan. Showing what each tier gets you and what to avoid. Sun, 10 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/ile-kosztuje-strona-dla-agroturystyki-2026 web-designagritourismpricingsmall-business https://kamilkaletka.dev/en/blog/claude-opus-4-7-pierwsze-wrazenia Opus 4.7 ships with a million token context, plan mode and a fast toggle. I switched from Sonnet 4.6 as my default — here's what changed, where it pays off, and where I stick with the cheaper model. Fri, 08 May 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/claude-opus-4-7-pierwsze-wrazenia AIclaude-codeopusreview https://kamilkaletka.dev/en/blog/claude-code-skille-warto-znac Skills ate slash commands, the plugin marketplace has 1,234 entries, official Anthropic skills are doing design work, and ToxicSkills found prompt injection in over a third of them. Practical ecosystem map: what to install, what to scan, what to delete. Mon, 27 Apr 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/claude-code-skille-warto-znac AIclaude-codeskillsproductivitysecurity https://kamilkaletka.dev/en/blog/mcp-w-2026-przeglad-rynku A year ago Model Context Protocol was supposed to change everything. Today it's a standard, but the ecosystem has 20k servers, 92% exploitation odds at 10 plugins, and context bloat eating 70% of the window. Market overview, top 15, and 2026 trends. Sun, 26 Apr 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/mcp-w-2026-przeglad-rynku AIMCPclaude-codesecurity https://kamilkaletka.dev/en/blog/jak-claude-code-zmienil-moj-workflow A concrete tour of how an AI agent works on my server: from Telegram through Home Assistant to deploying sites. What works, what doesn't, and how to set it up. Sat, 25 Apr 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/jak-claude-code-zmienil-moj-workflow AIautomationclaude-codeself-hosted https://kamilkaletka.dev/en/blog/spec-driven-development-claude-code A five-stage process for planning a feature before the first line of code. Fewer iterations, fewer bugs, less refactoring. Concrete example: the very blog you're reading. Sat, 25 Apr 2026 00:00:00 GMT kamilkaletka8@gmail.com (Kamil Kaletka) https://kamilkaletka.dev/en/blog/spec-driven-development-claude-code AIclaude-codemethodologyproductivity