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Field notes

Long-form engineering notes on Claude, MCP, RAG, AI product design, and Swiss freelance practice. Written from production work, not theory.

3posts
May 18, 2026·ai·8 min read

Why I built Claude Daily: one hour a morning down to five minutes

I used to spend an hour every morning trying to keep up with the Claude ecosystem. So I built claude.mazzotta.dev. A three-model pipeline, fifteen sources, one page. Here is how it works and why it is free.

ClaudeAnthropicAI EngineeringIndie HackerNext.jsWealthior Labs
May 4, 2026·ai·10 min read

Claude vs OpenAI: when to pick which, by someone who ships both

Skip the leaderboard. The real decision is shaped by data residency, context length, tool-use semantics, ecosystem, and team familiarity. A practitioner's decision tree from a Senior AI Engineer who has shipped both Claude and OpenAI in production for Swiss clients.

ClaudeOpenAIAnthropicLLMDecision GuideProduction AI
Apr 22, 2026·engineering·12 min read

Building custom MCP servers in TypeScript that survive production

Most MCP server tutorials stop at the echo example. This is what changes between an MCP server you demo on a stream and one that an enterprise customer puts in front of Claude Code with real data. Tooling, auth, observability, the parts that bite later.

MCPModel Context ProtocolClaudeAnthropicTypeScriptProduction