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What I learned building an opinionated and minimal coding agent

mariozechner.at · 7,008 words · saved by 1 readers

Lessons I learned while building my own coding agent from scratch.

What I learned building an opinionated and minimal coding agent 2025-11-30 It's not much, but it's mine Table of contents pi-ai and pi-agent-core There. Are. Four. Ligh... APIs Context handoff We live in a multi-model world Structured split tool results Minimal agent scaffold pi-tui Two kinds of TUIs Retained mode UI Differential rendering pi-coding-agent Minimal system prompt Minimal toolset YOLO by default No built-in to-dos No plan mode No MCP support No background bash No sub-agents Benchmarks In summary In the past three years, I've been using LLMs for assisted coding. If you read this, y

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