Agent Builder Archive

HeyI built two Agent Skills last week.The first one turns rough text into polished frontend code using React and Tailwind CSS — drop in some ideas or a sketch, get back a website in seconds. The second one reads all my writing samples and generates a style guide so that anything my assistant writes next sounds just like me.Both took about 20 minutes. Just markdown files with clear instructions.Here's what a snippet of the 150 line voice-analyzer skill looks like:# Voice Analyzer SkillWhen given writing samples:1. Extract sentence patterns (length, rhythm, punctuation)2. Identify vocabulary preferences (technical vs. casual)3. Note structural habits (how paragraphs open/close)4. Output a style guide with 3-5 concrete rulesUse this guide when writing future content.They're simple. Markdown Files. No Infrastructure. No Loops. No Orchestration. Chef's kiss.And t

Welcome to the first issue of The Agent Builder — a lightweight update for the developers building agents. Editions will cover technical breakdowns, common patterns, actionable updates, and real builds. What are File Slots?Slots describe the inputs that your agent collects from a user to proceed with a task. File slots make it possible for your AI agents to collect files like expense receipts or invoice PDFs.File Slots help AI agents escape JSON to become Multipart.The core tension you may have come across: agent frameworks are JSON-first. LangChain, Semantic Kernel, even our old setup, everything flows through structured payloads. Files don't fit that model, so you rely on hacks:Base64-in-JSON: Bloats ~33%, longer transfers, memory spike on decode "Paste a link" strings: