hey everyone this is Sean

Agent harness, loop engineering, LLM Ops, eval. 𝗙𝗼𝘂𝗿 𝗔𝗜 𝗮𝗴𝗲𝗻𝘁 𝗯𝘂𝘇𝘇𝘄𝗼𝗿𝗱𝘀 𝗲𝘃𝗲𝗿𝘆𝗼𝗻𝗲 𝘂𝘀𝗲𝘀. 𝗦𝗶𝗺𝗽𝗹𝗲𝗿 𝘁𝗵𝗮𝗻 𝘆𝗼𝘂 𝘁𝗵𝗶𝗻𝗸. They went viral not because they're complicated but because they're simple building blocks, and once you see them you can prompt your way to building real systems. Here's the whole thing in one picture. An LLM is a powerful brain that knows everything about humanity and nothing about you or the software you're running. The harness is the set of tools you put on that horse so it runs where you want. Memory gives it context: who you are, what happened before, how to act. The loop lets it call tools again and again, with guardrails so it knows when to stop. Eval and LLM Ops trace every run, score it, and feed the fixes back in so the system keeps improving itself. Master these four and you can read almost any AI agent repo or paper and actually know what's going on. You Can Build Anything. You Can Learn Anything. 💪 #aiagents #llm #vibecoding #buildinpublic #founder #aitools