Peter Steinberger 9/6/2025

Live Coding Session: Building Arena

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This article details a live, unscripted coding session where the author builds 'Arena', a feature that analyzes compatibility between 2-4 Twitter/X users. It covers the technical pipeline (fetching tweets, profile analysis, scoring), the stack (OpenAI's codex, Claude, Inngest), and key development tactics like clean agent context, caching, and working directly on main with atomic commits.

Live Coding Session: Building Arena

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