Coding Agents & Language Evolution: Navigating Uncharted Waters • José Valim • GOTO 2025

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This presentation was recorded at GOTO Copenhagen 2025. #GOTOcon #GOTOcph https://gotocph.com José Valim - Creator of Elixir & Co-Author of "Adopting Elixir: From Concept to Production" RESOURCES https://bsky.app/profile/josevalim.bsky.social https://twitter.com/josevalim https://github.com/josevalim https://www.linkedin.com/in/josevalim https://dashbit.co Links https://tidewave.ai https://agents.md https://simonwillison.net/2025/Jun/16/the-lethal-trifecta https://xkcd.com/327 ABSTRACT As AI agents become increasingly integrated into software development, we find ourselves facing questions about how our programming languages and tools should evolve, in order to make coding agents and ourselves more productive. This talk breaks down coding agents into distinct axes (instructions, tools, and runtimes) and discusses practical solutions (AGENTS.md, runtime introspection, etc) to improve both developer and agentic experiences, whether you're using AI tools daily or building developer tooling. [...] TIMECODES 00:00 Intro 01:59 Improving coding agents 02:53 Improving agents: Instructions 08:54 Improving agents: Tools 18:15 Improving agents: Runtime 18:42 Demo 24:17 Improving agents: Runtime continued 31:31 Building integrated runtimes 36:37 Summary 37:07 Outro Download slides and read the full abstract here: https://gotocph.com/2025/sessions/3740 RECOMMENDED BOOKS Jose Valim, Chris McCord & Bruce Tate • Programming Phoenix 1.4 • https://amzn.to/3MIml6r Jose Valim Ben Marx &

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