Tessl

Coding Agents Don't Scale Themselves. Neither Do Your Teams. — Patrick Debois, Tessl

Aug 22, 2026 · 22:06

Patrick Debois of Tessl argues that the 'dark factory' of autonomous coding agents won't work in most organizations because teams and platforms aren't set up for it, not because the technology fails. Developers who rebelled at 'writing better prompts' re-engaged once tooling opened a technical path; skeptics are ideal for context authoring, and retros target repeated agent failures, not code. Planning splits into well-scoped agent tasks and conversational human work; Debois tracks two metrics: human touches per result (down) and shared fixes that help everyone, not one 10x person. Platform teams must own paved roads, registries, eval systems, and spend visibility; that's the shift from solo developer to multiplayer system, and hiring tests AI leverage, engineering taste, and collaboration.

Context Is the New Code — Patrick Debois, Tessl

May 3, 2026 · 27:14

Patrick Debois argues that as AI coding agents become more capable, context—prompts, rules, and memory—needs its own engineering discipline, introducing the Context Development Lifecycle: Generate, Evaluate, Distribute, and Observe. He explains how to create reusable prompts like agent MD and pull documentation via MCP, test context using evals with LLM-as-judge and sandboxed execution, package context as skills with registries and dependency management, and observe through agent logs, PR feedback, and production failures to feed improvements back into context. He also notes that context requires its own CI/CD with error budgets due to non-determinism, and highlights the need for context filters and security scanning. The talk draws parallels to DevOps and positions Tessl as a platform implementing these practices.