Shopify open-sources Roast for AI workflows

Roast’s core idea is pragmatic: treat AI like one step in an engineering pipeline, not the pipeline itself.

• –The Shopify announcement frames non-determinism as the main reliability problem and uses workflow structure to contain it.
• –Roast combines prompt steps with commands/code, so teams can interleave LLM reasoning with deterministic checks and transformations.
• –The GitHub project emphasizes reusable workflow “cogs,” local agent execution, and orchestration patterns that feel closer to CI/CD than chat UX.
• –Early open-source traction is strong for a niche devtool (1.1k+ GitHub stars), and active releases through `v1.0.2` (March 2, 2026) suggest continued investment.
• –The tradeoff: Roast is Ruby-first, so non-Ruby teams may treat it as a design reference more than a drop-in standard.