Tangent is an autonomous ML research agent built on Tangle, an open-source cross-cloud ML pipeline orchestrator (available on HuggingFace). Unlike hyperparameter search tools, Tangent automates the full iterative research cycle: given a goal — reproduce a result, fine-tune a model, push a metric — it designs a Tangle pipeline, selects components and hyperparameters, launches runs on CPU or GPU clusters, diagnoses its own failures, and iterates, with or without a human in the loop. Findings are captured in a persistent learnings corpus so each experiment builds on the last. In production use at Shopify, Tangent has reduced ML experiment cycles from ~3-7 days to ~1 day. We will demo Tangent live: starting from a research prompt, watching the agent build and submit a pipeline to a real compute cluster, and discussing results as they arrive.