Live now: our Harness Engineering Track from AI Engineer World's Fair 2026. Ports, proofs, kill switches, and what is left of an agent when you remove the model. Thesis: when an agent breaks in production, the model is rarely the part that failed. - 2026 State of AI Engineering: @barrnanas, Amplify Partners - The Unreasonable Effectiveness of Separating the Task from the Model: @MaximeRivest & @isaacbmiller1, DSPy - How Anthropic Builds: @mikeyk, Anthropic - Tokens Should Have Jobs: @katelyn_lesse & @angjiang, Anthropic - Building the Production Cage for Powerful Domain Agents: Mike Chambers, AWS - Loophole: @brendanh0gan, Morgan Stanley - Every step you take, every call you make: @vdgiselle, Restate - Agent Frameworks Considered Harmful: @remilouf, .txt - We let an AI agent execute Bash and lived to talk about it: Sarah Sanders, PostHog - No Memory, No Harness: Kay Malcolm, Oracle - How we Solved Agent Building: @andrewqu, Vercel - Agents Without Code: @_philschmid, Google DeepMind - "I've never seen anything scarier than an LLM with tool calls." @headinthebox