StackAI

StackAI is a San Francisco no-code platform for building, deploying, and governing custom AI agents that automate back-office work across enterprise systems like Salesforce, Slack, and Google Workspace. Founded in 2023 by MIT robotics PhDs Antoni 'Toni' Rosinol and Bernardo Aceituno out of Y Combinator's W23 batch, it grew to 100+ enterprise customers and processed over a million documents before Asana acquired it in May 2026 for a reported $75 million to anchor its 'operating system for human-agent teams.'