Lobstack is a free desktop app for Windows, macOS, and Linux that runs AI agents locally and requires user approval before any action is executed. It connects to tools like GitHub, Slack, Notion, and Linear, and supports models from Anthropic, OpenAI, Google, and xAI. Agents can draft emails, schedule meetings, manage documents, reconcile finances, and handle support tickets, all while keeping workspace data stored on the user's own computer. Lobstack also offers an API platform and a unified ledger for tracking token usage, costs, and per-client spend caps.