
Restack provides a backend framework for building reliable and accurate AI agents and long-running workflows. It supports agents that operate as event-driven processes, maintaining state and continuously executing workflows. Developers can write code in Python or TypeScript using Restack libraries. Key features include long-running background workflows, API endpoints for triggering tasks, task queues with rate limiting and concurrency policies, retry policies, cron-jobs for scheduling, and frontend integration with React Flow for visual agent interfaces. Restack can be deployed on Kubernetes clusters, including Restack Cloud, on-premises, or custom cloud environments. The framework also offers a developer UI for simulating, time traveling, and replaying AI agents. The company offers Pro and Enterprise pricing tiers, with Pro costing $25 per seat per month plus compute, and Enterprise offering custom deployments and support. Restack has raised $8.5M from investors including founders and CEOs from GitHub and Puppet.

Restack provides a backend framework for building reliable and accurate AI agents and long-running workflows. It supports agents that operate as event-driven processes, maintaining state and continuously executing workflows. Developers can write code in Python or TypeScript using Restack libraries. Key features include long-running background workflows, API endpoints for triggering tasks, task queues with rate limiting and concurrency policies, retry policies, cron-jobs for scheduling, and frontend integration with React Flow for visual agent interfaces. Restack can be deployed on Kubernetes clusters, including Restack Cloud, on-premises, or custom cloud environments. The framework also offers a developer UI for simulating, time traveling, and replaying AI agents. The company offers Pro and Enterprise pricing tiers, with Pro costing $25 per seat per month plus compute, and Enterprise offering custom deployments and support. Restack has raised $8.5M from investors including founders and CEOs from GitHub and Puppet.
What they do: Open-source developer framework for building and operating AI agents and long-running workflows
Deployment: Runs on Kubernetes (Restack Cloud, on-premises, or customer cloud)
Languages: Python and TypeScript libraries
Team size: ~11 employees
Reported funding: $8.5M raised; named angels and VCs
Operationalizing AI agents and long-running, stateful workflows for product and engineering teams
Developer tools / AI infrastructure
Crunchbase lists a Seed round dated Jan 1, 2015
Crunchbase lists a non-equity assistance event dated Jun 2, 2014
“Raised $8.5M from a mix of founders, angels, and VCs; named investors include Scott Chacon, Thomas Dohmke, Matthias Hilpert, Uwe Horstmann, Luke Kanies, Jens Lapinski, Philipp Moehring, and Krishna Visvanathan”