Vishnu from Agent37 presents a low-cost sandbox service for running AI agents, claiming average customer spend of $0.37 per sandbox per month and the ability to offer a free tier because of aggressive infrastructure optimizations. Over 90% of new signups use the free plan. The offering targets developers who need isolated environments for agents (Hermes/OpenClaw/Claude, etc.), and the founder leans on prior experience building internal AI tooling at Amazon and Quantcast to position the product as a practical, developer-focused platform.
Cost reductions come from tailoring infrastructure to typical agent workloads: agents often require bursty CPU and lots of RAM for certain tasks but sit idle otherwise, so Agent37 manages CPU/RAM to share resources efficiently. They avoid hyperscale cloud VMs in favor of lower-cost providers like Hetzner and OVH, use gVisor to enable fast boot times and memory sharing across sandboxes (with tradeoffs such as no Docker-in-Docker or Android emulation), and choose host shapes optimized for RAM density. Full VM sandboxes are still offered for heavy workloads at a higher price. The pitch invites messaging-agent developers to try and stress the platform.
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