Celesto: A Development Platform Giving AI Agents Dedicated MicroVMs
aniketmaurya · x · 2026-08-02
Celesto is a development platform focused on providing secure, isolated compute environments for AI agents. Its core component is the open-source microVM, SmolVM, which boots in approximately 500ms, equipping agents with a full shell, filesystem, and browser.
Core Features
- Self-improving Harness: The agent's control logic runs outside the sandbox, continuously learning from each execution to improve reliability.
- Lifecycle Management: Supports pausing, resuming, snapshotting, and forking sandbox states, making it easy to run parallel tests and fan out work.
- Instant Cold Start: Cold starts take under 3 seconds without waiting for lengthy provisioning or image pulls.
- Flexible Deployment: Supports self-hosting or using the managed Celesto Cloud (paying only for active compute). Built agents can be distributed to end-users via MCP servers, Telegram, or APIs.
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