Boxd raises $2M pre-seed to give AI coding agents persistent, forkable Linux VMs

Boxd, a cloud infrastructure company building persistent, hardware-isolated Linux virtual machines for developers and AI coding agents, has raised $2 million in pre-seed funding. The round was led by BlueYard Capital, with participation from Antler, S20, Script Capital, and OVNI Capital.

What Boxd Builds

Boxd's platform provides developers and AI coding agents with their own persistent, hardware-isolated Linux virtual machines. Unlike disposable containers that lose state between sessions, Boxd machines retain their running state, allowing work to continue where it left off.

The company's core technical differentiator is live forking. Boxd can fork a running machine mid-run — processes and memory included — in a fraction of a second. This allows several agents to explore solutions in parallel without environment drift, a common problem when multiple agents or developers work from divergent or stale environments.

Platform Capabilities

Beyond persistence and live forking, Boxd's platform includes:

• Snapshots and checkpoints for capturing machine state
• Org-scoped secrets and integrations for managing credentials and connecting to external services
• Self-hosting as a deployment option

The company positions itself against disposable containers, which it characterizes as losing state and carrying a wider attack surface. Hardware isolation is central to Boxd's security posture, separating each machine at the hardware level rather than relying solely on container boundaries.

Why It Matters for AI Agents

The rise of AI coding agents has created new infrastructure demands. Agents that run for extended periods need environments that persist across sessions, and teams running multiple agents in parallel need a way to branch work without corrupting a shared environment. Live forking addresses the parallel-exploration use case directly: several agents can start from an identical machine state and pursue different approaches simultaneously.

Environment drift — where an agent or developer works against a subtly different setup than expected — is a recurring source of failed runs and hard-to-reproduce bugs. Persistent, forkable machines aim to eliminate that class of problem by making state explicit and reproducible.

The Round

• Stage: Pre-Seed
• Amount: $2,000,000 USD
• Date: September 15, 2026
• Lead investor: BlueYard Capital
• Participating investors: Antler, S20, Script Capital, OVNI Capital

The pre-seed raise gives Boxd capital to develop its platform and go to market as demand for agent-oriented infrastructure grows. The involvement of BlueYard Capital as lead, alongside a group of additional funds, signals early investor interest in the persistent-VM approach to developer and agent tooling.

Acquisition Angle

Boxd sits at the intersection of two active infrastructure categories: cloud development environments and AI agent execution. Its persistent, hardware-isolated VMs and sub-second live forking are technically differentiated from container-based sandboxes, and its self-hosting option makes it relevant to organizations with strict deployment requirements.

For acquirers in cloud infrastructure, developer tooling, or AI agent platforms, Boxd represents an early-stage asset with a focused technical thesis: that agents and developers need stateful, forkable machines rather than ephemeral containers. The company's pre-seed stage means the technology and team are early, but the category it targets — infrastructure purpose-built for AI coding agents — is one of the faster-moving areas of developer tooling.

Boxd is based at boxd.sh.