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Kcore

A NixOS-based hypervisor that treats VMs as declarative resources, managed via Terraform, CLI, and gRPC API, with atomic updates and rollback.

kcorehypervisor.comDeveloper ToolsMar 2026Tacconi Consulting Ltd

kcore is a NixOS-based hypervisor that treats virtual machines as declarative resources, solving the problem of managing VM infrastructure through code. It targets developers, IT, and operations teams in edge and datacenter environments, including small to large companies. It is positioned as an API-first, declarative alternative to traditional hypervisors, with features like atomic updates, rollback, and an MCP server for AI agents.

Key features

  • Atomic updates and rollback
  • Declarative infrastructure via Terraform or YAML
  • MCP server for AI agents
  • gRPC API for all operations
  • Terraform provider for VM lifecycle
  • Fast provisioning in seconds
  • Multi-node cluster support
  • Flexible storage options (local, LVM, ZFS)
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