fh add

fabric-harness add [connector] [--print]

fh add lists or prints implementation recipes for sandbox/runtime connectors (Daytona, E2B, Modal, Kubernetes, Firecracker/microVM, etc.). It's a starting-point scaffold, not a full installer — it prints code you copy into a new file under .fabricharness/sandboxes/.

Examples

List available recipes

fh add

Print a connector recipe

fh add daytona --print
fh add e2b --print

The output is a complete TypeScript file demonstrating the RemoteSandboxApi adapter pattern. Modify it for your provider's auth and lifecycle needs.

See also

• Sandboxes
• Capability matrix — which connectors are first-class today.