TechFabricTechFabricHarness
EcosystemSandboxes

exe.dev

Adapt exe.dev machines to the Fabric shell and filesystem operations, so a session gets a persistent machine rather than a container.

Community blueprint — no shipped adapter. TechFabric Harness does not ship or certify an adapter for exe.dev, and nothing here is covered by the conformance suites. fh add exedev scaffolds a project-owned adapter that you implement and validate yourself with validateSandboxAdapter(). See the target matrix for what is shipped.

Run fh add exedev. The versioned recipe creates a managed remoteSandboxEnv() adapter and test; implement the current machine API mapping for cwd, environment allowlists, abort, timeout, binary files, cleanup, and reconnection behavior.

Never serialize SSH keys or machine tokens into model context, history, or portable refs. Validate the adapter structurally and live.

E2B sandbox adapter

Adapt an E2B sandbox to the Fabric shell and filesystem operations, which is the fastest path to running untrusted code.

islo

Build an islo adapter against the portable Fabric sandbox contract, and what the contract requires before an agent can use it.