Collaborative cloud coding
for teams and agents.
Fast, shareable sandboxes and programmable workflows that plug into GitHub. Spin up an environment, run your stack, and share the exact state with your team—or your agents.
Absolute isolation. Instant execution.
Operate untrusted code or complex AI workflows without jeopardizing your local machine. Every Smithers workspace boots an ephemeral, highly optimized Sandbox in under 1 second.
Hardware Virtualization
True micro-VM boundaries. No leaky containers-in-containers weirdness. Safely run Docker, systemd, or arbitrary executables.
Zero Idle Drain
You're strictly billed for active runtime milliseconds. Sandboxes sleep instantly when processes finish. Pool credits across your workspace seamlessly.
AI-Native Surfaces
View any state difference, log matrix, or directory tree instantly. Pre-formatted "Copy for LLM" buttons make pasting context into agents flawless.
Say goodbye to
YAML sprawl.
Define your checks, environments, and agents using Turing-complete code. Workflows run natively in your sandboxes with explicit dependency trees. No more pushing 20 adjacent commits named "testing github actions."
- ✓ TypeScript orchestration natively supported
- ✓ Test pipelines locally before ever pushing
- ✓ Type-safe secrets injection
export default async function run(stack) {
await stack.lint();
// Trigger agent review on change
const review = await Agents.Review({
model: 'claude-3-5-sonnet'
});
if (review.status === 'reject') {
throw new Error(review.comment);
}
}
Update user authentication logic #42 Your repo stays
exactly where it is.
We don't ask you to migrate issues, wikis, or source control. Smithers installs securely as a GitHub App with explicitly scoped, read/write permissions limited only to Pull Requests and Commit Statuses.
We do the heavy orchestration lifting within our isolated cloud layer and map the results cleanly back to GitHub checks. We never ask for admin tokens.
Stop waiting on reviews. Ship in stacks.
Managing massive PRs stalls team momentum. Smithers integrates flawlessly with Jujutsu (jj) natively beneath the hood, allowing your team to break enormous features into tiny, linked commits and land them sequentially—without fighting git rebase demons.
One-Command Submissions
Turn local `jj` stacks into discrete GitHub PR chains automatically. Re-syncing the entire stack up or down automatically resolves merge conflicts for mid-stack rebases.
Bottom-Up Landings
Smithers guarantees structural safety. When stack dependencies pass their respective isolated workflows, Smithers lands them recursively in order.
Predictable pricing for teams of any size.
Only pay for active sandbox compute and seats. We publish exact usage rates transparently. No hiding behind "Contact Sales" forms for basic access.