What happens if a check fails?

The agent keeps working in the sandbox to fix it. You are only shown a result once the checks pass.

Can a broken change reach my project?

No. Verification happens in an isolated clone, and for repos the checks run before any pull request is opened.

Does this slow things down?

It adds a verification step, but it replaces the slower loop of discovering breakage after the fact. You review work that already passes.

code-anything.com

Capability · Sandbox verification

Typecheck, tests and build — before you see it

Every change runs in an isolated clone of your codebase. Typecheck, tests and build all have to pass there before the result reaches you, so broken work never lands in front of you.

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isolated clone → typecheck · tests · build

What you get

Built to be trusted

Confidence comes from verification, not promises. code-anything makes every change inside an isolated clone of your codebase and runs the real checks there — typecheck, tests and build. Only results that pass are surfaced to you. If something fails, the agent iterates in the sandbox rather than handing you broken code.

ISOLATED

Runs in a clone

Verification happens in a sandbox clone, fully separate from your real project, so nothing risky touches it.

REAL CHECKS

The actual gates

Typecheck, tests and build are run for real — the same checks you would run yourself — not a shallow lint pass.

ITERATES

Fixes before handoff

If a check fails, the agent works on it in the sandbox and only surfaces a result once the gates pass.

Details

What's included

Check	What it confirms
Typecheck	Types are consistent across the change
Tests	Existing tests still pass
Build	The project compiles and bundles

The gates a change clears in the sandbox before you see it.

In practice

A real flow, end to end

The same checks you would run locally run in the sandbox first. You only review work that has already cleared them.

Terminal

$ verify --sandbox
Running checks in isolated clone…

✓ typecheck passed
✓ tests passed (128/128)
✓ build succeeded
→ Result surfaced — safe to review.

How verification protects you

Checks run in an isolated clone, so a failing or half-finished change never touches your real project.
The gates are real — typecheck, tests and build — rather than a superficial pass that misses problems.
When a check fails, the agent iterates in the sandbox instead of handing you something broken.
For connected repos, this verification happens before the pull request is opened, so reviews start from a passing baseline.

FAQ

Common questions

Typecheck, your test suite, and a full build — the same gates you would run yourself before shipping a change.

Put sandbox verification to work today.

Start free — no credit card, nothing to configure. Managed infrastructure and monitoring are included.

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