Observed arrival · 2026-09-04
Code Zero, the autonomous engineer with a read-only default
An open-source tool that reviews pull requests, reproduces problems, proposes fixes, and verifies them against a repository's own checks.
Field notes
The page describes a staged pull-request workflow: reproduce the issue, make or propose a change, and run the repository’s checks before allowing a fix forward. Its example records a null-dereference reproduction, 14 passing tests, two findings, and zero writes in observe mode. The runtime is presented as Apache-2.0 software for self-hosting, while the paid Team tier adds hosted sandbox leases, quotas, organization-wide policy, audit logs, and 90-day run retention.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue