AI agents need isolated sandboxes for PR validation

The author argues that AI agents require isolated sandboxes to safely test and validate their code changes before submitting pull requests. Various sandbox designs—ranging from lightweight faked islands and local dev setups to ephemeral containers and preview environments—offer different trade-offs between realism, safety, and speed. To make these sandboxes effective, teams must provide proper isolation, daily test-data snapshots, dev-only logins, and execution receipts. Open article →