SANDBOX_URL
External sandbox address.
- Where
- .env
- Type
- text
- Allowed values
- URL
- Only the owner can set it
- Yes
- When to change it
- external mode
- Safe example
- <your-sandbox-url>
- If the value is wrong
- Runs fail.
Checked against the source at commit f4fd89f on 29 Oct 2026. Everything here is merged on the main branch; no release has been tagged yet. The source is private, so these pages are the public description.