Sandboxes
Check sandbox name availability
Check whether the sandbox slug is valid and available.
GET
Check sandbox name availability
Authorizations
Personal access token (msb_pat_…) or session JWT - the credential an agent acts with on a user's behalf.
Path Parameters
Organization slug
Query Parameters
Candidate slug to validate + check. Named sandbox_slug in the query to
disambiguate from the org :slug route param.
Response
Slug validity + availability
Whether a candidate slug is well-formed and currently unused. valid is
the format check; available is the global-uniqueness check (only meaningful
when valid). reason explains an invalid format. Lets the create form
guide the user before the sandbox is created.