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Create a bucket from the Object Storage section of the CoreWeave Cloud Console, or by using any S3-compatible client (aws s3 mb, mc mb, and so on) configured against https://cwobject.com. Access controls work in two layers: organization-level Object Storage policies are required and control who can use the API, and bucket policies are optional and control which buckets they can act on. Bucket policies that use a wildcard Principal must include a cw:PrincipalOrgID condition to keep the bucket scoped to your organization. For full details, see Create a bucket and Object Storage policies.
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Last modified on June 18, 2026