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Allowlist

All Builder Projects access the following list of URLs. Ensure these are included within your application or organization's allowlist.

firestore.googleapis.com firebasestorage.googleapis.com identitytoolkit.googleapis.com *.builder.io *.builder.codes *.builder.my *.builderio.dev *.builderio.xyz *.fly.dev

Each of these URLs serves the following purpose:

DomainDescription

firestore.googleapis.com

Base URL for the Cloud Firestore API.

firebasestorage.googleapis.com

Base URL for the Firebase Cloud Storage, which serves content such as photos or videos.

identitytoolkit.googleapis.com

Base URL for Google's Identity Toolkit API.

*.builder.io

Several Builder operations routed through this URL.

*.builder.codes

Sandbox Builder operations are routed through this URL. User-generated applications run on this URL.

*.builder.my

Preview URLs utilize this domain.

*.builderio.dev

Sandbox Builder operations are routed through this URL. User-generated applications run on this URL.

*.builderio.xyz

Legacy operations use this URL. Prefer builderio.dev for new configurations. If your existing config uses the builderio.xyz URL, you don't need to make any changes.

*.fly.dev

Legacy operations used this URL. Currently in the process of being deprecated.

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