1. Add the "NCL File Sharer - Generate sharable url" action to your workflow. 2. Set "Bubble File URL" to the file you want to share (or use "List of files?" + "List of Bubble File URLs" for multiple files).
3. Set "Bubble API Key" to your app's API token (e.g. from a data type like child_setting).
4. The action returns signed URL(s) that can be used to access private files.

"Sign URLs in JSON" action:
1. Pass a raw JSON text (object or array) in "JSON text". Every string property named "url" whose host is allowlisted (whitelisted_domains / Allowed hosts + cdn.bubble.io) is replaced with a signed URL in one call. Values that are empty or "no image" are left untouched.
2. Duplicate URLs are signed once. If any URL fails validation or signing, the action fails as a whole (returned_error = yes) and no partial JSON is returned.
3. The returned "signed JSON text" is valid raw JSON (U+2028/U+2029/U+0085 escaped) that can be embedded directly into an API Connector body.

Plugin Settings:
- whitelisted_domains: Comma-separated list of allowed domains (optional, leave empty to allow all).
- api_key: Fallback API key used only if no key is passed via the workflow parameter.