Filter the list of block editor extensions that are available through Jetpack.
jetpack_set_available_extensions
jetpack_set_available_extensions-
filter -
action jetpack_update_core_changeTrigger a change to core update that we want to sync.
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filter jetpack_tiled_galleries_block_contentFilter the output of the Tiled Galleries content.
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filter jetpack_search_get_filtersModify the aggregation filters returned by get_filters(). Useful if you are setting custom filters outside of the supported filters (taxonomy, post_type etc.) and want to hook them up so they’re returned when you call `get_filters()`.
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filter jetpack_subscription_widget_total_subscribersFilter the total amount of subscribers
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filter jetpack_subscription_widget_is_subscribedFilter if the current user is subscribed to the blog.
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filter jetpack_subscriptions_management_urlFilter the url for folks to manage their subscriptions.
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filter jetpack_affiliate_codeAllow to filter the affiliate code.
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filter jetpack_blocks_directoryFilter to select Gutenberg blocks directory
Jetpack Developer Resources 