gpp_popup_title
Filter the popup’s human-readable title. This value is used as the popup dialog’s accessible name (aria-label), the iframe element’s title attribute, and the iframe document’s
gpb_ics_calendar_props
Filter the ICS calendar properties for a feed. The filter tag includes the feed type as a modifier, so you can hook into all feeds via `gpb_ics_calendar_props` or a specific feed type via `gpb_ics_calendar_props_service`, `gpb_ics_calendar_props_resource`, etc.
gspc_attachment_picker_threshold
Filter the per-group item count above which a group switches from eager client-side loading to async server-side search.
gpcp_csv_field_label
Filter the label for a given field ID.
gca_token_health_cache_ttl
Filter the lifetime, in seconds, of the cached Airtable token-health result. Return 0 or less to disable caching.
gpb_google_calendar_event_block_data
Filter the availability block data generated from a Google Calendar event.
gpb_availability_block_added
Fires after an availability block is added. Useful for integrations (e.g. syncing a negative/unavailability block to a calendar).
gpb_availability_blocks
Filter the availability blocks for a bookable. Allows virtual blocks to be injected at read time without persisting them to the database.
gpb_bookable_name
Filter the display name of a service or resource by ID.
gpep_token_param_name
Filter to customize the query parameter name used for Easy Passthrough tokens.
By default, the query parameter is ep_token. Use this filter to change the parameter name.
gpacl_use_visitor_timezone
Use the visitor’s browser timezone instead of the server timezone for date/time conditional logic.
gpacl_date_require_date_selection
Whether an empty date field should be treated as “no match” (require date selection).
gpac_is_applicable_form
Filter whether GPAC’s frontend script should be loaded for a form that has no native calculation fields. This allows other plugins (e.g. GP Advanced Conditional Logic) to signal that they need GPAC’s formula processing pipeline on the frontend.
gfdt_grant_confirmation_preview_permission
Filter whether user should be granted permission to preview confirmation pages.
gpb_event_settings_fields
Filters the list of optional event settings fields shown in the Google Calendar connection UI. Return an array of field keys to enable. Currently supported: – ‘event_description’ – Show the Event Description textarea.