# Emerging Travel Group API > Documentation for the Emerging Travel Group (ETG) API — hotel inventory search, booking, and post-booking management across the B2B, Affiliate, Content, and Midoffice surfaces. ## Guides - [Overview](https://docs.emergingtravel.com/docs/overview/) - [Glossary](https://docs.emergingtravel.com/docs/glossary/) - [Integration Guide](https://docs.emergingtravel.com/docs/integration-guide/) - [Best Practices for API](https://docs.emergingtravel.com/docs/best-practices-for-apiv3/) - [Certification and Production access](https://docs.emergingtravel.com/docs/certification/) - [API support recommendations](https://docs.emergingtravel.com/docs/api-support-recommendations/) ## Fundamentals Get to know the ETG API basics — authorization, requests, responses, errors, security features, and the sandbox environment. - [Authorization](https://docs.emergingtravel.com/docs/fundamentals/authorization/) - [Requests](https://docs.emergingtravel.com/docs/fundamentals/requests/) - [Responses](https://docs.emergingtravel.com/docs/fundamentals/responses/) - [Errors](https://docs.emergingtravel.com/docs/fundamentals/errors/) - [Security features](https://docs.emergingtravel.com/docs/fundamentals/security-features/) - [Sandbox](https://docs.emergingtravel.com/docs/fundamentals/sandbox/) ## How-tos Practical guides for working with dumps and specific field structures. - [Metapolicy_struct](https://docs.emergingtravel.com/docs/how-tos/process-fields/metapolicy-struct/) - [Retrieve dump](https://docs.emergingtravel.com/docs/how-tos/process-dump/retrieve-dump/) - [Full field metapolicy_struct](https://docs.emergingtravel.com/docs/how-tos/process-fields/full-metapolicy-struct/) - [Download dump](https://docs.emergingtravel.com/docs/how-tos/process-dump/download-dump/) - [Upsells](https://docs.emergingtravel.com/docs/how-tos/process-fields/upsells/) - [Decompress dump](https://docs.emergingtravel.com/docs/how-tos/process-dump/decompress-dump/) - [Sell_price_limits](https://docs.emergingtravel.com/docs/how-tos/process-fields/sell_price_limits/) - [Read dump](https://docs.emergingtravel.com/docs/how-tos/process-dump/read-dump/) ## Content API Find, filter, and access detailed hotel information. Access on request. - [Retrieve filter values](https://docs.emergingtravel.com/docs/content-api/retrieve-filter-values/) - [Retrieve hotel IDs by filter](https://docs.emergingtravel.com/docs/content-api/retrieve-hotel-ids-by-filter/) - [Retrieve hotels content by IDs](https://docs.emergingtravel.com/docs/content-api/retrieve-hotels-content-by-ids/) - [Retrieve hotels review by IDs](https://docs.emergingtravel.com/docs/content-api/retrieve-hotels-review-by-ids/) ## B2B API API calls with special low rates that are not available in open sources. - [Retrieve contract](https://docs.emergingtravel.com/docs/b2b-api/contracts/retrieve-contract/) - [Search by hotel IDs](https://docs.emergingtravel.com/docs/b2b-api/hotel-search/search-by-hotel-ids/) - [Create booking process](https://docs.emergingtravel.com/docs/b2b-api/booking/create-booking-process/) - [Retrieve bookings](https://docs.emergingtravel.com/docs/b2b-api/post-booking/retrieve-bookings/) - [Retrieve closing documents](https://docs.emergingtravel.com/docs/b2b-api/documents/retrieve-closing-documents/) - [Retrieve hotel dump](https://docs.emergingtravel.com/docs/b2b-api/static-content/retrieve-hotel-dump/) - [Retrieve order groups](https://docs.emergingtravel.com/docs/b2b-api/order-groups/retrieve-order-groups/) - [Retrieve profiles](https://docs.emergingtravel.com/docs/b2b-api/profiles/retrieve-profiles/) - [Retrieve financial details](https://docs.emergingtravel.com/docs/b2b-api/contracts/retrieve-financial-details/) - [Search by geo coordinates](https://docs.emergingtravel.com/docs/b2b-api/hotel-search/search-by-geo-coordinates/) - [Cancel booking](https://docs.emergingtravel.com/docs/b2b-api/post-booking/cancel-booking/) - [Create credit card token](https://docs.emergingtravel.com/docs/b2b-api/booking/create-credit-card-token/) - [Create order group](https://docs.emergingtravel.com/docs/b2b-api/order-groups/create-order-group/) - [Create profile](https://docs.emergingtravel.com/docs/b2b-api/profiles/create-profile/) - [Retrieve closing documents info](https://docs.emergingtravel.com/docs/b2b-api/documents/retrieve-closing-documents-info/) - [Retrieve hotel custom dump](https://docs.emergingtravel.com/docs/b2b-api/static-content/retrieve-hotel-custom-dump/) - [Search by region](https://docs.emergingtravel.com/docs/b2b-api/hotel-search/search-by-region/) - [Add to order group](https://docs.emergingtravel.com/docs/b2b-api/order-groups/add-to-order-group/) - [Edit profile](https://docs.emergingtravel.com/docs/b2b-api/profiles/edit-profile/) - [Retrieve hotel incremental dump](https://docs.emergingtravel.com/docs/b2b-api/static-content/retrieve-hotel-incremental-dump/) - [Retrieve voucher](https://docs.emergingtravel.com/docs/b2b-api/documents/retrieve-voucher/) - [Start booking process](https://docs.emergingtravel.com/docs/b2b-api/booking/start-booking-process/) - [Sort hotels](https://docs.emergingtravel.com/docs/b2b-api/hotel-search/sort-hotels/) - [Check booking process](https://docs.emergingtravel.com/docs/b2b-api/booking/check-booking-process/) - [Disable profile](https://docs.emergingtravel.com/docs/b2b-api/profiles/disable-profile/) - [Retrieve hotel reviews’ dump](https://docs.emergingtravel.com/docs/b2b-api/static-content/retrieve-hotel-reviews-dump/) - [Retrieve invoice info](https://docs.emergingtravel.com/docs/b2b-api/documents/retrieve-invoice-info/) - [Remove order group](https://docs.emergingtravel.com/docs/b2b-api/order-groups/remove-from-order-group/) - [Suggest hotel and region](https://docs.emergingtravel.com/docs/b2b-api/hotel-search/suggest-hotel-and-region/) - [Disband order group](https://docs.emergingtravel.com/docs/b2b-api/order-groups/disband-order-group/) - [Receive booking status webhook](https://docs.emergingtravel.com/docs/b2b-api/booking/receive-booking-status-webhook/) - [Restore profile](https://docs.emergingtravel.com/docs/b2b-api/profiles/restore-profile/) - [Retrieve invoice](https://docs.emergingtravel.com/docs/b2b-api/documents/retrieve-invoice/) - [Retrieve regions’ dump](https://docs.emergingtravel.com/docs/b2b-api/static-content/retrieve-regions-dump/) - [Retrieve hotelpage](https://docs.emergingtravel.com/docs/b2b-api/hotel-search/retrieve-hotelpage/) - [Delete profile](https://docs.emergingtravel.com/docs/b2b-api/profiles/delete-profile/) - [Make order group overpay](https://docs.emergingtravel.com/docs/b2b-api/order-groups/make-order-group-overpay/) - [Retrieve hotel reviews’ incremental dump](https://docs.emergingtravel.com/docs/b2b-api/static-content/retrieve-incremental-hotel-reviews-dump/) - [Retrieve single act](https://docs.emergingtravel.com/docs/b2b-api/documents/retrieve-single-act/) - [Prebook rate from hotelpage step](https://docs.emergingtravel.com/docs/b2b-api/hotel-search/prebook-rate-from-hotelpage-step/) - [Retrieve point of interest dump](https://docs.emergingtravel.com/docs/b2b-api/static-content/retrieve-point-of-interest-dump/) - [Prebook rate from search step](https://docs.emergingtravel.com/docs/b2b-api/hotel-search/prebook-rate-from-search-step/) - [Retrieve hotel static data](https://docs.emergingtravel.com/docs/b2b-api/static-content/retrieve-hotel-static-data/) - [Retrieve rate info](https://docs.emergingtravel.com/docs/b2b-api/hotel-search/retrieve-rate-info/) - [Retrieve hotel content](https://docs.emergingtravel.com/docs/b2b-api/static-content/retrieve-hotel-content/) - [Retrieve endpoints](https://docs.emergingtravel.com/docs/b2b-api/endpoints/retrieve-endpoints/) ## Affiliate API API calls based on open sources, available on special partnership terms. - [Retrieve contract](https://docs.emergingtravel.com/docs/affiliate-api/contracts/retrieve-contract/) - [Search by hotel IDs](https://docs.emergingtravel.com/docs/affiliate-api/hotel-search/search-by-hotel-ids/) - [Create booking process](https://docs.emergingtravel.com/docs/affiliate-api/booking/create-booking-process/) - [Retrieve bookings](https://docs.emergingtravel.com/docs/affiliate-api/post-booking/retrieve-bookings/) - [Retrieve hotel dump](https://docs.emergingtravel.com/docs/affiliate-api/static-content/retrieve-hotel-dump/) - [Retrieve voucher](https://docs.emergingtravel.com/docs/affiliate-api/documents/retrieve-voucher/) - [Search by geo coordinates](https://docs.emergingtravel.com/docs/affiliate-api/hotel-search/search-by-geo-coordinates/) - [Cancel booking](https://docs.emergingtravel.com/docs/affiliate-api/post-booking/cancel-booking/) - [Create credit card token](https://docs.emergingtravel.com/docs/affiliate-api/booking/create-credit-card-token/) - [Retrieve acceptance certificate](https://docs.emergingtravel.com/docs/affiliate-api/documents/retrieve-acceptance-certificate/) - [Retrieve hotel custom dump](https://docs.emergingtravel.com/docs/affiliate-api/static-content/retrieve-hotel-custom-dump/) - [Search by region](https://docs.emergingtravel.com/docs/affiliate-api/hotel-search/search-by-region/) - [Retrieve hotel incremental dump](https://docs.emergingtravel.com/docs/affiliate-api/static-content/retrieve-hotel-incremental-dump/) - [Retrieve remuneration register](https://docs.emergingtravel.com/docs/affiliate-api/documents/retrieve-remuneration-register/) - [Start booking process](https://docs.emergingtravel.com/docs/affiliate-api/booking/start-booking-process/) - [Sort hotels](https://docs.emergingtravel.com/docs/affiliate-api/hotel-search/sort-hotels/) - [Check booking process](https://docs.emergingtravel.com/docs/affiliate-api/booking/check-booking-process/) - [Retrieve hotel reviews’ dump](https://docs.emergingtravel.com/docs/affiliate-api/static-content/retrieve-hotel-reviews-dump/) - [Suggest hotel and region](https://docs.emergingtravel.com/docs/affiliate-api/hotel-search/suggest-hotel-and-region/) - [Receive booking status webhook](https://docs.emergingtravel.com/docs/affiliate-api/booking/receive-booking-status-webhook/) - [Retrieve regions’ dump](https://docs.emergingtravel.com/docs/affiliate-api/static-content/retrieve-regions-dump/) - [Retrieve hotelpage](https://docs.emergingtravel.com/docs/affiliate-api/hotel-search/retrieve-hotelpage/) - [Retrieve hotel reviews’ incremental dump](https://docs.emergingtravel.com/docs/affiliate-api/static-content/retrieve-incremental-hotel-reviews-dump/) - [Prebook rate from hotelpage step](https://docs.emergingtravel.com/docs/affiliate-api/hotel-search/prebook-rate-from-hotelpage-step/) - [Retrieve point of interest dump](https://docs.emergingtravel.com/docs/affiliate-api/static-content/retrieve-point-of-interest-dump/) - [Prebook rate from search step](https://docs.emergingtravel.com/docs/affiliate-api/hotel-search/prebook-rate-from-search-step/) - [Retrieve hotel static data](https://docs.emergingtravel.com/docs/affiliate-api/static-content/retrieve-hotel-static-data/) - [Retrieve rate info](https://docs.emergingtravel.com/docs/affiliate-api/hotel-search/retrieve-rate-info/) - [Retrieve hotel content](https://docs.emergingtravel.com/docs/affiliate-api/static-content/retrieve-hotel-content/) - [Retrieve endpoints](https://docs.emergingtravel.com/docs/affiliate-api/endpoints/retrieve-endpoints/) ## Midoffice API Server-to-server webhooks for booking change notifications. - [Receive booking changes’ webhook](https://docs.emergingtravel.com/docs/midoffice-api/webhooks/receive-booking-changes-webhook/)