https://docs.squake.earth/changelog/api 2026-11-02T00:00:00Z https://docs.squake.earth/changelog/api#2026-11-02-optional-sustainability-labels-on-hotel-travel-data 2026-11-02T00:00:00Z Hotel activities accept the sustainability labels or certifications the hotel holds. The field is optional, so existing integrations need no change. See [Create travel data items](/docs/travel-data/create-travel-data-items). added: `trips[].activities[hotel].eco_labels`, an array of strings such as `["eu_ecolabel", "green_key"]`. SQUAKE trims each label and drops blank and duplicate entries. https://docs.squake.earth/changelog/api#2026-10-20-green-travel-pledge-is-now-green-travel-data 2026-10-20T00:00:00Z The Rail Delivery Group renamed the train methodology. Send `GREEN-TRAVEL-DATA` from now on. `GREEN-TRAVEL-PLEDGE` is still accepted and calculates the same way. See [Green Travel Pledge Is Now Green Travel Data](/changelog/calculation-changes/train-green-travel-data) for details. added: `items[train].methodology` value `GREEN-TRAVEL-DATA` deprecated: `items[train].methodology` value `GREEN-TRAVEL-PLEDGE`, still accepted changed: `items[train].origin` and `destination` must be CRS codes of GB National Rail stations, such as `KGX` changed: Error code `green_travel_pledge_emission_not_found` is now `green_travel_data_emission_not_found` https://docs.squake.earth/changelog/api#2026-10-20-one-status-vocabulary-for-travel-data-trips 2026-10-20T00:00:00Z Trip `status` is no longer echoed as sent. SQUAKE maps whatever wording the source uses onto five values, and the trip's dates decide the value where they can. changed: `status` in responses is one of `planned`, `confirmed`, `in_progress`, `completed`, `canceled` or `null` changed: `status` in requests is still free text, mapped on ingestion; common wordings such as `booked` and `cancelled` are recognised https://docs.squake.earth/changelog/api#2026-09-04-invitations-endpoints 2026-09-04T00:00:00Z Invite users to one of your sub-clients and read an invitation back. Re-inviting the same email address for the same sub-client is safe and sends the email again. added: `POST /v2/invitations` and `GET /v2/invitations/{id}` added: Error code `client_not_invitable` (`403`) when `client_id` isn't one of your sub-clients https://docs.squake.earth/changelog/api#2026-09-02-rem-commuter-and-urban-rail-train-types 2026-09-02T00:00:00Z Two new train types for the REM methodology. Existing train types are unchanged. added: `items[train].train_type` values `commuter` and `urban_rail` https://docs.squake.earth/changelog/api#2026-08-27-flight-schema-no-longer-declares-a-discriminator 2026-08-27T00:00:00Z The API accepts the same flight payloads as before. Only the OpenAPI description changed: clients generated from it may change shape, so regenerate typed clients and check how they handle flight items. removed: `Flight` schema: the `methodology` discriminator