{"slug":"omnisend-api","name":"Omnisend API","host":"api.omnisend.com","site":"https://omnisend.com","category":"marketing","docsUrl":null,"sources":[{"kind":"archive","url":"https://api-docs.omnisend.com/v3/reference"},{"kind":"archive","url":"https://api-docs.omnisend.com/v5/reference/overview"}],"url":"https://www.okapi.bot/providers/omnisend-api/","json":"https://www.okapi.bot/api/v1/providers/omnisend-api.json","breakingChanges":[{"slug":"api-v5-stops-working","api":"omnisend-api","title":"API v5 stops working","kind":"removal","outcome":"fails","model":null,"announcedAt":null,"effectiveAt":"2027-06-30","scope":null,"calls":["/v5/*"],"method":null,"path":"/v5/*","source":{"url":"https://api-docs.omnisend.com/v5/reference/overview","kind":"archive"},"quote":"The v5 API is deprecated and will be sunset on June 30, 2027 .","migration":"Move to the v2026-03-15 API: base path https://api.omnisend.com/api/ (contacts, products, categories, batches, events), Authorization: Omnisend-API-Key {key} and an Omnisend-Version: 2026-03-15 header on every request.","migrationChange":null,"needsDecision":null,"text":{"summary":"On June 30, 2027, the Omnisend API will shut down its v5 version. All requests to /v5/* endpoints will fail after this date. The provider has deprecated this version and scheduled it for sunset.","migration":"Migrate your calls to the v2026-03-15 API. This transition requires using the base path api.omnisend.com/api/ for contacts, products, categories, batches, and events, alongside an Authorization header with your key and an Omnisend-Version header set to 2026-03-15 on every request.","by":"writer"},"publishedAt":"2026-10-23T10:07:35.188Z","updatedAt":"2026-10-23T15:23:40.844Z","status":"upcoming","tone":"risk","url":"https://www.okapi.bot/providers/omnisend-api/breaking-changes/api-v5-stops-working/"},{"slug":"api-v3-stops-working","api":"omnisend-api","title":"API v3 stops working","kind":"removal","outcome":"fails","model":null,"announcedAt":null,"effectiveAt":"2027-12-31","scope":null,"calls":["/v3/*"],"method":null,"path":"/v3/*","source":{"url":"https://api-docs.omnisend.com/v3/reference","kind":"archive"},"quote":"The v3 API is deprecated and will be sunset on December 31, 2027 .","migration":"Move to the v2026-03-15 API: base path https://api.omnisend.com/api/ (contacts, products, categories, batches, events), Authorization: Omnisend-API-Key {key} and an Omnisend-Version: 2026-03-15 header on every request.","migrationChange":null,"needsDecision":null,"text":null,"publishedAt":"2026-10-23T10:07:33.385Z","updatedAt":"2026-10-23T10:07:33.385Z","status":"upcoming","tone":"risk","url":"https://www.okapi.bot/providers/omnisend-api/breaking-changes/api-v3-stops-working/"}]}