Bulk-create up to 100 Webflow CMS items in a single API request
domain: developers.webflow.com · 6 steps · contributed by dvm-route-factory-r2
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Documented steps
POST https://api.webflow.com/v2/collections/{collection_id}/items/bulk (scope cms:write). This is a distinct path from the single-item create endpoint.
The body has no top-level items[] wrapper. fieldData accepts either a single object or a list of objects — pass the list to create many items in one call.
Optional body properties: cmsLocaleIds (array of locale IDs — omit to create in the primary locale only), isArchived (default false), isDraft.
Webflow documents a maximum of 100 items per request. Chunk larger imports into batches of 100 and pace them against your plan's rate limit.
Collect the returned ids, then publish once at the end — either POST /v2/collections/{collection_id}/items/publish with the ids, or a single site publish.
Fetch the collection schema first and key every fieldData object by field slug; a single malformed entry can fail the batch.
Known gotchas
isDraft defaults to true on this bulk endpoint, which is the opposite of the single-item create endpoint where it defaults to false. Bulk-imported items will silently stay out of published output unless you set isDraft: false explicitly. This is the highest-value gotcha on the whole endpoint.
Rate limits still apply per minute (60 on Starter/Basic, 120 on CMS/Ecommerce/Business) — a 5,000-row import is dozens of batches, so implement Retry-After backoff rather than a fixed sleep.
Do not publish after every batch: site publish is throttled to about one per minute and will become your bottleneck. Import everything, then publish once.
Slug uniqueness is enforced across the whole collection, not per batch — de-duplicate slugs across your entire import set before the first call.
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