create and query Kustomer kObjects (custom objects) via the API
domain: kustomer.com · 6 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Define a custom object klass in the Kustomer admin, naming its custom attributes with the required type-suffix convention (Str, Num, At, Bool, Url, Txt)
POST to the klasses/{name} endpoint to create a new kObject instance
Use the create-for-customer variant to link a new kObject directly to a customer by customer ID
Retrieve kObjects by klass name or by a specific kObject ID with the corresponding GET endpoints
Use the bulk batch update endpoint with an ids query parameter to update multiple kObjects with the same data in one call
Query custom attribute metadata to confirm field types before writing values that must match the declared suffix convention
Known gotchas
Kustomer enforces a limit of up to 120 custom objects created per minute per customer — high-volume sync jobs need throttling
Attribute name suffixes (Str, Num, At, etc.) are not cosmetic — sending a value that doesn't match the declared type suffix fails validation
Bulk batch update applies the same data to every ID in the batch — it is not designed for per-record differing updates
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