Custom Fields
Delete a custom field
Permanently delete a custom field definition (per-contact values cascade). Returns `{ data: { affected: 1, ids: [customFieldId] } }`. `Idempotency-Key` is optional. Deleting a missing field returns 40
DELETE /v2/custom-fields/{customFieldId}
Parameters
Path parameters
customFieldId
string (uuid) required
Header parameters
Idempotency-Key
string
Optional. Accepted to dedupe retries on this endpoint. See
apps/rest-api/src/shared/idempotency.ts.Responses
200 — Successful response
Content-Type: application/json
data
object required
data.affected
integer required
data.ids
array<string>
data.failed
array<object>
data.failed[].id
string
data.failed[].error
object
data.failed[].error.code
string
data.failed[].error.message
string
Example
{
"data": {
"affected": 0
}
}
400 — Request body failed validation.
Content-Type: application/json
(body)
any
401 — Missing or invalid API key.
Content-Type: application/json
(body)
any
403 — Valid key, insufficient permission.
Content-Type: application/json
(body)
any
404 — Resource does not exist.
Content-Type: application/json
(body)
any
409 — Request conflicts with the current state of the resource.
Content-Type: application/json
(body)
any
429 — Rate limit exceeded.
Content-Type: application/json
(body)
any
500 — Unexpected server error.
Content-Type: application/json
(body)
any
Code samples
curl https://api.prod.getdex.com/v2/custom-fields/00000000-0000-0000-0000-000000000000 \
--request DELETE \
--header 'Authorization: Bearer YOUR_API_KEY'
fetch('https://api.prod.getdex.com/v2/custom-fields/00000000-0000-0000-0000-000000000000', {
method: 'DELETE',
headers: {
Authorization: 'Bearer YOUR_API_KEY'
}
})
requests.delete(
"https://api.prod.getdex.com/v2/custom-fields/00000000-0000-0000-0000-000000000000",
headers={
"Authorization": "Bearer YOUR_API_KEY"
}
)
Update a custom field
Partial update of a custom field definition (`name`, `field_type`, `categories`). **Requires `Idempotency-Key`.** Returns `{ data: { custom_field: {...} } }`.
Reorder custom fields
Batch ranking update (`{ updates: [{ customFieldId, ranking }] }`, max 100). Stale IDs are silently skipped. **Requires `Idempotency-Key`.** Returns the full re-ranked list: `{ data: { custom_fields:

