Ensure standard platform-fee items

Internal bounded repair. Financial fields are resolved from the seller-tenant catalog; the caller supplies only the fee effective timestamp.

Related endpoints

• POST /subscriptions — Create a new subscription
• GET /subscriptions — List subscriptions
• GET /subscriptions/{id} — Get subscription by ID
• PATCH /subscriptions/{id} — Update subscription details
• DELETE /subscriptions/{id} — Delete subscription
• POST /subscriptions/{id}/change-plan — Change subscription plan
• POST /subscriptions/{id}/change-quantity — Change subscription quantity
• POST /subscriptions/{id}/preview-renewal — Preview subscription renewal

Common errors

• 400 invalid_request — malformed payload or failed validation.
• 401 unauthenticated — missing, malformed, or revoked API key.
• 404 resource_missing — the referenced resource does not exist or is not visible to your key.

Idempotency

Pass an Idempotency-Key header (UUID v4 recommended) to make retries safe. Keys are valid for 24 hours; see the idempotency guide.

curl -X POST "https://api.revkeen.com/v2/subscriptions/00000000-0000-0000-0000-000000000000/items/ensure-platform-fee-items" \
  -H "x-api-key: $REVKEEN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "effective_at": "2026-01-01T00:00:00Z"
  }'

{
  "data": {
    "subscription_id": "aa11a4c2-a467-43db-b413-c4ab0f5cf627",
    "added": [
      {
        "item_id": "4d8cd62e-a579-4dae-af8c-3172f96f8f7c",
        "price_id": "5eff5d89-979e-4e4f-aa76-6cbbbf11362c",
        "meter_id": "1e13adc1-9ac9-453b-b100-17d2f2da2eb8"
      }
    ],
    "retained": [
      {
        "item_id": "4d8cd62e-a579-4dae-af8c-3172f96f8f7c",
        "price_id": "5eff5d89-979e-4e4f-aa76-6cbbbf11362c",
        "meter_id": "1e13adc1-9ac9-453b-b100-17d2f2da2eb8"
      }
    ]
  }
}

{
  "error": "Bad request"
}

{
  "error": "Unauthorized"
}

{
  "error": "Not found"
}