diff --git a/15.md b/15.md
index 2d62db86..4fc6ba80 100644
--- a/15.md
+++ b/15.md
@@ -10,6 +10,27 @@ Based on [Diagon-Alley](https://github.com/lnbits/Diagon-Alley).
 
 Implemented in [NostrMarket](https://github.com/lnbits/nostrmarket) and [Plebeian Market](https://github.com/PlebeianTech/plebeian-market).
 
+## Kinds
+
+The following kinds are utilized by this NIP:
+
+| Kind      |                    | Description                                                                                                     |
+| --------- | ------------------ | --------------------------------------------------------------------------------------------------------------- |
+| `0`       | `set_meta`         | The merchant description (similar with any `nostr` public key).                                                 |
+| `5`       | `delete`           | Delete a product or a stall.                                                                                    |
+| `14`      | `direct_message`   | Communicate with the customer. The messages can be plain-text or JSON.                                          |
+| `1021`    | `bid`              | Customer places bid on auctioned product.                                                                       |
+| `1022`    | `bid_success`      | Merchant accepts customer's bid for auctioned product.                                                          |
+| `30017`   | `set_stall`        | Create or update a stall.                                                                                       |
+| `30018`   | `set_product`      | Create or update a product.                                                                                     |
+| `30018`   | `customize_market` | Save customizations for marketplace experience.                                                                 |
+| `30020`   | `set_auction`      | Create or update a product sold as an auction                                                                   |
+| `30030`   | `request_payment`  | Merchant requests payment for order from customer.                                                              |
+| `30031`   | `submit_order`     | Customer submits order to merchant for product.                                                                 |
+| `30032`   | `confirm_payment`  | Merchant confirms payment is received for order.                                                                |
+| `30033`   | `confirm_shipment` | Merchant confirms order has been shipped.                                                                       |
+
+
 ## Terms
 
 - `merchant` - seller of products with NOSTR key-pair
@@ -20,6 +41,16 @@ Implemented in [NostrMarket](https://github.com/lnbits/nostrmarket) and [Plebeia
 
 ## Nostr Marketplace Clients
 
+### Customer Events
+
+A customer can publish these events: 
+| Kind      |                    | Description                                                                                                     |
+| --------- | ------------------ | --------------------------------------------------------------------------------------------------------------- |
+| `14`      | `direct_message`   | Communicate with the merchant. The messages can be plain-text or JSON.                                          |
+| `1021`    | `bid`              | Customer places bid on auctioned product.                                                                       |
+| `30018`   | `customize_market` | Save customizations for marketplace experience.                                                                 |
+| `30031`   | `submit_order`     | Customer submits order to merchant for product.                                                                 |
+
 ### Merchant admin
 
 Where the `merchant` creates, updates and deletes `stalls` and `products`, as well as where they manage sales, payments and communication with `customers`.
@@ -38,14 +69,11 @@ A merchant can publish these events:
 | `0`       | `set_meta`         | The merchant description (similar with any `nostr` public key).                                                 |
 | `5`       | `delete`           | Delete a product or a stall.                                                                                    |
 | `14`      | `direct_message`   | Communicate with the customer. The messages can be plain-text or JSON.                                          |
-| `1021`    | `bid`              | Customer places bid on auctioned product.                                                                       |
 | `1022`    | `bid_success`      | Merchant accepts customer's bid for auctioned product.                                                          |
 | `30017`   | `set_stall`        | Create or update a stall.                                                                                       |
 | `30018`   | `set_product`      | Create or update a product.                                                                                     |
-| `30018`   | `customize_market` | Save customizations for marketplace experience.                                                                 |
 | `30020`   | `set_auction`      | Create or update a product sold as an auction                                                                   |
 | `30030`   | `request_payment`  | Merchant requests payment for order from customer.                                                              |
-| `30031`   | `submit_order`     | Customer submits order to merchant for product.                                                                 |
 | `30032`   | `confirm_payment`  | Merchant confirms payment is received for order.                                                                |
 | `30033`   | `confirm_shipment` | Merchant confirms order has been shipped.                                                                       |