diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index cfb3087..0e4e844 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -38,6 +38,11 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v3
 
+    - name: Start MongoDB
+      uses: supercharge/mongodb-github-action@1.10.0
+      with:
+        mongodb-version: 7.0.6
+
     - name: Set up JDK 21
       uses: actions/setup-java@v3
       with:
diff --git a/README.md b/README.md
index a8bea30..e044dbf 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,8 @@
 ## Overview
 This project serves as an example of food ordering system using a microservice approach.
 
-## UserManagementAPI
-Simple microservice for managing users, built using Spring Boot and Kotlin.
+## User Management API [REST]
+Simple REST API for managing users, built using Spring Boot and Kotlin.
 
 ### How to run
 
@@ -16,7 +16,7 @@ Simple microservice for managing users, built using Spring Boot and Kotlin.
 ~$ docker-compose up
 ```
 
-UserManagementAPI will be avaiable on ```localhost:8080/api/v1```. Access Swagger ```http://localhost:8080/api/v1/swagger-ui/index.html```.
+User Management API will be avaiable on ```localhost:8080/api/v1```. Access Swagger ```http://localhost:8080/api/v1/swagger-ui/index.html```.
 
 ### Unit Tests
 Before running unit tests, ensure that you have a local MongoDB instance running on ```localhost:27017```.
@@ -27,3 +27,31 @@ Before running unit tests, ensure that you have a local MongoDB instance running
 - GET /api/v1/users/{id}
 - PUT /api/v1/users/{id}
 - DELETE /api/v1/users/{id}
+
+## Order Processing API [gRPC]
+Simple gRPC API for managing users, built using Quarkus and Kotlin.
+
+### How to run
+
+```console
+~$ cd OrderProcessingAPI
+~$ docker-compose up
+```
+
+Order Processing gRPC API will be avaiable on ```grpc://localhost:9000```.
+
+### Unit Tests
+Before running unit tests, ensure that you have a local MongoDB instance running on ```localhost:27017```.
+
+### Available gRPC Methods
+```
+service OrderService {
+  rpc CreateOrder (Order) returns (Confirmation) {}
+  rpc GetOrder (GetOrderRequest) returns (Order) {}
+  rpc UpdateOrder (Order) returns (Confirmation) {}
+  rpc GetOrdersBySeller (GetOrdersRequest) returns (stream Order) {}
+  rpc GetOrdersByDeliveryPerson (GetOrdersRequest) returns (stream Order) {}
+  rpc DeleteOrder (DeleteOrderRequest) returns (Confirmation) {}
+  rpc Health (Empty) returns (Confirmation) {}
+}
+```