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however, you can access Firebase via the REST API (<https://firebase.google.com/docs/firestore/use-rest-api>), and make the access by a Http Client like ktor

So the setup will be like this:
my common will be responsible for writing into my firebase database thru rest API? Am i right?

yes, all the access to Firebase will be made by your kotlin multiplatform module, via REST API

this way, you can have the access to firebase on one place and shared by your Apps

you can implement the access to Firebase on the iOS and Android common code source folders on kotlin mutiplatform module

I mean, you can to duplicate the code to access Firebase using the platform specific SDKs

but, I don't recommend to do this way (code duplicated :weary:)

Thank you very much for your insight! Will experiment will all your suggestions

Thanks a lot

im having a difficulty importing ktor in my shared library

```
commonMain {
    dependencies {
        implementation kotlin('stdlib-common')

        implementation "org.jetbrains.kotlinx:kotlinx-serialization-runtime-common:$serialization_version"
        implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core-common:$coroutines_version"

        implementation "io.ktor:ktor-client-core:$ktor_version"
        implementation "io.ktor:ktor-client-json:$ktor_version"
        implementation "io.ktor:ktor-client-logging:$ktor_version"
        implementation "io.ktor:ktor-client-serialization:$ktor_version"
    }
}

```

did you put your dependencies like this ?

It says unknown property 'serialization_version'

well you can define it on the module's `build.gradle` file like: `def serialization_version="0.13.0"`

but I like to do it on the project's `gradle.properties` like:
```

# kotlin
kotlin_version=1.3.50
kotlin.code.style=official
#kotlin.incremental.multiplatform=true

# kotlin libraries
serialization_version=0.13.0
coroutines_version=1.3.2
ktor_version=1.2.5
```

and then use it on all `build.gradle` file on my project