diff --git a/datasource/src/main/kotlin/gq/kirmanak/mealient/datasource/MealieDataSourceV1.kt b/datasource/src/main/kotlin/gq/kirmanak/mealient/datasource/MealieDataSourceV1.kt
new file mode 100644
index 0000000..6125e5d
--- /dev/null
+++ b/datasource/src/main/kotlin/gq/kirmanak/mealient/datasource/MealieDataSourceV1.kt
@@ -0,0 +1,41 @@
+package gq.kirmanak.mealient.datasource
+
+import gq.kirmanak.mealient.datasource.models.AddRecipeRequest
+import gq.kirmanak.mealient.datasource.models.GetRecipeResponse
+import gq.kirmanak.mealient.datasource.models.GetRecipeSummaryResponse
+import gq.kirmanak.mealient.datasource.models.VersionResponse
+
+interface MealieDataSourceV1 {
+
+    suspend fun addRecipe(
+        baseUrl: String,
+        token: String?,
+        recipe: AddRecipeRequest,
+    ): String
+
+    /**
+     * Tries to acquire authentication token using the provided credentials
+     */
+    suspend fun authenticate(
+        baseUrl: String,
+        username: String,
+        password: String,
+    ): String
+
+    suspend fun getVersionInfo(
+        baseUrl: String,
+    ): VersionResponse
+
+    suspend fun requestRecipes(
+        baseUrl: String,
+        token: String?,
+        start: Int,
+        limit: Int,
+    ): List<GetRecipeSummaryResponse>
+
+    suspend fun requestRecipeInfo(
+        baseUrl: String,
+        token: String?,
+        slug: String,
+    ): GetRecipeResponse
+}
\ No newline at end of file
diff --git a/datasource/src/main/kotlin/gq/kirmanak/mealient/datasource/MealieDataSourceV1Impl.kt b/datasource/src/main/kotlin/gq/kirmanak/mealient/datasource/MealieDataSourceV1Impl.kt
new file mode 100644
index 0000000..30a5310
--- /dev/null
+++ b/datasource/src/main/kotlin/gq/kirmanak/mealient/datasource/MealieDataSourceV1Impl.kt
@@ -0,0 +1,41 @@
+package gq.kirmanak.mealient.datasource
+
+import gq.kirmanak.mealient.datasource.models.AddRecipeRequest
+import gq.kirmanak.mealient.datasource.models.GetRecipeResponse
+import gq.kirmanak.mealient.datasource.models.GetRecipeSummaryResponse
+import gq.kirmanak.mealient.datasource.models.VersionResponse
+
+class MealieDataSourceV1Impl : MealieDataSourceV1 {
+    override suspend fun addRecipe(
+        baseUrl: String,
+        token: String?,
+        recipe: AddRecipeRequest
+    ): String {
+        TODO("Not yet implemented")
+    }
+
+    override suspend fun authenticate(baseUrl: String, username: String, password: String): String {
+        TODO("Not yet implemented")
+    }
+
+    override suspend fun getVersionInfo(baseUrl: String): VersionResponse {
+        TODO("Not yet implemented")
+    }
+
+    override suspend fun requestRecipes(
+        baseUrl: String,
+        token: String?,
+        start: Int,
+        limit: Int
+    ): List<GetRecipeSummaryResponse> {
+        TODO("Not yet implemented")
+    }
+
+    override suspend fun requestRecipeInfo(
+        baseUrl: String,
+        token: String?,
+        slug: String
+    ): GetRecipeResponse {
+        TODO("Not yet implemented")
+    }
+}
\ No newline at end of file
diff --git a/datasource/src/main/kotlin/gq/kirmanak/mealient/datasource/MealieServiceV1.kt b/datasource/src/main/kotlin/gq/kirmanak/mealient/datasource/MealieServiceV1.kt
new file mode 100644
index 0000000..8e7dcb8
--- /dev/null
+++ b/datasource/src/main/kotlin/gq/kirmanak/mealient/datasource/MealieServiceV1.kt
@@ -0,0 +1,50 @@
+package gq.kirmanak.mealient.datasource
+
+import gq.kirmanak.mealient.datasource.DataSourceModule.Companion.AUTHORIZATION_HEADER_NAME
+import gq.kirmanak.mealient.datasource.models.*
+import retrofit2.http.*
+
+interface MealieServiceV1 {
+
+    @FormUrlEncoded
+    @POST
+    suspend fun getToken(
+        @Url url: String,
+        @Field("username") username: String,
+        @Field("password") password: String,
+    ): GetTokenResponse
+
+    @POST
+    suspend fun addRecipe(
+        @Url url: String,
+        @Header(AUTHORIZATION_HEADER_NAME) token: String?,
+        @Body addRecipeRequest: AddRecipeRequest,
+    ): String
+
+    @GET
+    suspend fun getVersion(
+        @Url url: String,
+    ): VersionResponse
+
+    @GET
+    suspend fun getRecipeSummary(
+        @Url url: String,
+        @Header(AUTHORIZATION_HEADER_NAME) token: String?,
+        @Query("start") start: Int,
+        @Query("limit") limit: Int,
+    ): List<GetRecipeSummaryResponse>
+
+    @GET
+    suspend fun getRecipeSummaryV1(
+        @Url url: String,
+        @Header(AUTHORIZATION_HEADER_NAME) token: String?,
+        @Query("page") page: Int,
+        @Query("perPage") perPage: Int,
+    ): GetRecipesResponseV1
+
+    @GET
+    suspend fun getRecipe(
+        @Url url: String,
+        @Header(AUTHORIZATION_HEADER_NAME) token: String?,
+    ): GetRecipeResponse
+}
\ No newline at end of file