diff --git a/app/src/main/java/com/example/citrusclient/models/Todo.java b/app/src/main/java/com/example/citrusclient/models/Todo.java
new file mode 100644
index 0000000..eb1d9a9
--- /dev/null
+++ b/app/src/main/java/com/example/citrusclient/models/Todo.java
@@ -0,0 +1,40 @@
+package com.example.citrusclient.models;
+
+public class Todo {
+
+    String accountId;
+    Integer bookId;
+    String title;
+    boolean check;
+    int year;
+    int month;
+    int day;
+    Integer todoId;
+
+    //セッター
+    public void setAccountId(String aid) {accountId = aid;}
+    public void setBookId(Integer bid) {bookId = bid;}
+    public void setTitle(String t) {title = t;}
+    public void setCheck(boolean c) {check = c;}
+    public void setYear(int y) {year = y;}
+    public void setMonth(int m) {month = m;}
+    public void setDay(int d) {day = d;}
+    public void setTodoId(Integer t) {todoId = t;}
+
+    //ゲッター
+    public String getAccountId() {return accountId;}
+    public Integer getBookId(){return bookId;}
+    public String getTitle() {return title;}
+
+    public boolean getCheck() {return check;}
+
+    public int getYear() {return year;}
+
+    public int getMonth() {return month;}
+
+    public int getDay() {return day;}
+
+    public Integer getTodoId() {
+        return todoId;
+    }
+}
diff --git a/app/src/main/java/com/example/citrusclient/rest/TodosRest.java b/app/src/main/java/com/example/citrusclient/rest/TodosRest.java
index 5e169ab..88c6ad8 100644
--- a/app/src/main/java/com/example/citrusclient/rest/TodosRest.java
+++ b/app/src/main/java/com/example/citrusclient/rest/TodosRest.java
@@ -1,5 +1,95 @@
 package com.example.citrusclient.rest;
 
+import com.example.citrusclient.models.Todo;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+
+import retrofit2.Call;
+import retrofit2.Response;
+import retrofit2.http.DELETE;
+import retrofit2.http.Field;
+import retrofit2.http.FormUrlEncoded;
+import retrofit2.http.GET;
+import retrofit2.http.POST;
+import retrofit2.http.PUT;
+import retrofit2.http.Path;
+import retrofit2.http.Query;
+
 public interface TodosRest {
 
+    @GET("/accounts/{account_id}/books/{book_id}/todos")
+    Call<ArrayList<Todo>> getAllTodos(
+            @Path("account_id") String accountId,
+            @Path("book_id") Integer bookId,
+            @Query("token") String token
+    );
+
+    @GET("/accounts/{account_id}/books/{book_id}/todos/{year}/{month}")
+    Call<ArrayList<Todo>> getTodosByMonth(
+            @Path("account_id") String accountId,
+            @Path("book_id") Integer bookId,
+            @Path("year") Integer year,
+            @Path("month") Integer month,
+            @Query("token") String token
+    );
+
+    @GET("/accounts/{account_id}/books/{book_id}/todos/{year}/{month}/{day}")
+    Call<ArrayList<Todo>> getTodosByDay(
+            @Path("account_id") String accountId,
+            @Path("book_id") Integer bookId,
+            @Path("year") Integer year,
+            @Path("month") Integer month,
+            @Path("day") Integer day,
+            @Query("token") String token
+    );
+
+    @GET("/accounts/{account_id}/books/{book_id}/todos/{year}/{month}/{day}/{todo_id}")
+    Call<Todo> getTodoById(
+            @Path("account_id") String accountId,
+            @Path("book_id") Integer bookId,
+            @Path("year") Integer year,
+            @Path("month") Integer month,
+            @Path("day") Integer day,
+            @Path("todo_id") Integer todoId,
+            @Query("token") String token
+    );
+
+    @FormUrlEncoded
+    @POST("/accounts/{account_id}/books/{book_id}/todos/{year}/{month}/{day}")
+    Call<Todo> createTodo(
+            @Path("account_id") String accountId,
+            @Path("book_id") Integer bookId,
+            @Path("year") Integer year,
+            @Path("month") Integer month,
+            @Path("day") Integer day,
+            @Field("title") String title,
+            @Field("token") String token
+    );
+    @FormUrlEncoded
+    @PUT("/accounts/{account_id}/books/{book_id}/todos/{year}/{month}/{day}/{todo_id}/check")
+    Call<Void> setCheck(
+            @Path("account_id") String accountId,
+            @Path("book_id") Integer bookId,
+            @Path("year") Integer year,
+            @Path("month") Integer month,
+            @Path("day") Integer day,
+            @Path("todo_id") Integer todoId,
+            @Field("check") boolean check,
+            @Field("token") String token
+    );
+
+    @DELETE("/accounts/{account_id}/books/{book_id}/todos/{year}/{month}/{day}/{todo_id}")
+    Call<Void> deleteTodoById(
+            @Path("account_id") String accountId,
+            @Path("book_id") Integer bookId,
+            @Path("year") Integer year,
+            @Path("month") Integer month,
+            @Path("day") Integer day,
+            @Path("todo_id") Integer todoId,
+            @Query("token") String token
+    );
+
+
 }