diff --git a/backend/api/models/user_models.py b/backend/api/models/user_models.py
index 4b20fc0..aa55399 100644
--- a/backend/api/models/user_models.py
+++ b/backend/api/models/user_models.py
@@ -1,3 +1,5 @@
+# api/models/user_models.py
+
 from typing import List, Optional, Union
 from pydantic import BaseModel, EmailStr, Field
 from datetime import datetime
diff --git a/backend/api/routers/docit2mf_build.py b/backend/api/routers/docit2mf_build.py
index 7b132b4..75660f4 100644
--- a/backend/api/routers/docit2mf_build.py
+++ b/backend/api/routers/docit2mf_build.py
@@ -1,18 +1,14 @@
-# routers/docit2mf_build.py
+# api/routers/docit2mf_build.py
 
-from fastapi import APIRouter, Depends, HTTPException
+from fastapi import APIRouter, HTTPException
 from api.models.docit2mf_models import DoCIT2MFMultiRequest
 from api.services.docit2mf_build_service import build_it2mf_from_level
-from api.utils.security import get_current_user
 
 router = APIRouter(prefix="/criteria", tags=["criteria"])
 
 
 @router.post("/doc-it2mf/build")
-async def build_doc_it2mf(
-    request: DoCIT2MFMultiRequest,
-    current_user: dict = Depends(get_current_user)
-):
+async def build_doc_it2mf(request: DoCIT2MFMultiRequest):
     results = []
 
     try:
diff --git a/backend/api/routers/history.py b/backend/api/routers/history.py
index 0110241..03c3db1 100644
--- a/backend/api/routers/history.py
+++ b/backend/api/routers/history.py
@@ -1,3 +1,5 @@
+# api/routers/history.py
+
 from fastapi import APIRouter, HTTPException, status, Depends
 from datetime import datetime
 from bson import ObjectId
@@ -9,6 +11,9 @@ from api.utils.security import get_current_user
 router = APIRouter(prefix="/history", tags=["history"])
 
 
+# -----------------------------
+# 1. Añadir un elemento al historial
+# -----------------------------
 @router.post("/add")
 async def add_history_item(
     data: HistoryCreateRequest,
@@ -21,7 +26,7 @@ async def add_history_item(
         "_id": history_item_id,
         "name": data.name,
         "created_at": datetime.utcnow(),
-        "results": [r.dict() for r in data.results],  # ahora soporta IT2MF
+        "results": [r.dict() for r in data.results],
     }
 
     await users_collection.update_one(
@@ -35,7 +40,9 @@ async def add_history_item(
     }
 
 
-
+# -----------------------------
+# 2. Eliminar un elemento del historial
+# -----------------------------
 @router.delete("/delete/{history_item_id}")
 async def delete_history_item(
     history_item_id: str,
@@ -55,3 +62,75 @@ async def delete_history_item(
         )
 
     return {"message": "Elemento eliminado del historial"}
+
+
+# -----------------------------
+# 3. Obtener todos los historiales de todos los usuarios (ordenados)
+# -----------------------------
+@router.get("/all")
+async def get_all_histories():
+    users = await users_collection.find().to_list(None)
+
+    all_histories = []
+
+    for user in users:
+        user_id = str(user["_id"])
+        username = user.get("username", "unknown")
+        history = user.get("history", [])
+
+        for item in history:
+            all_histories.append({
+                "user_id": user_id,
+                "username": username,
+                "history_item": {
+                    "_id": str(item["_id"]),
+                    "name": item["name"],
+                    "created_at": item["created_at"],
+                    "results": item["results"]
+                }
+            })
+
+    # Ordenar por fecha
+    all_histories_sorted = sorted(
+        all_histories,
+        key=lambda h: h["history_item"]["created_at"]
+    )
+
+    return {"count": len(all_histories_sorted), "histories": all_histories_sorted}
+
+
+# -----------------------------
+# 4. Obtener historiales del usuario autenticado (ordenados)
+# -----------------------------
+@router.get("/user")
+async def get_user_histories(current_user: dict = Depends(get_current_user)):
+    user_id = current_user["_id"]
+
+    user = await users_collection.find_one({"_id": user_id})
+
+    if not user:
+        raise HTTPException(
+            status_code=404,
+            detail="Usuario no encontrado."
+        )
+
+    history = user.get("history", [])
+
+    # Ordenar por fecha
+    history_sorted = sorted(history, key=lambda h: h["created_at"])
+
+    formatted_history = []
+    for item in history_sorted:
+        formatted_history.append({
+            "_id": str(item["_id"]),
+            "name": item["name"],
+            "created_at": item["created_at"],
+            "results": item["results"]
+        })
+
+    return {
+        "user_id": str(user_id),
+        "username": user.get("username", "unknown"),
+        "count": len(formatted_history),
+        "history": formatted_history
+    }