diff --git a/app/__init__.py b/app/__init__.py
index 0f30485..7c71453 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -7,6 +7,7 @@ from app.routes.login_form import login_bp
 from app.routes.dashboard import dashboard_bp
 from app.routes.invoice_routes import invoice_bp
 from app.routes.tag_routes import tag_bp
+from app.routes.doc_tag_routes import doc_tag_bp
 from werkzeug.security import generate_password_hash
 
 def create_default_user():
@@ -60,4 +61,5 @@ def create_app():
     app.register_blueprint(login_bp, url_prefix="/login_bp")
     app.register_blueprint(dashboard_bp, url_prefix="/dashboard")
     app.register_blueprint(tag_bp, url_prefix="/tags")
+    app.register_blueprint(doc_tag_bp, url_prefix="/doc-tags")
     return app
diff --git a/app/routes/doc_tag_routes.py b/app/routes/doc_tag_routes.py
index c9798c8..424c792 100644
--- a/app/routes/doc_tag_routes.py
+++ b/app/routes/doc_tag_routes.py
@@ -1,20 +1,82 @@
-from flask import Blueprint, request, jsonify
-from models.doc_tag import DocTag
-from models.base import db
-import uuid
+from flask import Flask, request, jsonify
+from app.models.model_tag import Tag
+from app.models.doc_tag import DocTag
+from app.database import db
+from sqlalchemy.exc import SQLAlchemyError
+from uuid import UUID
 
-doc_tag_routes = Blueprint("doc_tag_routes", __name__, url_prefix="/doc-tags")
+app = Flask(__name__)
 
-@doc_tag_routes.route("/", methods=["POST"])
+@app.route("/tags", methods=["POST"])
+def create_tag():
+    try:
+        nome = request.json.get("nome")
+        if not nome:
+            return jsonify({"error": "Nome é obrigatório"}), 400
+
+        existing_tag = Tag.query.filter_by(nome=nome).first()
+        if existing_tag:
+            return jsonify({"error": "Nome já está em uso"}), 409
+        
+        new_tag = Tag(nome=nome)
+        db.session.add(new_tag)
+        db.session.commit()
+        return jsonify({"id": new_tag.id, "nome": new_tag.nome}), 201
+    
+    except SQLAlchemyError as e:
+        db.session.rollback()
+        return jsonify({"error": "Erro ao criar tag", "details": str(e)}), 500
+
+@app.route("/tags", methods=["GET"])
+def list_tags():
+    try:
+        tags = Tag.query.all()
+        if not tags:
+            return jsonify({"message": "Nenhuma tag encontrada"}), 404
+        
+        return jsonify([{ "id": tag.id, "nome": tag.nome } for tag in tags]), 200
+    
+    except SQLAlchemyError as e:
+        return jsonify({"error": "Erro ao listar tags", "details": str(e)}), 500
+
+@app.route("/tags/<uuid:tag_id>", methods=["DELETE"])
+def delete_tag(tag_id):
+    try:
+        tag = Tag.query.get(tag_id)
+        if not tag:
+            return jsonify({"error": "Tag não encontrada"}), 404
+
+        db.session.delete(tag)
+        db.session.commit()
+        return jsonify({"message": "Tag deletada com sucesso"}), 200
+    
+    except SQLAlchemyError as e:
+        db.session.rollback()
+        return jsonify({"error": "Erro ao deletar tag", "details": str(e)}), 500
+
+@app.route("/doc-tags", methods=["POST"])
 def create_doc_tag():
-    documento_id = request.json.get("documento_id")
-    tag_id = request.json.get("tag_id")
-    new_doc_tag = DocTag(documento_id=documento_id, tag_id=tag_id)
-    db.session.add(new_doc_tag)
-    db.session.commit()
-    return jsonify({"id": new_doc_tag.id, "documento_id": new_doc_tag.documento_id, "tag_id": new_doc_tag.tag_id}), 201
+    try:
+        documento_id = request.json.get("documento_id")
+        tag_id = request.json.get("tag_id")
 
-@doc_tag_routes.route("/", methods=["GET"])
+        new_doc_tag = DocTag(documento_id=documento_id, tag_id=tag_id)
+        db.session.add(new_doc_tag)
+        db.session.commit()
+        return jsonify({"id": new_doc_tag.id, "documento_id": new_doc_tag.documento_id, "tag_id": new_doc_tag.tag_id}), 201
+    
+    except SQLAlchemyError as e:
+        db.session.rollback()
+        return jsonify({"error": "Erro ao criar DocTag", "details": str(e)}), 500
+
+@app.route("/doc-tags", methods=["GET"])
 def list_doc_tags():
-    doc_tags = DocTag.query.all()
-    return jsonify([{"id": dt.id, "documento_id": dt.documento_id, "tag_id": dt.tag_id} for dt in doc_tags]), 200
+    try:
+        doc_tags = DocTag.query.all()
+        return jsonify([{ "id": dt.id, "documento_id": dt.documento_id, "tag_id": dt.tag_id } for dt in doc_tags]), 200
+    
+    except SQLAlchemyError as e:
+        return jsonify({"error": "Erro ao listar DocTags", "details": str(e)}), 500
+
+if __name__ == "__main__":
+    app.run(debug=True)