feat: add MCP support (#20716)

Co-authored-by: QuantumGhost <obelisk.reg+git@gmail.com>

api/models/model.py

@@ -1456,6 +1456,39 @@ class EndUser(Base, UserMixin):
     updated_at = db.Column(db.DateTime, nullable=False, server_default=func.current_timestamp())
 
 
+class AppMCPServer(Base):
+    __tablename__ = "app_mcp_servers"
+    __table_args__ = (
+        db.PrimaryKeyConstraint("id", name="app_mcp_server_pkey"),
+        db.UniqueConstraint("tenant_id", "app_id", name="unique_app_mcp_server_tenant_app_id"),
+        db.UniqueConstraint("server_code", name="unique_app_mcp_server_server_code"),
+    )
+    id = db.Column(StringUUID, server_default=db.text("uuid_generate_v4()"))
+    tenant_id = db.Column(StringUUID, nullable=False)
+    app_id = db.Column(StringUUID, nullable=False)
+    name = db.Column(db.String(255), nullable=False)
+    description = db.Column(db.String(255), nullable=False)
+    server_code = db.Column(db.String(255), nullable=False)
+    status = db.Column(db.String(255), nullable=False, server_default=db.text("'normal'::character varying"))
+    parameters = db.Column(db.Text, nullable=False)
+
+    created_at = db.Column(db.DateTime, nullable=False, server_default=func.current_timestamp())
+    updated_at = db.Column(db.DateTime, nullable=False, server_default=func.current_timestamp())
+
+    @staticmethod
+    def generate_server_code(n):
+        while True:
+            result = generate_string(n)
+            while db.session.query(AppMCPServer).filter(AppMCPServer.server_code == result).count() > 0:
+                result = generate_string(n)
+
+            return result
+
+    @property
+    def parameters_dict(self) -> dict[str, Any]:
+        return cast(dict[str, Any], json.loads(self.parameters))
+
+
 class Site(Base):
     __tablename__ = "sites"
     __table_args__ = (