diff --git a/api/migrations/versions/2025_05_29_1707-de71f8771550_add_app_mcp_client_and_server.py b/api/migrations/versions/2025_05_29_1707-de71f8771550_add_app_mcp_client_and_server.py
index bb669474e0..7e610521cb 100644
--- a/api/migrations/versions/2025_05_29_1707-de71f8771550_add_app_mcp_client_and_server.py
+++ b/api/migrations/versions/2025_05_29_1707-de71f8771550_add_app_mcp_client_and_server.py
@@ -35,7 +35,7 @@ def upgrade():
     op.create_table('tool_mcp_providers',
     sa.Column('id', models.types.StringUUID(), server_default=sa.text('uuid_generate_v4()'), nullable=False),
     sa.Column('name', sa.String(length=40), nullable=False),
-    sa.Column('server_url', sa.String(length=512), nullable=False),
+    sa.Column('server_url', sa.Text(), nullable=False),
     sa.Column('server_url_hash', sa.String(length=64), nullable=False),
     sa.Column('icon', sa.String(length=255), nullable=True),
     sa.Column('tenant_id', models.types.StringUUID(), nullable=False),
diff --git a/api/models/tools.py b/api/models/tools.py
index 8a8d254227..2bca8ac18d 100644
--- a/api/models/tools.py
+++ b/api/models/tools.py
@@ -240,7 +240,7 @@ class MCPToolProvider(Base):
     # name of the mcp provider
     name: Mapped[str] = mapped_column(db.String(40), nullable=False)
     # encrypted url of the mcp provider
-    server_url: Mapped[str] = mapped_column(db.String(512), nullable=False)
+    server_url: Mapped[str] = mapped_column(db.Text, nullable=False)
     # hash of server_url for uniqueness check
     server_url_hash: Mapped[str] = mapped_column(db.String(64), nullable=False)
     # icon of the mcp provider