diff --git a/api/migrations/versions/2025_07_21_0935-1a83934ad6d1_update_models.py b/api/migrations/versions/2025_07_21_0935-1a83934ad6d1_update_models.py
new file mode 100644
index 000000000..3bdbafda7
--- /dev/null
+++ b/api/migrations/versions/2025_07_21_0935-1a83934ad6d1_update_models.py
@@ -0,0 +1,51 @@
+"""update models
+
+Revision ID: 1a83934ad6d1
+Revises: 71f5020c6470
+Create Date: 2025-07-21 09:35:48.774794
+
+"""
+from alembic import op
+import models as models
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '1a83934ad6d1'
+down_revision = '71f5020c6470'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('tool_mcp_providers', schema=None) as batch_op:
+        batch_op.alter_column('server_identifier',
+               existing_type=sa.VARCHAR(length=24),
+               type_=sa.String(length=64),
+               existing_nullable=False)
+
+    with op.batch_alter_table('tool_model_invokes', schema=None) as batch_op:
+        batch_op.alter_column('tool_name',
+               existing_type=sa.VARCHAR(length=40),
+               type_=sa.String(length=128),
+               existing_nullable=False)
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('tool_model_invokes', schema=None) as batch_op:
+        batch_op.alter_column('tool_name',
+               existing_type=sa.String(length=128),
+               type_=sa.VARCHAR(length=40),
+               existing_nullable=False)
+
+    with op.batch_alter_table('tool_mcp_providers', schema=None) as batch_op:
+        batch_op.alter_column('server_identifier',
+               existing_type=sa.String(length=64),
+               type_=sa.VARCHAR(length=24),
+               existing_nullable=False)
+
+    # ### end Alembic commands ###
diff --git a/api/models/tools.py b/api/models/tools.py
index 7c8b5853b..f5fae8b79 100644
--- a/api/models/tools.py
+++ b/api/models/tools.py
@@ -254,7 +254,7 @@ class MCPToolProvider(Base):
     # name of the mcp provider
     name: Mapped[str] = mapped_column(db.String(40), nullable=False)
     # server identifier of the mcp provider
-    server_identifier: Mapped[str] = mapped_column(db.String(24), nullable=False)
+    server_identifier: Mapped[str] = mapped_column(db.String(64), nullable=False)
     # encrypted url of the mcp provider
     server_url: Mapped[str] = mapped_column(db.Text, nullable=False)
     # hash of server_url for uniqueness check
@@ -358,7 +358,7 @@ class ToolModelInvoke(Base):
     # type
     tool_type = db.Column(db.String(40), nullable=False)
     # tool name
-    tool_name = db.Column(db.String(40), nullable=False)
+    tool_name = db.Column(db.String(128), nullable=False)
     # invoke parameters
     model_parameters = db.Column(db.Text, nullable=False)
     # prompt messages