# What size does buy trade when I give no size?

> The usual amount, set where the script runs.

Source: https://algobarsx.com/docs/why-default-size/

A script that says `buy` and nothing more is a reasonable script. It means “the usual amount”, and the usual amount belongs to wherever the script is run, not to the script. In the Terminal that is the **Lot size** in the backtest panel and the **Trade size** when you deploy. When nothing is set anywhere, it is the smallest lot the market deals in.

A script that names a `size:` or a `risk:` is never overruled.