> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agentcard.sh/llms.txt
> Use this file to discover all available pages before exploring further.

# agent-cards buy qty

> Set a product's quantity in the cart (0 removes it)

Set a product's quantity in the cart (0 removes it)

```bash theme={null}
agent-cards buy qty --help
```

```text theme={null}
Usage: agent-cards buy qty [options] <merchant> <productId> <quantity>

Set a product's quantity in the cart (0 removes it)

Options:
  -h, --help  display help for command
```