> For the complete documentation index, see [llms.txt](https://docs.1dex.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.1dex.com/user-guide/openapi.md).
# Market Order Trading
**Quickly buy or sell at the best available price.**
## 1. Passkey Users Logging in via Third-Party Authorization:
**(1) Placing a Market Buy Order:**
After confirming the quantity, click Buy to initiate PassKey verification. Once verified, the trade will be executed.
**(2) Placing a Market Sell Order:**
After confirming the quantity, click Sell to initiate PassKey verification. Once verified, the trade will be executed.
## 2. Users Logging in with exSat EVM Wallet:
**(1) Placing a Market Buy Order:**
After confirming the quantity, click \[Buy]. Once the wallet signature is completed, an on-chain transaction will be initiated.
**Note:** For first-time transactions involving non-gas tokens, an Approve operation is required.
**(2) Placing a Market Sell Order:**
After confirming the quantity, click \[Sell]. Once the wallet signature is completed, an on-chain transaction will be initiated.
**Note:** For first-time transactions involving non-gas tokens, an Approve operation is required.
