> For the complete documentation index, see [llms.txt](https://docs.21x.eu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.21x.eu/sample-use-cases-and-code/direct-smart-contract-interaction.md).

# Direct Smart Contract Interaction

Alternatively to our Python SDK, customers can use third-party Web3 libraries or platforms like fireblocks to directly interact with the smart contract on the Polygon network. This approach requires a understanding of smart contract inte ractions and the required payload.

The following three examples will give you some more insides about the required interaction with the smart contract.

### Use Cases

#### Creating a Buy Order

To create a buy order, you need to prepare the payload with specific parameters detailing price, quantity, and other relevant details.

#### Creating a Sell Order

Similar to a buy order, a sell order requires you to specify parameters in the payload such as the asset you intend to sell and your desired price.

#### Canceling Open Orders

Canceling orders requires identification of the specific order you want to cancel. Ensure the payload includes the correct order ID.

###


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