# Create A Foundry Project

<figure><img src="/files/Ag2FYWGoYtJBAJOOtNd3" alt=""><figcaption></figcaption></figure>

Like hardhat and truffle, foundry is a development environment for Ethereum smart contracts. And it is becoming more and more popular. Likewise, you can use foundry for developing and deploying smart contracts for KCC.

### Prerequisites&#x20;

* [Install foundry ](https://github.com/foundry-rs/foundry#installation)

{% hint style="info" %}
Foundry provides three command-line tools: forge, cast, and anvil. If you have successfully installed foundry, you can invoke any of those in your shell.&#x20;
{% endhint %}

### Create A New Project With Forge&#x20;

Let's create a new project called "my-nft" with the `forge` command from foundry:&#x20;

```bash
forge init my-nft
```

After executing the commands above, forge will create a directory named "my-nft". And there are several subdirectories and a file named "foundry.toml" in that directory:&#x20;

```
my-nft/
├── foundry.toml
├── lib
│   └── forge-std
├── script
│   └── Counter.s.sol
├── src
│   └── Counter.sol
└── test
    └── Counter.t.sol
```

### Add Configurations For KCC&#x20;

You can add two profiles to your foundry project by appending the following lines to the end of your `foundry.toml` file:&#x20;

```toml
[profile.kcc_main]
src = 'src'
out = 'out'
libs = ['lib']
# KCC has not implemented the London fork yet 
evm_version = 'berlin'
eth_rpc_url = 'https://rpc-mainnet.kcc.network'

[profile.kcc_testnet]
src = 'src'
out = 'out'
libs = ['lib']
# KCC has not implemented the London fork yet 
evm_version = 'berlin'
eth_rpc_url = 'https://rpc-testnet.kcc.network'
```

To test the configurations above, let's deploy the generated contract in the "Counter.sol" file to the KCC testnet: &#x20;

```bash
FOUNDRY_PROFILE=kcc_testnet  \
        forge create --private-key=xxxxxxxxxxx \
        --legacy  Counter
```

{% hint style="info" %}

* Forge reads the profile's name from the environment variable "FOUNDRY\_PROFILE".
* You should replace \`xxxxxxxxxxx\` with your own private key.&#x20;
  * BTW,  foundry also supports several other wallets: Keystore, mnemonic, and even Ledger.  And it is not wise to use a private key except in a test.
* You must use the `--legacy` option because KCC has not implemented EIP1559 yet.&#x20;
  {% endhint %}

If everything goes well, forge will print out the address of the deployed contract and the transaction hash for the deployment.&#x20;


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