> For the complete documentation index, see [llms.txt](https://harmonic-protocol-1.gitbook.io/documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://harmonic-protocol-1.gitbook.io/documentation/user-guide.md).

# User Guide

#### Getting Started

Connecting to Base:

1. Open MetaMask.
2. Click your network list → “Add Network.”
3. Enter:
   * **Network name:** Base
   * **RPC URL:** <https://chainlist.org/?search=base>
   * **Currency symbol:** ETH
   * **Chain ID:** 8453

Then visit the Harmonic dApp, connect your wallet, and you’re ready to trade or validate.

#### For Buyers & Sellers

1. Connect your wallet to the Harmonic dApp (Base network).
2. Then set :
   * Amount you want to buy (in USDC)
   * Slippage tolerance
   * Tip (for faster validation)
3. Sign the 402 request (no gas required).
4. Your request enters the public mempool and awaits validation.

Once a validator executes it, the trade is completed and your wallet is updated automatically.

Please note that you can execute buy or sell orders through a trading bot, but a 5% fee will be applied.\
4% will be distributed to validators as rewards, and 1% will go to the team wallet.

#### For Validators

1. Open the Harmonic dApp and navigate to the **Mempool** tab.
2. Browse pending requests - filter by tip or token amount.
3. Select a transaction and solve the CAPTCHA.
4. Submit and confirm the validation.
5. Receive your USDC reward instantly to your wallet.


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