# TransactionStep

Individual transaction step within a purchase flow. Represents a single blockchain transaction that needs to be executed. Steps enable explicit user control over multi-transaction operations, following Web3 best practices for transparency and user consent.

## Fields

| Field                                                                                                                                    | Type                | Required | Description                                                 |
| ---------------------------------------------------------------------------------------------------------------------------------------- | ------------------- | -------- | ----------------------------------------------------------- |
| id                                                                                                                                       | string              | ✅        | Unique identifier for this step                             |
| name                                                                                                                                     | string              | ✅        | Human-readable step name (e.g., "Approve USDC", "Mint NFT") |
| type                                                                                                                                     | TransactionStepType | ✅        | Type of transaction: `'mint'` \| `'approve'`                |
| [transactionData](https://github.com/manifoldxyz/client-sdk/blob/main/packages/client-sdk/docs/sdk/transaction-steps/transactionData.md) | TransactionData     | ✅        | Raw transaction data for custom execution                   |
| [execute](/client-sdk/sdk/transaction-steps/execute.md)                                                                                  | function            | ✅        | Executes this transaction step                              |
| description                                                                                                                              | string              | ❌        | Optional detailed description of what this step does        |
| cost                                                                                                                                     | object              | ❌        | Cost breakdown for this specific step                       |
| cost.native                                                                                                                              | Money               | ❌        | Native token cost (ETH, etc.)                               |
| cost.erc20s                                                                                                                              | Money\[]            | ❌        | ERC20 token costs                                           |

## Common Step Types

* **`approve`**: ERC20 token approval for payment
* **`mint`**: Actual NFT minting transaction

## Usage

Steps should be executed in order, as later steps may depend on earlier ones.

### Example: Iterating Through Steps

```typescript
// Execute steps manually for better UX
for (const step of preparedPurchase.steps) {
  console.log(`Executing: ${step.name}`);
  const receipt = await step.execute(adapter);
  console.log(`✓ ${step.name} complete: ${receipt.txHash}`);
}
```

## See Also

* [TransactionData](https://github.com/manifoldxyz/client-sdk/blob/main/packages/client-sdk/docs/sdk/transaction-steps/transactionData.md) - Raw transaction data for custom execution
* [execute](/client-sdk/sdk/transaction-steps/execute.md) - Built-in execution function
* [PreparedPurchase](/client-sdk/reference/preparedpurchase.md) - Parent structure containing steps


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