# Chain Connection

The Chain Connection establishes a secure onchain execution context for a workflow. It defines which network, will be used to execute all subsequent Web3 actions.

Every workflow that performs onchain operations—such as token transfers, swaps, or contract calls must begin with a Chain Connection node.

### Available Module

#### Chain Connection

Initialises a wallet session for the workflow and makes it available to downstream Web3 nodes.

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### When to Use Chain Connection

Use this node when your workflow:

* Executes any onchain transaction
* Signs messages or transactions
* Transfers tokens or native assets
* Interacts with smart contracts

It should always be placed before other Web3 nodes.

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### Adding Chain Connection to a Workflow

1. Open the Decimal workflow editor
2. Add a Trigger node
3. From Web3, select Chain Connection
4. Connect it directly after the trigger

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### Module Configuration

#### Wallet Type

Defines the wallet execution model. This is default set to the sub-wallet. This is to ensure that the entire workflow is autonomous.

Example:

*<mark style="color:$primary;">Subwallet Auto</mark>*

This automatically manages a subwallet for secure execution without exposing private keys.

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#### Network

Select the blockchain network where all subseqent web3 transactions will be executed.

Example:

*<mark style="color:$primary;">Base</mark>*

The selected network applies to all downstream Web3 actions unless overridden.

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### Output & Execution Context

Once configured, Wallet Connection:

* Establishes a signing context
* Binds the wallet to the workflow
* Enables downstream nodes to execute transactions

No explicit output variable is required—this node sets execution state.

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### Example Workflow

Use Case: Prepare a workflow for onchain execution.

Workflow:

1. Trigger
2. Chain Connection
3. Transfer Funds / 1inch / Smart Contract Function

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