with-viem

Example: with-viem

This example shows how to construct and sign a transaction using Turnkey's @turnkey/viem signer, using API keys.

If you want to see a demo with passkeys, head to the example with-viem-and-passkeys to see a NextJS app using passkeys.

Getting started

1/ Cloning the example

Make sure you have Node.js installed locally; we recommend using Node v16+.

$ git clone https://github.com/tkhq/sdk
$ cd sdk/
$ corepack enable  # Install `pnpm`
$ pnpm install -r  # Install dependencies
$ pnpm run build-all  # Compile source code
$ cd examples/with-viem/

2/ Setting up Turnkey

The first step is to set up your Turnkey organization and account. By following the Quickstart guide, you should have:

• A public/private API key pair for Turnkey
• An organization ID
• A (crypto) private key ID

Once you've gathered these values, add them to a new .env.local file. Notice that your private key should be securely managed and never be committed to git.

$ cp .env.local.example .env.local

Now open .env.local and add the missing environment variables:

• API_PUBLIC_KEY
• API_PRIVATE_KEY
• BASE_URL
• ORGANIZATION_ID
• PRIVATE_KEY_ID

3/ Running the scripts

$ pnpm start

This script will do the following:

1. construct a new transaction
2. sign it with Turnkey
3. broadcast it via Infura

Sample output from a successful execution:

$ pnpm start
Fetching Node.js 18.0.0 ...

> @turnkey/[email protected] start /Users/rno/tkhq/code/sdk/examples/with-viem
> pnpm -w run build-all && tsx src/index.ts


> @turnkey/oss@ build-all /Users/rno/tkhq/code/sdk
> tsc --build tsconfig.mono.json

Source address
        0xfe81d134AC28b5CAc01E198E5988F449621d960B

Transaction
        https://sepolia.etherscan.io/tx/0x91a388d8a6e506bbaeaf21b2914461a0f6125afb3a84a4cf27bdf5e9eb06ffce