i wanna duplicate an agent create for customization for each of my client

Currently, Vapi does not offer a direct "clone" or "duplicate" feature for assistants. You can manually create a new assistant with the same configuration as your existing one using the API or dashboard, and then customize it for each client as needed ([see documentation](https://docs.vapi.ai/sdk/web#creating-assistants)). Would you like guidance on how to automate this process using the API or SDKs? Source: - [Vapi Web SDK documentation](https://docs.vapi.ai/sdk/web#creating-assistants)

how i create a assistant with the same configuration voice tools and voice

If you currently have an assistant with the configuration you want, you can easily duplicate with the three dots in the corner of the assistant dashboard page and click duplicate.