> For the complete documentation index, see [llms.txt](https://docs-zkevm.cronos.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-zkevm.cronos.com/for-developers/developer-tools/txsync-paymaster.md).

# txSync (Paymaster)

txSync's Tsuko aims to simplify the usage of paymasters on ZK chains by providing a Paymaster as a Service (PaaS) product that can be used out of box.

Tsuko is available for Cronos zkEVM testnet only. Read the testnet integration post for details: <https://www.txfusion.io/blog/txsync-cronos-zkevm-tsuko-paymasters-testnet>

### Deployment status

* **❌ Cronos zkEVM Mainnet (Chain-id : `388` )**

Not available yet.

* :white\_check\_mark: **Cronos zkEVM Sepolia Testnet (Chain-id : `282` )**

Deployment completed.


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