> For the complete documentation index, see [llms.txt](https://docs.zyfi.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zyfi.org/integration-guide.md).

# Integration Guide

- [Paymasters Integration](https://docs.zyfi.org/integration-guide/paymasters-integration.md)
- [ERC20 Paymaster](https://docs.zyfi.org/integration-guide/paymasters-integration/erc20-paymaster.md): Available on ZKsync Era mainnet, ZKsync Sepolia, Cronos zkEVM Mainnet, Cronos zkEVM Tesnet, Abstract Tesnet.
- [Sponsored Paymaster](https://docs.zyfi.org/integration-guide/paymasters-integration/sponsored-paymaster.md): Available on ZKsync Era mainnet, ZKsync Sepolia, Cronos zkEVM Mainnet, Cronos zkEVM Tesnet, Abstract Tesnet, Abstract Mainnet.
- [API Key management](https://docs.zyfi.org/integration-guide/paymasters-integration/api-key-management.md)
- [Intent Based](https://docs.zyfi.org/integration-guide/intent-based.md): The whole Zyfi API is a Solver in the Intent landscape.
- [Paymaster Sybil Defense](https://docs.zyfi.org/integration-guide/paymaster-sybil-defense.md): In this section, we will explore how Zyfi is designed to prevent Sybil attacks and block malicious actors, and how integration partners can also protect themselves from Sybil attacks.
- [Supported Tokens](https://docs.zyfi.org/integration-guide/supported-tokens.md)
- [Supported Tokens on ZKsync](https://docs.zyfi.org/integration-guide/supported-tokens/supported-tokens-on-zksync.md): Normally, any traded ERC20 token on zkSync is natively supported. Please find below a non-exhaustive list of tokens that have been manually audited by zkSync.
- [Supported Tokens on Abstract](https://docs.zyfi.org/integration-guide/supported-tokens/supported-tokens-on-abstract.md): Please find below a non-exhaustive list of gas tokens that are supported by Zyfi on Abstract.
- [Case Studies](https://docs.zyfi.org/integration-guide/case-studies.md): Discover all of Zyfi's Case Studies
- [Case Study: SyncSwap](https://docs.zyfi.org/integration-guide/case-studies/case-study-syncswap.md): The integration of Zyfi plays a crucial role in enhancing SyncSwap users' experience by offering FREE swaps and LP activities on ZKsync.
- [Case Study: Venus Protocol](https://docs.zyfi.org/integration-guide/case-studies/case-study-venus-protocol.md): The integration of Zyfi marks a milestone for Venus Protocol, eliminating gas fees and enabling seamless, cost-free lending and borrowing for users.
- [Case Study: PancakeSwap](https://docs.zyfi.org/integration-guide/case-studies/case-study-pancakeswap.md): The integration of Zyfi with PancakeSwap simplifies users' experiences by offering seamless swaps on ZKsync and specific gasless events (e.g., airdrops).
- [Case Study: Koi Finance](https://docs.zyfi.org/integration-guide/case-studies/case-study-koi-finance.md): Koi finance integrate Zyfi's paymaster solution to offer the best on-chain user experiences.
- [Case Study: Nodle](https://docs.zyfi.org/integration-guide/case-studies/case-study-nodle.md): Nodle has integrated Zyfi's paymaster solution into its app.
- [Case Study: Click](https://docs.zyfi.org/integration-guide/case-studies/case-study-click.md): Click has integrated Zyfi's paymaster solution into their app, fully sponsoring all transactions.
- [Case Study: Ebisu's Bay](https://docs.zyfi.org/integration-guide/case-studies/case-study-ebisus-bay.md): Ebisu’s Bay has fully integrated Zyfi’s paymaster solution, sponsoring transactions for users.
- [Case Study: Mithraeum](https://docs.zyfi.org/integration-guide/case-studies/case-study-mithraeum.md): Zyfi's integration with the fully on-chain game Mithraeum marks a major breakthrough in blockchain gaming, enabling uninterrupted gameplay by eliminating gas fee payments.
- [Case Study: Gravita](https://docs.zyfi.org/integration-guide/case-studies/case-study-gravita.md): The initial integrations of Zyfi have demonstrated that a paymaster-as-a-service solution can significantly boost daily active users, as well as the volume and frequency of transactions.
- [Case Study: Router Nitro](https://docs.zyfi.org/integration-guide/case-studies/case-study-router-nitro.md): Zyfi’s integration with Router Nitro marks a significant development in the DeFi space, enabling cross-chain swaps from ZKsync without the need for ETH to pay gas fees.
- [UI Ideas](https://docs.zyfi.org/integration-guide/ui-ideas.md): In this section, we will present different UI ideas we've already explored with our integration partners.
- [Audits](https://docs.zyfi.org/integration-guide/audits.md)