> For the complete documentation index, see [llms.txt](https://docs.rwa-chain.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rwa-chain.io/gasless.md). # Gasless transactions Users on RWA Chain do not need ETH. The app asks a relayer for a quote, the wallet signs an EIP-712 request (and, the first time, an ERC-2612 permit), and the relayer submits it through **RWAForwarder**, which charges the fee in RWA to the treasury and executes the call as the user (ERC-2771). * Fee = gas cost in ETH converted to RWA + 15 % margin. * A failed call charges nothing: the forwarder reverts with the target. * Protocol contracts (AssetRegistry, IdentityRegistry, RWAMarketplace) trust the forwarder and read the real sender via `_msgSender()`. * Any dApp can use the same forwarder; the request type is `Request(address from,address to,uint256 gas,uint256 nonce,uint48 deadline,uint256 fee,bytes data)` with EIP-712 domain `RWAForwarder` version `1`. Try it: --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.rwa-chain.io/gasless.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.