# Surf Faucet #### **What is a Testnet?** **Testnets** are blockchain environments designed for **testing and development** without using real assets. They allow developers and users to **simulate transactions, test bridge operations, and optimize performance** before deploying on the **mainnet**. #### **What is Surf Faucet?** The **SurfFaucet** provides **free testnet tokens** that users can claim to **pay gas fees** when testing SurfLayer’s **bridge services** on supported testnets.\ Because deploying and interacting with smart contracts on mainnet blockchains like **Ethereum** or **Polygon** requires real gas fees, SurfLayer uses **testnets** to simulate a **realistic bridging environment** **without costing real funds**. With SurfFaucet, users can: * Request free tokens for supported testnets. * Test **bridge transactions** safely and efficiently. --- # Agent Instructions: 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: ``` GET https://docs.surflayer.xyz/features/surf-faucet.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.