# FAQs > Frequently Asked Questions for developers building on Flare. > For the complete documentation index, see [llms.txt](/llms.txt). Markdown versions of documentation pages are available by appending `.md` to the page URL. Source: https://dev.flare.network/support/faqs This page answers common questions encountered by developers building applications on Flare networks. ## Network & Tokens[​](#network--tokens "Direct link to Network & Tokens") ### Where can I get testnet tokens (faucet)?[​](#where-can-i-get-testnet-tokens-faucet "Direct link to Where can I get testnet tokens (faucet)?") Flare provides faucets for its public testnets: - **Flare Testnet Coston2:** Get C2FLR, FXRP, and USDT0 from the [Coston2 Faucet](https://faucet.flare.network/coston2). Use Coston2 for testing applications intended for Flare mainnet. - **Songbird Testnet Coston:** Get CFLR from the [Coston Faucet](https://faucet.flare.network/coston). Use Coston for testing applications intended for the Songbird canary network. ### How do I add Flare/Songbird networks to my wallet (e.g., MetaMask)?[​](#how-do-i-add-flaresongbird-networks-to-my-wallet-eg-metamask "Direct link to How do I add Flare/Songbird networks to my wallet (e.g., MetaMask)?") The easiest way is to visit the respective block explorer, click on **Connect** in the top right corner, and approve adding the network to your wallet. - **Flare Mainnet:** [Flare Explorer](https://flare-explorer.flare.network/) - **Coston2 Testnet:** [Coston2 Explorer](https://coston2-explorer.flare.network/) - **Songbird Canary-Network:** [Songbird Explorer](https://songbird-explorer.flare.network/) - **Coston Testnet:** [Coston Explorer](https://coston-explorer.flare.network/) Alternatively, you can add them manually using the details on the [Network Configuration](/network/overview#configuration) page. ### What's the difference between Flare and Songbird?[​](#whats-the-difference-between-flare-and-songbird "Direct link to What's the difference between Flare and Songbird?") - **Flare (FLR):** The main production network with real economic value. - **Songbird (SGB):** A "canary network" - blockchain used for testing protocol-level features and dApps in a live environment with real consequences before they are potentially deployed to Flare. It serves as a proving ground. Read more on the [Network Overview](/network/overview) page. ### Which RPC endpoint should I use?[​](#which-rpc-endpoint-should-i-use "Direct link to Which RPC endpoint should I use?") - **For Development/Testing:** The [Public RPCs](/network/overview#configuration) are convenient for getting started. However, they have rate limits and shared resources. - **For Production Applications:** It is **strongly recommended** to use a dedicated RPC endpoint from a provider for better performance, reliability, and support. See the [Developer Tools](/network/developer-tools#rpcs) page for options. - **For Running Nodes:** You can also run your own [RPC node](/run-node#rpc-node). ### What is the block time and finality on Flare?[​](#what-is-the-block-time-and-finality-on-flare "Direct link to What is the block time and finality on Flare?") Flare networks use the Snowman++ consensus protocol. - **Block Time:** Approximately 1.8 seconds. - **Finality:** Near-instantaneous (single-slot finality). Once a block is accepted by consensus, it's considered final. Learn more on the [Consensus](/network/consensus) page. ## Development Resources[​](#development-resources "Direct link to Development Resources") ### Where can I find the addresses of Flare's core smart contracts?[​](#where-can-i-find-the-addresses-of-flares-core-smart-contracts "Direct link to Where can I find the addresses of Flare's core smart contracts?") The addresses for contracts like `WNat`, `FtsoV2`, `FdcHub`, etc., vary by network. 1. **Use the `FlareContractRegistry`:** This contract acts as a directory. It has the **same address** (`0xaD67FE66660Fb8dFE9d6b1b4240d8650e30F6019`) on **all** Flare networks (Flare, Coston2, Songbird, Coston). You can query its [`getContractAddressByName`](/network/solidity-reference/IFlareContractRegistry#getcontractaddressbyname) or [`getAllContracts`](/network/solidity-reference/IFlareContractRegistry#getallcontracts) methods to find the addresses of other contracts on the specific network you are connected to. 2. **Check the Solidity Reference:** Deployed contract addresses for each network are listed on the relevant reference pages for convenience: - [Network Reference](/network/solidity-reference) - [FSP Reference](/network/fsp/solidity-reference) - [FTSOv2 Reference](/ftso/solidity-reference) - [Scaling Reference](/ftso/scaling/solidity-reference) - [FDC Reference](/fdc/reference) - [FAssets Reference](/fassets/reference) ### Are there official developer tools or SDKs?[​](#are-there-official-developer-tools-or-sdks "Direct link to Are there official developer tools or SDKs?") Flare maintains several resources to aid development: - **Language-Specific Guides:** Tutorials for interacting with Flare using [JavaScript](/network/guides/flare-for-javascript-developers), [Python](/network/guides/flare-for-python-developers), [Go](/network/guides/flare-for-go-developers), and [Rust](/network/guides/flare-for-rust-developers). - **Starter Kits:** Pre-configured project templates for [Hardhat & Foundry](/network/guides/hardhat-foundry-starter-kit). - **Developer Tools List:** A curated list of [RPCs, Indexers, Bridges, SDKs, and more](/network/developer-tools). ### Where can I learn about Flare-specific terminology?[​](#where-can-i-learn-about-flare-specific-terminology "Direct link to Where can I learn about Flare-specific terminology?") Learn more about the terminology used in the Flare ecosystem (like FTSO, FSP, PDA, etc.) on the [Terminology](/support/terminology) page. ## Community & Support[​](#community--support "Direct link to Community & Support") ### I have a project I would like to build on Flare. Can I get a grant?[​](#i-have-a-project-i-would-like-to-build-on-flare-can-i-get-a-grant "Direct link to I have a project I would like to build on Flare. Can I get a grant?") Yes! The Flare Foundation offers grants to support innovative projects that contribute to the ecosystem's growth. Learn more and apply on the [Flare Grants Program](https://flare.network/resources/grants) page. ### Where can I get technical support or ask questions?[​](#where-can-i-get-technical-support-or-ask-questions "Direct link to Where can I get technical support or ask questions?") Connect with Flare's developer community and the team through these channels: - **Flare Experts:** Get dedicated [Technical Support](https://flare.network/resources/technical-support) from a Flare expert. - **Telegram:** The primary channel for community Q&A and developer discussions. Join [Flare Network on Telegram](https://t.me/FlareNetwork). - **GitHub:** Report issues, contribute to code, or explore the open-source repositories at [Flare Foundation GitHub](https://github.com/flare-foundation/). (Best for code-specific issues, not general Q&A).