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

# For Developers

- [Contributing to GoodDollar](https://docs.gooddollar.org/for-developers/contributing.md): Everyone is welcome — developers, designers, writers, founders, students, and hobbyists alike. Whatever your background, there's a path to contribute that fits your skills and availability.
- [Open Source Contributors](https://docs.gooddollar.org/for-developers/contributing/open-source-contributors.md): Human contributors review, test, fix and validate AI-generated bounty pull requests before merge and payout.
- [Contributor Growth Path](https://docs.gooddollar.org/for-developers/contributing/open-source-contributors/contributor-growth-path.md): The more you contribute, the more you unlock. Each level opens higher-tier bounties — which means more responsibility and higher rewards.
- [Contributor Role](https://docs.gooddollar.org/for-developers/contributing/open-source-contributors/contributor-role.md)
- [Human Reviewer Role](https://docs.gooddollar.org/for-developers/contributing/open-source-contributors/human-reviewer-role.md): Reviewers require approval before picking up bounties. See Getting Reviewer Access below.
- [QA Role](https://docs.gooddollar.org/for-developers/contributing/open-source-contributors/qa-role.md)
- [Payments for Reviews, contributors & QA](https://docs.gooddollar.org/for-developers/contributing/open-source-contributors/payments-for-reviews-contributors-and-qa.md): Please note: Payout requests has to be done by a G$ verified wallet.
- [Developer Guides](https://docs.gooddollar.org/for-developers/developer-guides.md)
- [Deploy your own GoodDapp UI](https://docs.gooddollar.org/for-developers/developer-guides/deploy-your-own-gooddapp-ui.md): This is a step-by-step guide to deploy your own instance of the GoodDapp to interact with the V2 smart contracts on Mainnet.
- [How to integrate the G$ token](https://docs.gooddollar.org/for-developers/developer-guides/how-to-integrate-the-gusd-token.md)
- [Use G$ streaming](https://docs.gooddollar.org/for-developers/developer-guides/use-gusd-streaming.md)
- [Ethers V5/useDapp Context Setup](https://docs.gooddollar.org/for-developers/developer-guides/ethers-v5-usedapp-context-setup.md)
- [APIs & SDKs](https://docs.gooddollar.org/for-developers/apis-and-sdks.md)
- [UBI](https://docs.gooddollar.org/for-developers/apis-and-sdks/ubi.md): Every verified person is eligible to claim daily free UBI in the form of G$ tokens.
- [Claim UBI (Ethers v5/ React)](https://docs.gooddollar.org/for-developers/apis-and-sdks/ubi/claim-ubi-ethers-v5-react.md): Every verified person is eligible to claim daily free UBI in the form of G$ tokens.
- [Claim UBI (Viem/Wagmi)](https://docs.gooddollar.org/for-developers/apis-and-sdks/ubi/claim-ubi-viem-wagmi.md)
- [Claim UBI (Web-components)](https://docs.gooddollar.org/for-developers/apis-and-sdks/ubi/claim-ubi-web-components.md)
- [Sybil Resistance](https://docs.gooddollar.org/for-developers/apis-and-sdks/sybil-resistance.md): To be able to distribute free money while ensuring each unique person registers only once, we need to verify the liveness and uniqueness of people.
- [Identity (Ethers v5 / React)](https://docs.gooddollar.org/for-developers/apis-and-sdks/sybil-resistance/identity-ethers-v5-react.md): Follow below steps to integrate the Identity flow into your dapp!
- [Identity (Viem/Wagmi)](https://docs.gooddollar.org/for-developers/apis-and-sdks/sybil-resistance/identity-viem-wagmi.md)
- [Core Contracts](https://docs.gooddollar.org/for-developers/core-contracts.md)
- [GoodDollar](https://docs.gooddollar.org/for-developers/core-contracts/gooddollar.md): The GoodDollar G$ token follows the ERC-20 token standard and also supports ERC-677.
- [Identity](https://docs.gooddollar.org/for-developers/core-contracts/identity.md): The Identity contract controls addresses that are whitelisted to "Claim" UBI.
- [UBIScheme](https://docs.gooddollar.org/for-developers/core-contracts/ubischeme.md): Holds all the G$s that were transferred via bridge from the FundManager.
- [MentoReserve](https://docs.gooddollar.org/for-developers/core-contracts/mentoreserve.md): The contract manages collateral assets and reserve tokens for the Mento protocol exchange system.
- [MentoExpansionController](https://docs.gooddollar.org/for-developers/core-contracts/mentoexpansioncontroller.md): The contract controls how new GoodDollar tokens are minted and distributed for UBI.
- [MentoExchangeProvider](https://docs.gooddollar.org/for-developers/core-contracts/mentoexchangeprovider.md): The contract implements the core exchange mechanism for GoodDollar using a Bancor-style bonding curve.
- [MentoBroker](https://docs.gooddollar.org/for-developers/core-contracts/mentobroker.md): The contract executes token swaps between reserve assets and GoodDollar tokens through exchange providers.
- [Faucet](https://docs.gooddollar.org/for-developers/core-contracts/faucet.md): The contract is to provide functionality of topping the users with native tokens to pay transaction fees.
- [ContributionCalculation](https://docs.gooddollar.org/for-developers/core-contracts/contributioncalculation.md): Helper contract for calculating the exit contribution (i.e. when selling G$ back to the reserve).
- [OneTimePayments](https://docs.gooddollar.org/for-developers/core-contracts/onetimepayments.md): Payments on the GoodDollar wallet are done via payment links.
- [NameService](https://docs.gooddollar.org/for-developers/core-contracts/nameservice.md): Helper contract, basically simple name to address resolver.