> For the complete documentation index, see [llms.txt](https://docs.hatsprotocol.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hatsprotocol.xyz/for-developers.md). # For Developers - [Hats Protocol, for Developers](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers.md) - [Hat Properties](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/hat-properties.md): The atomic unit of Hats Protocol is a hat. - [Wearing a Hat](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/wearing-a-hat.md): The wearer of a given hat is assigned the responsibilities, authorities, and accountabilities associated with the hat. - [Hat Admins & Hatter Contracts](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/hat-admins-and-hatter-contracts.md) - [Hats Trees](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/hats-trees.md) - [Hat IDs](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/hat-ids.md) - [Linking Hats Trees](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/linking-hats-trees.md) - [Eligibility Modules](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/eligibility-modules.md) - [Toggle Modules](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/toggle-modules.md) - [Hat Mutability and Editing](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/hat-mutability-and-editing.md) - [Creating Hats](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/creating-hats.md) - [Minting Hats](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/minting-hats.md) - [Transfering Hats](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/transfering-hats.md) - [Renouncing Hats](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/renouncing-hats.md) - [Batch Actions](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/batch-actions.md) - [Hat Image URIs](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/hat-image-uris.md) - [ERC1155 Compatibility](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/erc1155-compatibility.md) - [Supported Chains](https://docs.hatsprotocol.xyz/for-developers/hats-protocol-for-developers/supported-chains.md) - [v1 Protocol Spec](https://docs.hatsprotocol.xyz/for-developers/v1-protocol-spec.md) - [Hats.sol](https://docs.hatsprotocol.xyz/for-developers/v1-protocol-spec/hats.sol.md) - [HatsEvents.sol](https://docs.hatsprotocol.xyz/for-developers/v1-protocol-spec/hatsevents.sol.md) - [HatsErrors.sol](https://docs.hatsprotocol.xyz/for-developers/v1-protocol-spec/hatserrors.sol.md) - [HatsIdUtilities.sol](https://docs.hatsprotocol.xyz/for-developers/v1-protocol-spec/hatsidutilities.sol.md) - [Interfaces](https://docs.hatsprotocol.xyz/for-developers/v1-protocol-spec/interfaces.md) - [IHats.sol](https://docs.hatsprotocol.xyz/for-developers/v1-protocol-spec/interfaces/ihats.sol.md) - [IHatsIdUtilities.sol](https://docs.hatsprotocol.xyz/for-developers/v1-protocol-spec/interfaces/ihatsidutilities.sol.md) - [IHatsEligibility.sol](https://docs.hatsprotocol.xyz/for-developers/v1-protocol-spec/interfaces/ihatseligibility.sol.md) - [IHatsToggle.sol](https://docs.hatsprotocol.xyz/for-developers/v1-protocol-spec/interfaces/ihatstoggle.sol.md) - [v1 SDK](https://docs.hatsprotocol.xyz/for-developers/v1-sdk.md) - [Core](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/core.md) - [Getting Started](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/core/getting-started.md) - [Onchain Reads](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/core/onchain-reads.md) - [Onchain Writes](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/core/onchain-writes.md) - [Multicall](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/core/multicall.md) - [Claiming Hats](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/core/claiming-hats.md) - [Utilities](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/core/hat-and-tree-id-utilities.md) - [Subgraph](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/subgraph.md) - [Getting Started](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/subgraph/getting-started.md) - [Fetching Hats](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/subgraph/fetching-hats.md) - [Fetching Wearers](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/subgraph/fetching-wearers.md) - [Fetching Trees](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/subgraph/fetching-trees.md) - [Misc](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/subgraph/misc.md) - [Types](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/subgraph/types.md) - [Hat Details](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/hat-details.md) - [Getting Started](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/hat-details/getting-started.md) - [Usage](https://docs.hatsprotocol.xyz/for-developers/v1-sdk/hat-details/usage.md) - [v1 Subgraphs](https://docs.hatsprotocol.xyz/for-developers/v1-subgraphs.md) - [Hats Modules](https://docs.hatsprotocol.xyz/for-developers/hats-modules.md) - [Modules SDK](https://docs.hatsprotocol.xyz/for-developers/hats-modules/modules-sdk.md) - [Getting Started](https://docs.hatsprotocol.xyz/for-developers/hats-modules/modules-sdk/getting-started.md) - [Get Available Modules](https://docs.hatsprotocol.xyz/for-developers/hats-modules/modules-sdk/get-available-modules.md) - [Create New Instance/s](https://docs.hatsprotocol.xyz/for-developers/hats-modules/modules-sdk/create-new-instance-s.md) - [Composing Modules](https://docs.hatsprotocol.xyz/for-developers/hats-modules/modules-sdk/composing-modules.md) - [Interact With Instances](https://docs.hatsprotocol.xyz/for-developers/hats-modules/modules-sdk/interact-with-instances.md) - [Utilities](https://docs.hatsprotocol.xyz/for-developers/hats-modules/modules-sdk/utilities.md) - [Types](https://docs.hatsprotocol.xyz/for-developers/hats-modules/modules-sdk/types.md) - [Building Hats Modules](https://docs.hatsprotocol.xyz/for-developers/hats-modules/building-hats-modules.md) - [Inside a Hats Module](https://docs.hatsprotocol.xyz/for-developers/hats-modules/building-hats-modules/inside-a-hats-module.md) - [Immutable Arguments](https://docs.hatsprotocol.xyz/for-developers/hats-modules/building-hats-modules/inside-a-hats-module/immutable-arguments.md) - [Module Setup](https://docs.hatsprotocol.xyz/for-developers/hats-modules/building-hats-modules/inside-a-hats-module/module-setup.md) - [Versioning](https://docs.hatsprotocol.xyz/for-developers/hats-modules/building-hats-modules/inside-a-hats-module/versioning.md) - [Creating New Modules](https://docs.hatsprotocol.xyz/for-developers/hats-modules/building-hats-modules/creating-new-modules.md) - [How Module Instances Are Deployed](https://docs.hatsprotocol.xyz/for-developers/hats-modules/building-hats-modules/how-module-instances-are-deployed.md) - [Modules Registry](https://docs.hatsprotocol.xyz/for-developers/hats-modules/building-hats-modules/modules-registry.md) - [About Module Chains](https://docs.hatsprotocol.xyz/for-developers/hats-modules/building-hats-modules/about-module-chains.md) - [Hats Signer Gate v2](https://docs.hatsprotocol.xyz/for-developers/hats-signer-gate-v2.md): This page describes the second version of Hats Signer Gate. - [Hats Signer Gate SDK](https://docs.hatsprotocol.xyz/for-developers/hats-signer-gate-sdk.md) - [Getting Started](https://docs.hatsprotocol.xyz/for-developers/hats-signer-gate-sdk/getting-started.md) - [Creating New Instances](https://docs.hatsprotocol.xyz/for-developers/hats-signer-gate-sdk/creating-new-instances.md) - [Hats Signer Gate](https://docs.hatsprotocol.xyz/for-developers/hats-signer-gate-sdk/hats-signer-gate.md) - [Multi Hats Signer Gate](https://docs.hatsprotocol.xyz/for-developers/hats-signer-gate-sdk/multi-hats-signer-gate.md) - [HSG & MHSG Handlers](https://docs.hatsprotocol.xyz/for-developers/hats-signer-gate-sdk/hsg-and-mhsg-handlers.md) - [Hats Account SDK](https://docs.hatsprotocol.xyz/for-developers/hats-account-sdk.md) - [1 of N Hats Account](https://docs.hatsprotocol.xyz/for-developers/hats-account-sdk/1-of-n-hats-account.md) - [Getting Started](https://docs.hatsprotocol.xyz/for-developers/hats-account-sdk/1-of-n-hats-account/getting-started.md) - [Creating New Instances](https://docs.hatsprotocol.xyz/for-developers/hats-account-sdk/1-of-n-hats-account/creating-new-instances.md) - [Executing From An Instance](https://docs.hatsprotocol.xyz/for-developers/hats-account-sdk/1-of-n-hats-account/executing-from-an-instance.md) - [Constants](https://docs.hatsprotocol.xyz/for-developers/hats-account-sdk/1-of-n-hats-account/constants.md) - [Types](https://docs.hatsprotocol.xyz/for-developers/hats-account-sdk/1-of-n-hats-account/types.md) - [Hats Security Audits](https://docs.hatsprotocol.xyz/for-developers/hats-security-audits.md)