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

# Clarity

- [Address Utilities](https://docs.stacks.co/cookbook/clarity/address-utilities.md)
- [Convert BTC to STX address](https://docs.stacks.co/cookbook/clarity/address-utilities/convert-btc-to-stx-address.md)
- [Convert string to principal](https://docs.stacks.co/cookbook/clarity/address-utilities/convert-string-to-principal.md)
- [Derive principal addresses between networks](https://docs.stacks.co/cookbook/clarity/address-utilities/derive-principal-addresses-between-networks.md)
- [Create a random burn address](https://docs.stacks.co/cookbook/clarity/address-utilities/create-a-random-burn-address.md)
- [Data Utility](https://docs.stacks.co/cookbook/clarity/data-utility.md)
- [Filter items from a list](https://docs.stacks.co/cookbook/clarity/data-utility/filter-items-from-a-list.md)
- [Check for duplicates](https://docs.stacks.co/cookbook/clarity/data-utility/check-for-duplicates.md)
- [Return an entry from a map](https://docs.stacks.co/cookbook/clarity/data-utility/return-an-entry-from-a-map.md)
- [Cryptography & Security](https://docs.stacks.co/cookbook/clarity/cryptography-and-security.md)
- [Create sha256 hash clarity](https://docs.stacks.co/cookbook/clarity/cryptography-and-security/create-sha256-hash-clarity.md)
- [Contract post-conditions](https://docs.stacks.co/cookbook/clarity/cryptography-and-security/contract-post-conditions.md)
- [Generate random number](https://docs.stacks.co/cookbook/clarity/cryptography-and-security/generate-random-number.md)
- [Helper function to restrict contract calls](https://docs.stacks.co/cookbook/clarity/cryptography-and-security/helper-function-to-restrict-contract-calls.md)
- [Example Contracts](https://docs.stacks.co/cookbook/clarity/example-contracts.md): How Clarity contracts look in practice
- [Megapont Ape Club NFT](https://docs.stacks.co/cookbook/clarity/example-contracts/megapont-ape-club-nft.md)
- [Smart Wallets](https://docs.stacks.co/cookbook/clarity/example-contracts/smart-wallets.md)
- [Proof of Transfer (PoX)](https://docs.stacks.co/cookbook/clarity/example-contracts/proof-of-transfer-pox.md)
- [Semi Fungible Token](https://docs.stacks.co/cookbook/clarity/example-contracts/semi-fungible-token.md)
- [Send Many](https://docs.stacks.co/cookbook/clarity/example-contracts/send-many.md)
- [ExecutorDAO Framework](https://docs.stacks.co/cookbook/clarity/example-contracts/executordao-framework.md)
- [NFT Marketplace](https://docs.stacks.co/cookbook/clarity/example-contracts/nft-marketplace.md)
- [Ordinals Swap](https://docs.stacks.co/cookbook/clarity/example-contracts/ordinals-swap.md)
- [DeFi Lending](https://docs.stacks.co/cookbook/clarity/example-contracts/defi-lending.md)
- [Non-Fungible token](https://docs.stacks.co/cookbook/clarity/example-contracts/non-fungible-token.md)
- [Fungible Token](https://docs.stacks.co/cookbook/clarity/example-contracts/fungible-token.md)
- [Counter](https://docs.stacks.co/cookbook/clarity/example-contracts/counter.md)


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