# dApp Developers - [JSON-RPC APIs](https://archive-docs.klaytn.foundation/content/dapp/json-rpc.md) - [API references](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references.md) - [eth](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/eth.md): eth namespace APIs. - [Caution](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/eth/caution.md): Cautions when using eth namespace apis in Klaytn. - [Account](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/eth/account.md) - [Block](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/eth/block.md) - [Transaction](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/eth/transaction.md) - [Config](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/eth/config.md) - [Filter](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/eth/filter.md) - [Gas](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/eth/gas.md) - [Miscellaneous](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/eth/misc.md) - [klay](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/klay.md): APIs related to accounts, blocks, transactions, and nodes. - [Account](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/klay/account.md) - [Block](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/klay/block.md) - [Transaction](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/klay/transaction.md) - [Working with Klaytn Transaction Types](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/klay/transaction/transaction-type-support.md) - [Configuration](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/klay/config.md) - [Filter](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/klay/filter.md) - [Gas](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/klay/gas.md) - [Miscellaneous](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/klay/misc.md) - [net](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/network.md): APIs used to query network configuration. - [debug](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/debug.md): APIs used to inspect and debug node state and blockchain data at run time. - [Logging](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/debug/logging.md) - [Profiling](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/debug/profile.md) - [Runtime Tracing](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/debug/go_trace.md) - [Runtime Debugging](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/debug/runtime.md) - [VM Tracing](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/debug/tracing.md) - [VM Standard Tracing](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/debug/standard_tracing.md) - [Blockchain Inspection](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/debug/blockchain.md) - [admin](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/admin.md): APIs to control Klaytn node. - [personal](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/personal.md): APIs to manage accounts and private keys in the node. - [txpool](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/txpool.md): APIs to inspect transaction pools in the node. - [governance](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/api-references/governance.md): APIs related to the Klaytn Governance. - [Service Chain API references](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/servicechain.md): Namespaces related to "Service Chain". - [mainbridge](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/servicechain/mainbridge.md): APIs related to main chain ENs connected with a service chain. - [subbridge](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/servicechain/subbridge.md): APIs related to service chain ENs. - [Transaction Error Codes](https://archive-docs.klaytn.foundation/content/dapp/json-rpc/transaction-error-codes.md) - [RPC Service Providers](https://archive-docs.klaytn.foundation/content/dapp/rpc-service.md) - [Public Endpoints](https://archive-docs.klaytn.foundation/content/dapp/rpc-service/public-en.md) - [SDK & Libraries for interacting with Klaytn Node](https://archive-docs.klaytn.foundation/content/dapp/sdk.md) - [caver-js](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js.md) - [Getting Started](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/getting-started.md) - [Sending a sample transaction](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/sending-transaction.md) - [API references](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references.md): Packages provided by caver-js. - [caver.account](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.account.md) - [caver.wallet](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.wallet.md) - [caver.wallet.keyring](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.wallet/keyring.md) - [caver.transaction](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.transaction.md) - [Basic](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.transaction/basic.md) - [Fee Delegation](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.transaction/fee-delegation.md) - [Partial Fee Delegation](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.transaction/partial-fee-delegation.md) - [caver.rpc](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.rpc.md) - [caver.rpc.klay](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.rpc/klay.md) - [caver.rpc.net](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.rpc/net.md) - [caver.rpc.governance](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.rpc/governance.md) - [caver.contract](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.contract.md) - [caver.abi](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.abi.md) - [caver.kct](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.kct.md): A caver-js package used to interact with a KCT. - [caver.kct.kip7](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.kct/kip7.md) - [caver.kct.kip17](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.kct/kip17.md) - [caver.kct.kip37](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.kct/kip37.md) - [caver.validator](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.validator.md) - [caver.utils](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.utils.md): caver-js utility APIs. - [caver.ipfs](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/api-references/caver.ipfs.md) - [caver-js ~v1.4.1](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1.md) - [Getting Started (~v1.4.1)](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/getting-started_1.4.1.md) - [API references](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references.md): Packages provided by caver-js. - [caver.klay](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay.md): A JavaScript wrapper to Klaytn APIs around the namespace 'klay'. - [Account](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/account.md) - [Block](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/block.md) - [Transaction](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/transaction.md) - [Legacy](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/transaction/sendtx_legacy.md) - [Value Transfer](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/transaction/sendtx_value_transfer.md) - [Value Transfer Memo](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/transaction/sendtx_value_transfer_memo.md) - [Account Update](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/transaction/sendtx_account_update.md) - [Smart Contract Deploy](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/transaction/sendtx_smart_contract_deploy.md) - [Smart Contract Execution](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/transaction/sendtx_smart_contract_execution.md) - [Cancel](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/transaction/sendtx_cancel.md) - [Configuration](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/config.md) - [Filter](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/filter.md) - [Miscellaneous](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay/misc.md) - [caver.klay.net](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay.net.md): A JavaScript wrapper to Klaytn APIs around the namespace 'net'. - [caver.klay.accounts](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay.accounts.md): caver-js APIs related to managing accounts. - [caver.klay.Contract](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay.contract.md): A caver-js object used to interact with a smart contract. - [caver.klay.KIP7](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay.kip7.md): A caver-js object used to interact with a smart contract for KIP7. - [caver.klay.KIP17](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay.kip17.md): A caver-js object used to interact with a smart contract for KIP17. - [caver.klay.abi](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.klay.abi.md): caver-js APIs related to ABI encoding and decoding. - [caver.utils (~v1.4.1)](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/api-references/caver.utils_1.4.1.md): caver-js utility APIs. - [Porting from web3.js](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-js/v1.4.1/porting-from-web3.js.md) - [caver-java](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-java.md) - [Getting Started](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-java/getting-started.md) - [caver-java ~v1.4.0](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-java/v1.4.0.md) - [Getting Started (~v1.4.0)](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-java/v1.4.0/getting-started_1.4.0.md) - [Porting from web3j](https://archive-docs.klaytn.foundation/content/dapp/sdk/caver-java/v1.4.0/porting-from-web3j.md) - [ethers.js](https://archive-docs.klaytn.foundation/content/dapp/sdk/ether-js.md) - [web3.js](https://archive-docs.klaytn.foundation/content/dapp/sdk/web3-js.md) - [Tutorials](https://archive-docs.klaytn.foundation/content/dapp/tutorials.md): This chapter contains practical dApp examples with complete source code and explanations. - [Klaytn Online Toolkit](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaytn-online-toolkit.md) - [Fee Delegation Example](https://archive-docs.klaytn.foundation/content/dapp/tutorials/fee-delegation-example.md) - [Count DApp](https://archive-docs.klaytn.foundation/content/dapp/tutorials/count-dapp.md) - [1. Environment Setup](https://archive-docs.klaytn.foundation/content/dapp/tutorials/count-dapp/1.-environment-setup.md) - [2. Clone Count DApp](https://archive-docs.klaytn.foundation/content/dapp/tutorials/count-dapp/2.-clone-count-dapp.md) - [3. Directory Structure](https://archive-docs.klaytn.foundation/content/dapp/tutorials/count-dapp/3.-directory-structure.md) - [4. Write Smart Contract](https://archive-docs.klaytn.foundation/content/dapp/tutorials/count-dapp/4.-write-smart-contract.md) - [5. Frontend Code Overview](https://archive-docs.klaytn.foundation/content/dapp/tutorials/count-dapp/5.-frontend-code-overview.md) - [5-1. Blocknumber Component](https://archive-docs.klaytn.foundation/content/dapp/tutorials/count-dapp/5.-frontend-code-overview/5-1.-blocknumber-component.md) - [5-2. Auth Component](https://archive-docs.klaytn.foundation/content/dapp/tutorials/count-dapp/5.-frontend-code-overview/5-2.-auth-component.md) - [5-3. Count Component](https://archive-docs.klaytn.foundation/content/dapp/tutorials/count-dapp/5.-frontend-code-overview/5-3.-count-component.md) - [6. Deploy Contract](https://archive-docs.klaytn.foundation/content/dapp/tutorials/count-dapp/6.-deploy-contract.md) - [7. Run App](https://archive-docs.klaytn.foundation/content/dapp/tutorials/count-dapp/7.-run-app.md) - [Klaystagram](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram.md) - [1. Environment Setup](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/1.-environment-setup.md) - [2. Clone Klaystagram DApp](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/2.-clone-klaystagram-dapp.md) - [3. Directory Structure](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/3.-directory-structure.md) - [4. Write Klaystagram Smart Contract](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/4.-write-klaystagram-smart-contract.md) - [5. Deploy Contract](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/5.-deploy-contract.md) - [6. Frontend Code Overview](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/6.-frontend-code-overview.md) - [7. FeedPage](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/7.-feedpage.md) - [7-1. Connect Contract to Frontend](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/7.-feedpage/7-1.-connect-contract-to-frontend.md) - [7-2. UploadPhoto Component](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/7.-feedpage/7-2.-uploadphoto-component.md) - [7-3. Feed Component](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/7.-feedpage/7-3.-feed-component.md) - [7-4. TransferOwnership Component](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/7.-feedpage/7-4.-transferownership-component.md) - [8. Run App](https://archive-docs.klaytn.foundation/content/dapp/tutorials/klaystagram/8.-run-app.md) - [Building a Buy Me a Coffee dApp](https://archive-docs.klaytn.foundation/content/dapp/tutorials/buy-me-a-coffee.md) - [1. Project Setup](https://archive-docs.klaytn.foundation/content/dapp/tutorials/buy-me-a-coffee/1.-project-setup.md) - [2. Creating a BMC Smart Contract](https://archive-docs.klaytn.foundation/content/dapp/tutorials/buy-me-a-coffee/2.-creating-bmc-contract.md) - [3. Testing the contract using scripts](https://archive-docs.klaytn.foundation/content/dapp/tutorials/buy-me-a-coffee/3.-testing-bmc-contract-using-scripts.md) - [4. Deploying BMC Smart contract](https://archive-docs.klaytn.foundation/content/dapp/tutorials/buy-me-a-coffee/4.-deploying-bmc-contract.md) - [5. Building the BMC Frontend with React and Web3Onboard](https://archive-docs.klaytn.foundation/content/dapp/tutorials/buy-me-a-coffee/5.-bmc-frontend-with-react-and-web3onboard.md) - [6. Deploying Frontend code on IPFS using Fleek](https://archive-docs.klaytn.foundation/content/dapp/tutorials/buy-me-a-coffee/6.-deploying-frontend-to-fleek.md) - [7. Conclusion](https://archive-docs.klaytn.foundation/content/dapp/tutorials/buy-me-a-coffee/7.-conclusion.md) - [Migrating Ethereum App to Klaytn](https://archive-docs.klaytn.foundation/content/dapp/tutorials/migrating-ethereum-app-to-klaytn.md) - [Connecting MetaMask](https://archive-docs.klaytn.foundation/content/dapp/tutorials/connecting-metamask.md) - [Connecting Remix](https://archive-docs.klaytn.foundation/content/dapp/tutorials/connecting-remix.md) - [Verifying Smart Contracts Using Block Explorers](https://archive-docs.klaytn.foundation/content/dapp/tutorials/verifying-contracts.md) - [Developer Tools](https://archive-docs.klaytn.foundation/content/dapp/developer-tools.md): This page contains the list of development tools to help you build Decentralized Applications on Klaytn. - [Wallets](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started.md) - [Kaikas](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/kaikas.md) - [Klaytn Wallet](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/klaytn-wallet.md) - [Klaytn Safe](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/klaytn-safe.md) - [Klaytn Safe Design](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/klaytn-safe/design.md) - [Create a Safe](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/klaytn-safe/create-a-safe.md) - [Add assets](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/klaytn-safe/add-assets.md) - [Send assets](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/klaytn-safe/send-assets.md) - [Contract Interaction](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/klaytn-safe/contract-interaction.md) - [Transaction Builder](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/klaytn-safe/tx-builder.md) - [Points to Note](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/klaytn-safe/points.md) - [Frequently Asked Questions](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/klaytn-safe/faqs.md) - [SafePal S1](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/safepal-s1.md) - [Wallet Libraries](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/wallet-libraries.md) - [Web3Auth](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/wallet-libraries/web3auth.md) - [Web3Modal](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/wallet-libraries/web3modal.md) - [Web3-Onboard](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/wallet-libraries/web3onboard.md) - [Particle Network](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started/wallet-libraries/particle.md) - [Oracles](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started-1.md) - [Orakl Network](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started-1/orakl-network.md) - [Witnet](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started-1/witnet.md) - [SupraOracles](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started-1/supraoracles.md) - [Indexers](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started-2.md) - [SubQuery](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started-2/subquery.md) - [Cross-chain](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started-3.md) - [LayerZero](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started-3/layerzero.md) - [Block Explorers](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started-4.md) - [Klaytnscope](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started-4/klaytnscope.md) - [Klaytn Contracts Wizard](https://archive-docs.klaytn.foundation/content/dapp/developer-tools/klaytn-contracts-wizard.md) --- # 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://archive-docs.klaytn.foundation/content/dapp.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.