> For the complete documentation index, see [llms.txt](https://docs.v2.like.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.v2.like.co/developer.md).

# Developer Guide

- [Developer Introduction](https://docs.v2.like.co/developer/introduction.md): We love open source
- [LikeCoin chain API](https://docs.v2.like.co/developer/likecoin-chain-api.md)
- [Cosmos concepts](https://docs.v2.like.co/developer/likecoin-chain-api/cosmos-concepts.md): Concepts before accessing LikeCoin chain
- [RPC/LCD API](https://docs.v2.like.co/developer/likecoin-chain-api/rpc-api.md)
- [ISCN API](https://docs.v2.like.co/developer/likecoin-chain-api/rpc-api/useful-iscn-api.md)
- [NFT API](https://docs.v2.like.co/developer/likecoin-chain-api/rpc-api/nft-api.md)
- [Setup local test node](https://docs.v2.like.co/developer/likecoin-chain-api/setup-local-test-node.md)
- [Sample](https://docs.v2.like.co/developer/likecoin-chain-api/sample.md): Usage sample of LikeCoin chain API
- [Javascript](https://docs.v2.like.co/developer/likecoin-chain-api/sample/javascript.md): Using Javascript/node.js to sign a transaction
- [CosmJS (Recommended)](https://docs.v2.like.co/developer/likecoin-chain-api/sample/cosmjs.md)
- [Keplr](https://docs.v2.like.co/developer/likecoin-chain-api/sample/cosmjs/keplr.md)
- [ISCN](https://docs.v2.like.co/developer/likecoin-chain-api/sample/cosmjs/iscn.md)
- [LikeCoin API](https://docs.v2.like.co/developer/likecoin-api.md): https://documenter.getpostman.com/view/6879252/SVzxZfwH?version=latest
- [Calling API](https://docs.v2.like.co/developer/likecoin-api/calling-api.md)
- [Authetication](https://docs.v2.like.co/developer/likecoin-api/authetication.md): How to obtain access token for authenticated API using OAuth 2.0
- [Reference](https://docs.v2.like.co/developer/likecoin-api/reference.md): List of API and references
- [LikeCoin button](https://docs.v2.like.co/developer/likecoin-button.md): https://github.com/likecoin/LikeCoinButton-integration
- [Widget & Iframe](https://docs.v2.like.co/developer/likecoin-button/iframe.md): WidgetEmbed LikeCoin button using \<iframe>
- [Javascript CDN](https://docs.v2.like.co/developer/likecoin-button/html.md): Embed LikeCoin button by just including \<script> in your website
- [Javascript SDK](https://docs.v2.like.co/developer/likecoin-button/js-sdk.md)
- [LIKE pay](https://docs.v2.like.co/developer/like-pay.md): Allow websites to accpet LIKE payment easily
- [Web Widget](https://docs.v2.like.co/developer/like-pay/web-widget.md): Accept LIKE payment using our web widget
- [Reference](https://docs.v2.like.co/developer/like-pay/web-widget/reference.md): LIKE pay web widget API Reference
- [Webhook](https://docs.v2.like.co/developer/like-pay/web-widget/webhook.md): Webhook notification for LIKE pay agent (\`via\`)
- [ISCN](https://docs.v2.like.co/developer/iscn.md)
- [Specification](https://docs.v2.like.co/developer/iscn/specification.md): https://iscn.io
- [Chain API](https://docs.v2.like.co/developer/iscn/chain-api.md)
- [JavaScript](https://docs.v2.like.co/developer/iscn/javascript.md)
- [iscn-js](https://docs.v2.like.co/developer/iscn/javascript/iscn-js.md): Javascript SDK for ISCN actions.
- [iscn-message-types](https://docs.v2.like.co/developer/iscn/javascript/iscn-message-types.md): Provides javascript/typescript protobuf message definition for ISCN message.
- [Web Widget](https://docs.v2.like.co/developer/iscn/web-widget.md)
- [ISCN Widget](https://docs.v2.like.co/developer/iscn/web-widget/iscn.md): Submit ISCN entry via like.co web widget
- [ISCN Widget Reference](https://docs.v2.like.co/developer/iscn/web-widget/iscn/reference.md): ISCN web widget API Reference
- [ISCN x Arweave Widget](https://docs.v2.like.co/developer/iscn/web-widget/iscn-ar.md): Submit ISCN entry via like.co web widget
- [ISCN-AR Widget Reference](https://docs.v2.like.co/developer/iscn/web-widget/iscn-ar/reference.md): ISCN AR web widget API Reference
- [Batch upload tool](https://docs.v2.like.co/developer/iscn/batch-upload-tool.md)
- [ISCN Badge](https://docs.v2.like.co/developer/iscn/iscn-badge.md): This page is showing how to use query string to change ISCN badge Looks in color and size.
- [ISCN IPFS plugin](https://docs.v2.like.co/developer/iscn/iscn-ipfs-plugin.md)
- [LikeCoin NFT](https://docs.v2.like.co/developer/likenft.md)
- [LikeCoin NFT Module Spec](https://docs.v2.like.co/developer/likenft/likecoin-nft-module-spec.md)
- [Metadata best practice](https://docs.v2.like.co/developer/likenft/metadata.md)
- [Writing NFT Spec](https://docs.v2.like.co/developer/likenft/writing-nft.md): Based on Metadata best practice
- [NFT Book Spec](https://docs.v2.like.co/developer/likenft/writing-nft-1.md): Based on Metadata best practice
- [NFT Portal](https://docs.v2.like.co/developer/likenft/nft-portal.md): Mint Writing NFT via friendly web UI in app.like.co
- [NFT Portal Reference](https://docs.v2.like.co/developer/likenft/nft-portal/nft-portal-reference.md): NFT Portal technical reference
- [API Reference](https://docs.v2.like.co/developer/likenft/api-reference.md)
- [likecoin-js](https://docs.v2.like.co/developer/likecoin-js.md): A all-in-one Javascript SDK for LikeCoin
- [Ecosystem Statistics Badge](https://docs.v2.like.co/developer/badge.md): Real time LikeCoin info display badges
- [Raise Proposal](https://docs.v2.like.co/developer/raise-proposal.md): Raise a proposal with LikeCoin chain daemon.


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