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

# Developer Guide

Napier protocol is released under the `BUSL` license. All code is open source and available at: [github.com/napierfi/napier-v2-public](https://github.com/napierfi).

Once deployed, the protocol is designed to operate **indefinitely**, contingent on the continued existence of the Ethereum blockchain.

The Napier Stack provides tools and interfaces for users, developers, and researchers to:

* Build on top of the Napier protocol
* Access on-chain and protocol data
* Integrate markets, strategies, and analytics

### Offchain

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-cover data-type="image">Cover image</th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><h4>Napier API</h4><p>Access data on Napier users, markets and more.</p></td><td><a href="/files/z3ny0YpfqQrBJ4EcUr3q">/files/z3ny0YpfqQrBJ4EcUr3q</a></td><td><a href="/pages/WQpN4NMBMXysV1jr0HVb">/pages/WQpN4NMBMXysV1jr0HVb</a></td></tr><tr><td><h4>Napier SDK (Soon)</h4><p>A suite of tool to interact with the Napier ecocystem</p></td><td><a href="/files/z3ny0YpfqQrBJ4EcUr3q">/files/z3ny0YpfqQrBJ4EcUr3q</a></td><td></td></tr><tr><td><h4>Napier Subgraphs (Soon)</h4><p>Retrieve onchain data from Napier contract</p></td><td><a href="/files/vkqssV8syGNFvFwWncQj">/files/vkqssV8syGNFvFwWncQj</a></td><td></td></tr></tbody></table>

### Onchain

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-cover data-type="image">Cover image</th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><h4>Deployment</h4><p>All deployed Napier contracts.</p></td><td><a href="/files/z3ny0YpfqQrBJ4EcUr3q">/files/z3ny0YpfqQrBJ4EcUr3q</a></td><td><a href="/pages/lt4EE7NnI1OELVa5WsW7">/pages/lt4EE7NnI1OELVa5WsW7</a></td></tr></tbody></table>


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