# 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="https://4277771176-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGPkrMXT982thgzhBdzF8%2Fuploads%2FMq4RbT9hfhGq4V8x8k8C%2Fimage%20(1).avif?alt=media&#x26;token=73d35f19-a440-42c8-9d1c-e54ea0ddde93">image (1).avif</a></td><td><a href="developer-guide/napier-api">napier-api</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="https://4277771176-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGPkrMXT982thgzhBdzF8%2Fuploads%2FMq4RbT9hfhGq4V8x8k8C%2Fimage%20(1).avif?alt=media&#x26;token=73d35f19-a440-42c8-9d1c-e54ea0ddde93">image (1).avif</a></td><td></td></tr><tr><td><h4>Napier Subgraphs (Soon)</h4><p>Retrieve onchain data from Napier contract</p></td><td><a href="https://4277771176-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGPkrMXT982thgzhBdzF8%2Fuploads%2FeFH5A3KuYx6rBaffl9CI%2F1500x500.jpg?alt=media&#x26;token=600112e9-9c2d-47c2-8b00-ee4f84ec6db1">1500x500.jpg</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="https://4277771176-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FGPkrMXT982thgzhBdzF8%2Fuploads%2FMq4RbT9hfhGq4V8x8k8C%2Fimage%20(1).avif?alt=media&#x26;token=73d35f19-a440-42c8-9d1c-e54ea0ddde93">image (1).avif</a></td><td><a href="developer-guide/deployment">deployment</a></td></tr></tbody></table>