> For the complete documentation index, see [llms.txt](https://tech.usual.money/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tech.usual.money/smart-contracts/protocol-contracts/usd0.md).

# USD0

<table data-card-size="large" data-view="cards"><thead><tr><th align="center"></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td align="center"><strong>USD0</strong> <strong>DAO Collateral Smart Contract</strong></td><td><a href="/smart-contracts/protocol-contracts/usd0/usd0-daocollateral.md">USD0 DaoCollateral</a></td><td data-object-fit="cover"><a href="https://1503334455-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FpUhQzPJGdJzuLTQ5sCym%2Fuploads%2Fs03nwUaWtx0ACaNQKxRX%2FCard%20Cover%2041.png?alt=media&amp;token=99184f18-f0bd-43c2-a680-60f8d304eff3">Card Cover 41.png</a></td></tr><tr><td align="center"><strong>Swapper Engine Smart Contract</strong></td><td><a href="/smart-contracts/protocol-contracts/usd0/usd0-swapper-engine.md">USD0 Swapper Engine</a></td><td data-object-fit="cover"><a href="https://1503334455-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FpUhQzPJGdJzuLTQ5sCym%2Fuploads%2FEAXcO5aCmFvNWZ0zLCW1%2FCard%20Cover%2054.png?alt=media&amp;token=9ac7d7ae-2286-4dca-8f0c-0b4adc72bc3a">Card Cover 54.png</a></td></tr><tr><td align="center"><strong>USD0 Distribution Smart Contract</strong></td><td><a href="/smart-contracts/protocol-contracts/usd0/usd0-revenue-distribution-module.md">USD0 Revenue Distribution Module</a></td><td><a href="https://1503334455-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FpUhQzPJGdJzuLTQ5sCym%2Fuploads%2FWePR3Lq3b0QzmvocsimR%2FCard%20Cover%2011.png?alt=media&amp;token=f0fe83b7-5889-488f-80e6-fb25a9ee9f96">Card Cover 11.png</a></td></tr></tbody></table>