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

# Fundamentals

- [$AGIO the token](https://agio-docs.gitbook.io/agio-docs/fundamentals/usdagio-the-token.md): Value accrual for $AGIO
- [Value accrual for $Agio holders](https://agio-docs.gitbook.io/agio-docs/fundamentals/usdagio-the-token/value-accrual-for-usdagio-holders.md)
- [Staking $AGIO to earn protocol fees in USD or ETH with a yield redirection mechanism](https://agio-docs.gitbook.io/agio-docs/fundamentals/usdagio-the-token/value-accrual-for-usdagio-holders/staking-usdagio-to-earn-protocol-fees-in-usd-or-eth-with-a-yield-redirection-mechanism.md)
- [Sudden total claim](https://agio-docs.gitbook.io/agio-docs/fundamentals/usdagio-the-token/value-accrual-for-usdagio-holders/sudden-total-claim.md)
- [Shielding pools](https://agio-docs.gitbook.io/agio-docs/fundamentals/usdagio-the-token/value-accrual-for-usdagio-holders/shielding-pools.md)