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

# Developer API

- [Architecture](https://docs.arbor.finance/developer-api/architecture.md)
- [Bond](https://docs.arbor.finance/developer-api/bond.md): A custom ERC20 token that can be used to issue bonds.The contract handles issuance, payment, conversion, and redemption.
- [BondFactory](https://docs.arbor.finance/developer-api/bondfactory.md): This factory contract issues new bond contracts.