# Rondo

> Technical documentation for Rondo, escrowed regional stablecoin/USDT order markets on Kaia.

## Docs

- [Rondo protocol](https://docs.rondo.finance/index.md): Direct, escrowed JPYC, IDRX and IDRP orders against USDT on Kaia — with atomic settlement and oracle-aware pricing.
- [Use Rondo](https://docs.rondo.finance/quickstart.md): Choose the right side of the live book, size a fill, and understand every state that can disable settlement.
- [The two order kinds](https://docs.rondo.finance/protocol/orders.md): A ratio locked at creation, or no stored price at all — and what each one costs its maker.
- [Markets](https://docs.rondo.finance/protocol/markets.md): How JPYC, IDRX and IDRP trade against USDT as independent Rondo markets on Kaia.
- [Pricing](https://docs.rondo.finance/protocol/pricing.md): Three decimal systems in one expression, the two quote paths, and who really pays the fee.
- [Your edge](https://docs.rondo.finance/protocol/edge.md): The number that decides whether an order is worth taking, and why the raw deviation from the oracle price is not that number.
- [Filling an order](https://docs.rondo.finance/protocol/filling.md): fillOrder, the ladder of guards it walks, and why the taker names the output rather than the payment.
- [Order lifecycle](https://docs.rondo.finance/protocol/lifecycle.md): Every way an order ends, and exactly what still works when trading is paused or the feed goes down.
- [Topology & money map](https://docs.rondo.finance/protocol/topology.md): Who touches what, where funds actually sit, and the invariant that keeps the fee account away from escrow.
- [Security model](https://docs.rondo.finance/protocol/security.md): How Rondo protects escrow, atomic settlement and transaction bounds.
- [Deployments](https://docs.rondo.finance/reference/deployments.md): Rondo market contracts on Kaia mainnet, their token and oracle bindings, and current launch state.
- [Contract API](https://docs.rondo.finance/reference/api.md): The user and integration-facing EVM interface for Rondo markets.
- [ABI JSON](https://docs.rondo.finance/reference/abi-json.md): Copy-ready JSON ABIs for the deployed Rondo Swapper and Lens contracts.
- [The lens](https://docs.rondo.finance/reference/lens.md): Rondo Lens — atomic book reads and fill preflight checks in a separate read-only contract.
- [Events & errors](https://docs.rondo.finance/reference/events-errors.md): What an indexer can reconstruct, and the protocol-specific errors integrations should decode.
- [Configuration](https://docs.rondo.finance/reference/configuration.md): Every knob, its deployed default, the bound around it, and why that bound exists.
- [Integrate the contracts](https://docs.rondo.finance/build/contract-integration.md): A complete integration path for reading Rondo markets, quoting and filling orders, posting as a maker, and indexing settlement on Kaia.
- [Building an interface](https://docs.rondo.finance/build/frontend.md): What the contract cannot check for you, and therefore what your UI has to.