# Reiy Finance > Intent-based trading protocol on Sui with off-chain coordination and certificate-verified settlement. ## Docs - [About Reiy](https://docs.reiy.finance/about.md): Who we are, what Reiy is, and why intent-based trading matters. - [Fees](https://docs.reiy.finance/concepts/fees.md): Protocol fee structure, parameters, and tiers. - [How Reiy Works](https://docs.reiy.finance/concepts/how-reiy-works.md): End-to-end explanation of intents, coordination, solving, settlement, indexing, and operations. - [Concepts](https://docs.reiy.finance/concepts/overview.md): Core concepts used across Reiy Finance. - [Scoring and Ranking](https://docs.reiy.finance/concepts/scoring-ranking.md): How quotes are ranked and solutions are scored. - [Reiy Finance](https://docs.reiy.finance/index.md): Intent-based trading on Sui with off-chain coordination and certificate-verified settlement. - [The Problem](https://docs.reiy.finance/problem.md): Why intent-based trading solves what existing on-chain trading gets wrong. - [Quickstart](https://docs.reiy.finance/quickstart.md): Start with the recommended Reiy reading path. - [Fisherman Integration](https://docs.reiy.finance/solvers/fisherman-api.md): Solver endpoint contract, request/response schemas, and validation rules. - [Join as a Solver](https://docs.reiy.finance/solvers/join.md): What a solver needs to connect to Reiy and compete for settlement. - [Solver Overview](https://docs.reiy.finance/solvers/overview.md): How solvers participate in Reiy auctions. - [Solver Settlement](https://docs.reiy.finance/solvers/settlement.md): How winning solvers settle certificates on-chain. - [Fees and Safety](https://docs.reiy.finance/user-guide/fees-and-safety.md): Your protections, protocol fees, and safety expectations. - [Use Reiy](https://docs.reiy.finance/user-guide/get-started.md): How you use Reiy intent trading. - [Submitting Intents](https://docs.reiy.finance/user-guide/intents.md): How you express trades in Reiy. - [Settlement](https://docs.reiy.finance/user-guide/settlement.md): What happens after a solver wins.