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Ophis

Ophis is an intent-based DEX aggregator. You describe a swap in plain English, "swap 100 USDC for ETH on Base", and a competitive solver auction fills it at the best price. The trade settles on-chain with MEV protection built in, and you sign every order with your own wallet.

Ophis is a fork of CoW Protocol's frontend with an added natural-language intent-parsing layer. The full source is at github.com/ophis-fi/ophis.

swap 100 USDC for ETH on Base
        │
        ▼  parse intent  →  sign order  →  solver auction  →  settle

Core principles​

  • Intent-based, not router-based. You sign your desired outcome; solvers compete on how to deliver it.
  • MEV-protected. Orders settle through a batch auction where every trade clears at one uniform price. Sandwich attacks and front-running are structurally absent, not best-effort.
  • Self-custodial. Ophis never holds funds. Every order is signed by your wallet (EIP-712 or ERC-1271) and executed by an authorized solver from the allowlisted solver set.
  • Flat, transparent fee. A flat 0.10% (10 bps) fee on trade volume applies to every trade. Example: swap 1,000 USDC and the fee is 0.10%, or 1 USDC. No tiers, no surprises.
  • Open. The full frontend, intent-parser proxy, and infra runbooks are public.

What's in these docs​

SectionWhat you'll find
Getting startedMake your first swap; how the three-step flow works; supported networks.
How it worksIntent lifecycle, batch auctions, the parser proxy, and settlement.
Fees & rebatesThe flat 0.10% (10 bps) fee model and how rebates accrue.
Affiliate programShare a referral code, earn 8% of the net fee on every trade your referrals route.
Intent APIThe public POST /api/intent endpoint, parse English into a structured order.
AI agent integrationWire the intent API into LangChain, AutoGPT, or your own agent.
Security & auditsCustody model, settlement contracts, and audit posture.
FAQCommon questions about fees, networks, MEV, and custody.