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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 by design. Orders settle through a batch auction where trades clear at a uniform price, mitigating front-running and sandwiching. This is a mechanism-level defense, not an absolute guarantee against every adversarial condition.
  • 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.
  • Transparent, chain-aware fees. Every supported chain charges a 1 bp base plus 80% of reference-quote improvement on volatile pairs (99 bps cap), or 50% on stable pairs (20 bps cap). On CoW-hosted chains, CoW Protocol's own fees apply on top.
  • 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 & rebatesAll-chain price-improvement pricing, hosted upstream fees, and rebates.
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.