Your next move starts here

MEV-protected swaps.
On your terms.

Ophis is an intent-based DEX aggregator for MEV-protected swaps. Trade supported stablecoins and tokenized assets with your own wallet, or integrate through MCP, SDK, and API.

Swap now How it works

From intent
to settlement.

Tap, click or press Space to pause

DEX liquidity → competing solvers → Ophis batch auction → crosschain receipt.

USDC → SOLSigned

Build on Ophis

Keep your fee. We settle it on-chain. Standard-policy swaps use a 1 bp base plus capped improvement capture; hosted paths add upstream CoW fees. Arc has a separate release configuration. See the current pricing.

Partner terms Talk to us

Product

One place. Your next swap.

Choose where to pay from and where funds should land. Supported assets and live quotes determine each route; external-source swaps need a deposit and refund address.

Ethereum · same-chain settlement

Swap between supported Ethereum assets, with the receiving token delivered to your wallet. Review the quote and spending limit before you sign.

ETH

USDC

See all supported chains

Across networks

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Ethereum

BNB

Base

Arbitrum

Polygon

Avalanche

Linea

Plasma

Ink

Gnosis

Optimism

Unichain

Robinhood

Arc

Solana

Bitcoin

Monad

Hyperliquid

X Layer

Sui

Tron

Starknet

Zcash

How it works

From choice to confirmation.

A short flow that keeps the amount, the route, and the approval in view at every step.

01
Choose amount and destination

Choose what to send and what to receive. For a cross-chain swap, add an address on the destination network.
02
Review route and limit

Check the estimated receive amount, fees, and spending limit together. Edit your trade before moving on.
03
Sign in your wallet

Review the approval request and confirm the swap in your wallet. Follow its progress through settlement.

Start a swap

Markets and integrations

Built for assets that move.

Stablecoins Route stablecoin swaps Compare supported stablecoin routes on Base, Avalanche, Ink, Robinhood Chain, and the rest of the Ophis network. Tokenized assets Trade new onchain markets Explore Robinhood Chain Stock Tokens, Coinbase Tokenized Stocks on Base, and supported real-world assets. Robinhood Chain Open the live market Use canonical-asset checks, corporate-action context, and MEV-protected batch settlement before signing. Agents and builders Integrate without an API key Connect through the hosted MCP server, the public Intent API, or the dependency-free Ophis SDK.

Aggregated liquidity

More venues. Better routing.

Ophis is solver-driven. Solvers compare configured AMMs and DEX aggregators for your chain and token pair. You sign a bounded order; the available routes and executable price depend on current liquidity.

Uniswap

Curve

Balancer

PancakeSwap

SushiSwap

Velodrome

Aerodrome

QuickSwap

Fluid

DODO

LFJ

KyberSwap

UP33

Ekubo

OKX

RamsesX

1inch

Dexalot

Native

Pharaoh

Solvers select from the venues available for your chain and token pair.

Trade tonight.

Turn a sentence into structured swap fields with the Intent API. Then use MCP, or combine @ophis/sdk helpers with @cowprotocol/cow-sdk to quote, build and submit, signing in your own wallet. Try the parser with JavaScript, Rust, or curl.

# Parse a natural-language swap intent
curl -X POST https://swap.ophis.fi/api/intent \
  -H "Content-Type: application/json" \
  -d '{
    "text": "swap 100 USDC for ETH on Optimism"
  }'

# Successful response is wrapped in { ok, data }:
# {
#   "ok": true,
#   "data": {
#     "intent": "swap",
#     "entities": [
#       { "type": "amount",    "value": "100",     "raw": "100",     "start": 5,  "end": 8 },
#       { "type": "sellToken", "value": "USDC",    "raw": "USDC",    "start": 9,  "end": 13 },
#       { "type": "buyToken",  "value": "ETH",     "raw": "ETH",     "start": 18, "end": 21 },
#       { "type": "chain",     "value": "optimism","raw": "Optimism","start": 25, "end": 33 }
#     ]
#   }
# }

Built for real flow.

MEV protection

Offchain orders and batch auctions mitigate common MEV risks. Signed limits bound execution.

Volume-tier rebates

Qualifying agents and DAOs earn volume rebates on indexed chains, including Arc.

Agent-safety SDK

Receiver-pin checks, chain-id validation, partner-fee config: guardrails out of the box.

Developers

Build with Ophis. Keep your identity.

Bring swaps into your own product, with tools for integration and a clear view of settlement.

From integration to execution

Explore the SDK and integration guides. Use the explorer to follow orders and inspect settlement details.

Read the integration guides Open the transaction explorer Open the app

Every trade has a story

An order is more than a confirmation. See its status, the assets exchanged, and where it settled.

Keep the details close, from your first quote to the final receipt.

@ophis/sdk

Ship integrations in an afternoon.

Correct orderbook hosts, per-chain signing domains, and agent-safety guards: everything an integrator needs to ship without footguns.

npm i @ophis/sdk Get the SDK on GitHub

Or give an agent the whole toolset, keyless: claude mcp add --transport http ophis https://mcp.ophis.fi/mcp Config for Cursor, Claude Desktop, VS Code, and OpenAI

JavaScript

import {
  getOphisOrderbookUrl,
  getOphisOrderDomain,
  assertReceiverIsOwner,
} from '@ophis/sdk'

// The correct orderbook host per chain: Optimism is self-hosted,
// not api.cow.fi; the wrong host silently bypasses Ophis.
const orderbook = getOphisOrderbookUrl(/* chainId */ 10)

// The EIP-712 signing domain with the right per-chain verifying
// contract (cow-sdk's default is wrong on the Ophis-operated chains).
const domain = getOphisOrderDomain(10)

// Pin the receiver to the owner before signing; an unpinned
// receiver is the #1 drain vector for an automated signer.
assertReceiverIsOwner(owner, order.receiver)

Built with the tools and partners that earned our trust.

Forked from CoW Protocol's settlement stack. Reviewed with Trail of Bits' open-source security tooling. Powered by Aleph Cloud compute. Cross-chain routing via NEAR Intents and Across.

CoW Protocol

Settlement stack we forked.

Aleph Cloud

Decentralized compute infra.

Across

Cross-chain transfers between EVM networks.

Trail of Bits

Security review tooling (Slither, Echidna).

NEAR Intents

Routing to supported destination chains.

Questions

Asked plainly.

What is Ophis?

Ophis is an intent-based, MEV-protected DEX aggregator for agents and tokenized markets. Traders can route supported stablecoins, Stock Tokens, tokenized stocks, and other onchain assets; builders can integrate through MCP, SDK, or API. Ophis batch-settles on supported EVM chains, with additional NEAR sources and destinations including Solana, Bitcoin, Monad, Hyperliquid, X Layer, Sui, Tron, Starknet, and Zcash. External-source swaps use a deposit flow in the standalone app. It is non-custodial and a CoW Protocol fork.

What does Ophis charge?

The standard batch-auction schedule charges a 1 bp base fee. Ophis retains 80% of reference-quote improvement on volatile pairs, capped at 99 bps of volume, or 50% on stablecoin pairs, capped at 20 bps. CoW-hosted chains additionally apply CoW Protocol upstream fees. Bridge costs and wallet transaction gas are separate. The public Intent API and MCP server are free.

Which chains does Ophis support?

The app covers 14 EVM chains, with Optimism, Unichain, Robinhood Chain, and Arc as its operated networks. SDK v0.4.3 and the hosted MCP server include Arc. The standalone app also supports Solana, Bitcoin, Monad, Hyperliquid, X Layer, Sui, Tron, Starknet, and Zcash as NEAR sources and destinations where assets and quotes permit. External-source swaps use a deposit and refund address; SDK/MCP order builders remain scoped to EVM orderbooks.

How is Ophis different from CoW Swap?

Ophis is a CoW Protocol fork with its own operated deployments, a public MCP server, Intent API and agent-safety SDK. Agents must resolve the supported per-chain settlement domain through the SDK or MCP before signing. SDK v0.4.3 and the hosted MCP server include Arc with its own orderbook and signing domain.

Is MEV protection guaranteed?

Batch-auction orders settle through CoW Protocol, which are designed to protect trades from MEV such as front-running and sandwiching by settling at a uniform clearing price per token pair. An order can never be settled below its signed limit price. Batch-auction settlement mitigates MEV by design; it is not an absolute guarantee against all adversarial conditions.

Who controls the keys, and is Ophis custodial?

Signing keys stay with the trader or agent. Standard signed ERC-20 orders keep funds in the wallet until settlement. Native-token orders and bridge routes can require onchain transactions and deposits, with gas and separate recovery rules. Always review what your wallet authorizes.

What is the Ophis MCP server?

The Ophis MCP server at mcp.ophis.fi is a Streamable-HTTP Model Context Protocol server that lets AI agents trade. It exposes tools including parse_intent, get_quote, build_order, submit_order, lookup_tier, and list_chains. It is public, unauthenticated, and keyless: it never holds keys or signs, so the agent signs with its own key.

How does an agent swap on Ophis?

An agent parses a natural-language intent, gets a best-execution quote, and builds a bounded EIP-712 order with the receiver pinned to the owner using the @ophis/sdk or the MCP build_order tool. It signs the order locally with its own key, then submits the pre-signed order to the Ophis orderbook or via the MCP submit_order tool. The agent can also call the public Intent API at POST /api/intent, rate-limited to 30 requests per minute per IP.

Your next move. On your terms.

Choose your assets. Check your limits. Take it from there.

Swap now Read the docs