ophisExecution infrastructure for desks & integrators.
Non-custodial intent routing with MEV-protected, uniform-price settlement on CoW Protocol's audited GPv2 contracts. Every supported chain pays 1 bp plus capped price-improvement capture; hosted integrations additionally pay CoW Protocol fees upstream. Charge your own fee on top and Ophis takes 0% of that markup.
Three properties desks care about, enforced at the protocol layer.
Mechanism-level guarantees, not marketing. Each is implemented at the contract or settlement layer Ophis inherits from CoW Protocol, so it holds regardless of the interface.
Non-custodial by construction
Your tokens never leave your wallet until on-chain settlement. The operator cannot move, freeze, or recover funds. No counterparty custody risk, no recoverable hot wallet.
MEV-protected settlement
Orders execute inside a batch auction at a single uniform clearing price. Front-running and sandwich attacks are designed out, with no priority-gas auction to lose. Inherited from CoW Protocol's GPv2 mechanism.
Audit-inherited contracts
Settlement runs on CoW Protocol's audited GPv2 contracts, with the upstream audit reports published in CoW Protocol's contracts repository. Ophis-specific solver wiring and the AllowList contract were reviewed with Trail of Bits' Slither and Echidna fuzzing, GitHub CodeQL, and multi-agent code review.
Charge your own fee. Ophis takes 0% of it.
Ophis publishes its terms. On every supported chain, integrations pay a 1 bp base plus 80% of reference-quote improvement on volatile pairs (99 bps cap), or 50% on stable pairs (20 bps cap). Hosted integrations additionally pay CoW Protocol fees upstream. Using the SDK or manual appData, you can still add your own fee and Ophis takes 0% of that markup.
Your fee line, on-chain
For an ERC-20 order, the appData partnerFee field accepts an array: you stack
your own fee entry (your recipient, within the aggregate cap) next to the Ophis base.
Ophis takes 0% of your fee; the protocol charge is separate. On
Optimism and Unichain your own-fee is paid to your recipient monthly in WETH from the
Ophis Safe once you are onboarded. Robinhood own-fee payout is not yet guaranteed and is
reported with non-guaranteed accruals until its payout lane is enabled. On CoW-hosted chains it pays through CoW's weekly
distribution under CoW's terms. Native-ETH orders use the eth-flow helper; add your own
fee via a manual appData build.
Finite trade-reward pilot
Ophis has prepared a 150 USDG product experiment: 105 winning tickets, one per eligible wallet, for verified $100+ Ophis swaps made after the campaign starts. Wallet age and wallet balance are not requirements. Claims have no deadline and Ophis sponsors the Robinhood Chain transaction. The pilot is not active until the distributor address is published and funded.
Make your token the cheapest safe trade
For ecosystem and token launches, Ophis can run a boost: we step aside on the economics so your pair becomes the most competitive MEV-protected route available, while you or your chain fund the token-side rewards. Ophis brings the rails and stands as the named venue. Scope is bespoke per launch; contact us.
Ophis takes 0% of your $8,000 markup. On an operated chain, the separate Ophis charge is 1 bp plus capped price-improvement capture. You receive your markup on the CoW-hosted chains today, paid out under CoW's terms; on Optimism and Unichain it is paid to you monthly in WETH from the sovereign chain's Safe once you are onboarded and we enable it. Robinhood payout is not guaranteed until its dedicated payout lane is enabled.
For reference, MetaMask Swaps charges 0.875%.
| Tier | Referred volume | Share |
|---|---|---|
| Self-serve | Capped at $1M/month | 8% |
| Partner (by contact) | Uncapped | 12% |
The referral share is calculated on the verified base fee Ophis keeps from the flow you refer, and paid monthly in WETH, on-chain. It stacks with your own fee line: you keep your markup in full and earn the referral share on the base.
Payouts on Optimism and Unichain
On the chains Ophis operates, your recipient address is added to the settlement backend's fee-recipient allowlist after verification, then your own-fee is metered per settled trade and paid to your recipient monthly in WETH from the sovereign chain's Ophis Safe, with Ophis taking 0% of it. Execution is a 2-of-3 Safe signature. The payout runs once your recipient is onboarded (allowlisted) and we have enabled and funded it; amounts are USD-valued from routed volume, not exact per-token restitution. The 1 bp sovereign base and capped price-improvement policy remain separate from the third-party own-fee.
Payouts on CoW-hosted chains
This is where a third-party own-fee is chargeable today. Stacked fee entries are accepted and charged by CoW's production orderbooks, verified against live quotes in July 2026. Payouts flow through CoW Protocol's weekly partner-fee distribution under CoW's terms, which include a service fee on partner fees (25% by default) and a 0.001 WETH minimum. Whether that service fee applies to a stacked non-Ophis recipient, and the end-to-end payout of that recipient, are still being verified, so do not assume the full own-fee reaches you until we confirm it with your recipient address.
13 EVM chains, including Robinhood Chain, plus Solana & Bitcoin destinations.
EVM source via the CoW Protocol orderbook. Solana and Bitcoin destinations from EVM source via NEAR Intents, with no second wallet required.
Sepolia testnet is available for integration testing; this view lists production chains only.
Three ways to put Ophis in front of users.
All three settle through CoW Protocol's MEV-protected batch auction. Choose by how much of the interface you want to own, and by whether you want to charge your own fee on the flow you send.
Embed the widget
Drop the Ophis swap form into your app with the themed @ophis/widget-react
wrapper, which pins the Ophis host and applies the Ophis default appCode, or the upstream
@cowprotocol/widget-react pointed at swap.ophis.fi. With either, pass your own
appCode so orders are attributed to you rather than the Ophis default. Same
MEV-protected, batch-auction settlement, in your branding. See
docs.ophis.fi/widget.
Build with the SDK
Call Ophis from your bot, agent, or backend with the dependency-free
@ophis/sdk across 13 chains, including Robinhood Chain and native ETH. The SDK path pays the
chain-specific Ophis rate, carries your own fee entry on ERC-20 orders within the
190 bps hosted aggregate cap and 90 bps per-partner ceiling, no Ophis cut), and carries your referral code for the 8% or
12% share on the flow you send.
Direct use
Point operators at swap.ophis.fi for immediate, no-code access. Wallet
connect via MetaMask, WalletConnect v2, Coinbase Wallet, Safe, or any EIP-1193 provider.
Nothing to build.
Public Intent API. Partner tiers on request.
The public Intent API needs no auth and no key, useful for prototyping and low-volume automation. Higher rate limits and partner-tier endpoints are reviewed case by case.
| Endpoint | Method | Auth | Rate limit | Status |
|---|---|---|---|---|
/api/intent | POST | None | 30 / min / IP | Live |
/api/intent | POST | API key (partner) | Higher limits for partners (contact us) | Planned |
| CoW orderbook API | HTTP | None | Upstream-defined | Live |
Full reference at docs.ophis.fi. Public-tier limits suit low and medium-volume operators; for higher throughput or partner-tier access, reach out and quotas are reviewed case by case.
Security and review posture.
Settlement runs on CoW Protocol's audited GPv2 contracts. The Ophis-specific routing and authentication components are reviewed with the tooling below, and external review and a bug bounty are listed here as they go live.
Upstream contract audits
The GPv2 settlement contracts are CoW Protocol's audited code. The upstream audit reports are public in CoW Protocol's contracts repository (github.com/cowprotocol/contracts).
Ophis application reviews
Ophis-specific solver wiring, the AllowList authentication contract, and partner-fee handling were reviewed with Trail of Bits' Slither static analysis and Echidna property fuzzing, GitHub CodeQL, and multi-agent code-review passes. Findings and responses are tracked in commit history.
Ongoing security work
Additional external review and a formal bug bounty are on the roadmap and will be listed here as they go live. To discuss a security disclosure in the meantime, reach out.
Public, partner, or institutional access.
Four engagement shapes, from open public access to institutional contracts, each scoped to what it delivers. Where a shape is bespoke, it says so and names the path: contact us.
Public best-effort
Open access to the web UI and public Intent API. GitHub issues and email answered within one business day. No formal SLA; downtime, RPC outages, or upstream protocol issues may affect availability.
Partner-tier support
Direct Telegram or email channel, higher API rate limits, integration assistance. Reviewed case by case for material-volume routing through Ophis. Not a public tier; contact us with your use case and target volume.
OTC routing partnership
Custom solver-set composition, dedicated execution lanes, post-trade reporting. Requires a formal partnership contract; the scope is bespoke. Contact us to discuss fit.
Contracting path
The interface is operated independently and is not a regulated financial-services entity. Formal terms, uptime commitments, indemnification, and liability are handled per a written contract; full operator and entity details on request.
What Ophis is, and what it is not.
The boundaries of the service, stated up front for integration planning.
What Ophis is
A non-custodial interface to the CoW Protocol settlement layer, with a plain-English intent parser, a partner program that returns a share of trading revenue, and cross-chain destination support via NEAR Intents. Operated independently and open-source under GPL-3.0.
What Ophis is not
A regulated investment firm, a custodian, a guaranteed-execution venue, an ISO-certified provider, an exchange, or a market maker. Execution depends on solver competition and upstream protocol availability. We do not promise outcomes we cannot enforce on-chain.
Questions desks ask first.
Are you a regulated financial-services entity?
No. Ophis is operated independently and provides a non-custodial software interface to permissionless on-chain protocols. It does not take custody of funds, execute discretionary trades, or hold a regulated financial-services license. For formal contractual arrangements, full operator and entity details are provided on request via the contact below.
How does Ophis price its service, and is execution competitive?
The rates are published. On Optimism, Unichain, and Robinhood Chain, integrations pay a 1 bp base plus 80% of reference-quote improvement on volatile pairs, capped at 99 bps of volume, or 50% on stable pairs, capped at 20 bps. CoW-hosted integrations use the same 1 bp Ophis base, plus CoW Protocol's separate upstream fees. Execution is benchmarked against leading aggregators, with the additional protection of MEV-safe, uniform-price batch settlement that public mempool routes cannot offer.
Using the SDK or a manual appData build, you charge your own fee on top of ERC-20
orders and Ophis takes 0% of it: the order's appData partnerFee field accepts an
array, so you stack your own entry (your recipient address and rate: up to 90 bps under
the registered-partner ceiling and 190 bps hosted aggregate cap)
next to the Ophis base entry, and Ophis takes
0% of your markup. Set your own rate to 80 bps on $1,000,000 of monthly volume and Ophis
takes 0% of your $8,000 markup; Ophis's chain-specific protocol charge is separate.
You receive that markup on the CoW-hosted chains today (under CoW terms); on the
sovereign chains Optimism and Unichain it is paid to you monthly in WETH from the
sovereign chain's Safe once you are onboarded and we enable it. For reference, MetaMask Swaps charges 0.875%. A
third-party own-fee is chargeable today on the CoW-hosted chains, where it pays out
through CoW Protocol's weekly partner distribution under CoW's terms and we are
completing an end-to-end payout check for stacked recipients, so do not assume the full
own-fee reaches you until confirmed. On Optimism and Unichain the own-fee is charged into
settlement and swept to the Ophis Safe, then paid back to your recipient monthly in WETH
from that Safe (Ophis takes 0% of it) once your recipient is onboarded (allowlisted) and
we enable and fund the payout for it. A referral layer
pays 8% of the verified base fee Ophis keeps (self-serve, referred volume capped at $1M/month) or
12% (partner tier, uncapped, contact us), paid monthly in WETH, on-chain. Separately,
active traders earn the documented pooled volume-tier WETH rebates; the finite 150 USDG
trade-reward pilot remains inactive until its distributor is published and funded.
Where are integrator own-fees guaranteed for payout?
Ophis-operated own-fee payout is currently guaranteed on Optimism and Unichain once the recipient is onboarded and its payout lane is enabled. Robinhood accrual remains non-guaranteed until its dedicated payout lane exists. CoW-hosted payouts follow CoW Protocol's terms and service fee.
Can I get a custom rate limit?
Yes, partner-tier rate limits are reviewed case by case. The public Intent API allows 30 requests/min/IP, adequate for low and medium-volume operators. For higher throughput, reach out with a brief description of your use case and target volume, and we respond within one business day.
How do I integrate?
Three paths, detailed above: (1) embed the themed widget with your own appCode, (2)
build with the dependency-free @ophis/sdk from your bot, agent, or backend
(this is the path that earns the partner revenue share), or (3) point operators at
swap.ophis.fi for direct, no-code use. Documentation
at docs.ophis.fi.
What happens if a solver fails or the upstream protocol has an outage?
Solver competition handles single-solver failures automatically: your order is settled by whichever solver wins the batch. If the underlying CoW Protocol orderbook is degraded (rare but possible), Ophis surfaces an explicit error instead of routing through a degraded venue. Unsettled orders incur no Ophis or CoW settlement fee, though network gas may still apply to token approvals or other wallet actions you signed first.
Do you have references or case studies?
We list specific partner integrations here only after a signed agreement exists. If you would like to be a named reference partner, mention it in your first email.
Start the conversation.
A response within one business day on substantive inquiries. If a competitive, MEV-protected venue where you charge your own fee alongside transparent protocol pricing fits your desk, the conversation is short.
Contact us →