Fees and pricing
Solver-aligned pricing on Ophis-operated chains and transparent flat rates on hosted chains.
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The short version: on Optimism, Unichain, and Robinhood Chain, Ophis charges 1 bp plus 80% of reference-quote improvement on volatile pairs (50 bps cap), or 50% on stable pairs (20 bps cap). Hosted chains retain the existing flat rates.
| Path | Ophis-operated | CoW-hosted |
|---|---|---|
| Swap app | 1 bp + 80% improvement (50 bps cap); 50%/20 bps cap for stables | 10 bps retail; 1 bp stables |
| @ophis/sdk integrations | Same sovereign model | 5 bps partner; 1 bp stables |
| MCP server (keyless) | Same sovereign model | 5 bps |
| Intent API and MCP calls themselves | Free | Free |
What does Ophis charge?
On Optimism, Unichain, and Robinhood Chain, every path pays a 1 bp base. Ophis retains 80% of reference-quote improvement on volatile pairs, capped at 50 bps of volume, or 50% on stable pairs, capped at 20 bps. CoW-hosted chains retain 10 bps retail, 5 bps partner, and 1 bp stablecoin rates.
What is the all-in cost on each chain?
On Optimism, Unichain, and Robinhood Chain, the minimum is 1 bp and the maximum Ophis charge is 51 bps on volatile pairs or 21 bps on stable pairs. On CoW-hosted chains, CoW Protocol adds its own fees on top of Ophis's hosted flat fee.
Does Ophis take a cut of surplus?
On Optimism, Unichain, and Robinhood Chain, yes: 80% on volatile pairs or 50% on stable pairs, subject to the caps. The measurement is improvement over the backend reference quote, not the user's slippage limit. On CoW-hosted chains Ophis takes no additional improvement share.
What do integrators pay, and what can they charge?
Integrations pay the same 1 bp base plus capped improvement capture on sovereign chains. Hosted integrations retain the 5 bps base, reduced to 1 bp for stable pairs. Integrators can still charge an onboarded own-fee on top.
Are the APIs free?
Yes. The public Intent API and the MCP server are free to call. The Intent API is rate-limited to 30 requests per minute per IP; partner-tier rate limits are reviewed case by case.
Are there rebates?
Yes. Volume rebate tiers (10% to 50% by rolling 30-day volume) weight your share of a monthly WETH rebate pool, and a referral layer pays 8% or 12% of the net fee Ophis keeps, monthly in WETH, on-chain.
Worked example
On $100,000 of sovereign volatile volume with 20 bps of improvement, Ophis receives $10 base plus $160 of improvement capture: $170 total. On a stable pair with the same improvement, the stable capture is 10 bps, producing $110 total; the new 20 bps cap does not bind until improvement reaches 40 bps. Hosted-chain costs follow the flat schedule above.
Sources and detail
Chain-by-chain fee detail lives at docs.ophis.fi/fees, integrator terms at docs.ophis.fi/partners and business.ophis.fi, rebate mechanics at docs.ophis.fi/affiliate, and CoW Protocol's own fee schedule at docs.cow.fi. See also supported chains for which chains are Ophis-operated.