Developers
Build on Split. The SDK wraps quotes, gasless buys, and closes, so you can add leveraged options to any app with one signature per action.
Install
bash
npm install @splitmarkets/sdkThe shape of an integration
Every trade follows one pattern: quote, build calls, submit gasless.
quote(side, strike, size)
│ signed premium + bid + signature
▼
build calls ─▶ [ pull premium (EIP-3009), approve, buyN ]
│ (close: [ approve, sellN ])
▼
submit ─▶ gasless facilitator ─▶ one user signature, no ETH gas- Quote: fetch a signed quote for a side (
longorshort), strike, and size. The quote carries the premium, the bid, and the signature the pool verifies. - Build calls: the SDK assembles the batched calls, pull the premium (EIP-3009), approve, and
buyN(or approve andsellNto close). Auto-exercise enrollment is appended for calls. - Submit: relay the batch through the gasless facilitator. The user signs once and pays no ETH gas.
TIP
The same gasless functions power the production app, so your integration uses the same production execution path used by the Split app, not a parallel implementation.
Core concepts
| Concept | Note |
|---|---|
| Side | long is a call (WETH-collateralized), short is a put (USDC-collateralized) |
| N | the option token the user holds, what you buy and sell |
| seriesId | identifies a specific strike and expiry rung |
| premium / bid | premium is the entry cost (max loss), bid is the live close value |
| gasless | EIP-3009 signed USDC transfer plus account abstraction, one signature, no ETH |
Contracts and addresses
WARNING
Resolve live contract addresses from the app or SDK config rather than hardcoding. Pools and exercisers are versioned and chain specific. Verify any address in the app before sending funds.
- Chains: live on Base and Arbitrum. Auto-exercise is Base-only today (the Arbitrum exerciser is coming); on Arbitrum, close before expiry to realize a win.
- The settlement core is the subject of the formal verification work. See Research.