Developers

Contracts

Every live contract on Robinhood Chain, with addresses and parameters read on chain: Contracts.

The app reads the current pools from its market registry:

GET https://split.markets/api/markets

Each row has symbol, disabled, the pool address in flex2, and quoteApiUrl. Pools can be replaced, so resolve addresses from the registry rather than hardcoding them.

Quotes

Split's pricer signs a two-way EIP-712 quote per band. The pool verifies it on chain.

GET <quoteApiUrl>/flex2-quote?pool=<pool>&vault=<band>&side=call

The response includes askPerN, bidPerN, validUntil, nonce, signature, spot, IV, greeks and the model inputs. Quote format and contract entry points: For market makers.

Trading a band

Action	Function
Buy Up	buyCall(seriesId, qty, maxCost, quote, sig)
Buy Down	buyDown(seriesId, qty, maxCost, quote, sig)
Sell back	sellCall / sellDown(seriesId, qty, minProceeds, quote, sig)
Settle a round	closeEpoch() on the pool, after maturity plus the settle delay
Claim	claimNAndWithdraw(amount, to) (Up) or claimPAndWithdraw(amount, to) (Down) on the band's vault

Expect inventory and alloc cap reverts when the pool is full. If you show a multiple, show the cap with it.

SDK

@splitmarkets/sdk (0.3.0) wraps quotes, gasless buys and closes for the physical ETH options on Base and Arbitrum. It does not cover the Robinhood Chain cash-settled markets.

Proofs

The physical settlement core is verified in Lean 4: split-fv. See Verification.