@wagrlabs/sdk

TypeScript SDK for the WAGR prediction market standard on Solana.

npm i @wagrlabs/sdk

What is in here

import { WagrClient, WAGR_PROGRAM_ID, lmsr, oracle } from "@wagrlabs/sdk";

• WagrClient -- read / write client for the Anchor program. Wallet adapter agnostic.
• lmsr -- Hanson (2003) LMSR pricing helpers (lmsrCost, lmsrPrice, lmsrBuyQuote, lmsrSellQuote, lmsrMaxLoss, lmsrPriceVector). Numerically stable logSumExp.
• oracle -- UMA-style optimistic resolution state machine + multi-source consensus aggregator.
• WAGR_PROGRAM_ID -- the Anchor program id (devnet today, mainnet pending).

Example

import { lmsr } from "@wagrlabs/sdk";

// A binary YES/NO market with liquidity b = 1000 and no shares sold yet.
const qs = [0, 0];
const b = 1000;

console.log(lmsr.lmsrPriceVector(qs, b));   // [0.5, 0.5]
console.log(lmsr.lmsrBuyQuote(qs, b, 0, 100)); // cost to buy 100 YES shares
console.log(lmsr.lmsrMaxLoss(b, 2));        // worst-case AMM loss

Status

• Anchor program: live on Solana devnet at GreSDUbtzBpDRgCYo9sXGZbFDM3HXFQWTdeAacF8HDEc. Mainnet pending.
• This SDK: live on npm. The LMSR + oracle helpers are pure logic and work without a wallet.
• Repo: https://github.com/wagr-labs/wagr
• Site: https://wagr.fi

License

Apache 2.0.