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@blackcube/extended-sdk

v0.8.0

Published

TypeScript SDK for the Extended exchange (ex-X10, perpetuals DEX on Starknet/StarkEx): REST v1, WebSocket, SNIP-12 Stark order signing

Readme

@blackcube/extended-sdk

SDK TypeScript pour Extended (ex-X10) — DEX de perpétuels sur Starknet / StarkEx.

🚧 En construction sur le moule des SDK DEX Blackcube (Hyperliquid / Aster / Pacifica / Lighter). Voir docs/blackcube/PLAYBOOK-SDK.md (racine Web3) pour le modèle, et doc/API-RESEARCH.md pour la cartographie de l'API Extended.

Tout passe par la classe Extended

import { Extended } from '@blackcube/extended-sdk';

// Lectures publiques (X-Api-Key + User-Agent requis)
const dex = new Extended({ desk: { apiKey: '…', network: 'mainnet' } }, { default: 'desk' });
await dex.perp().getPairs();
await dex.perp().getCandles({ name: 'BTC-USD', interval: '1h', limit: 100 });

// Trading (signature Stark sur le settlement de l'ordre)
await dex.perp().place({ name: 'BTC-USD', side: 'buy', type: 'limit', size: '0.001', price: '30000', tif: 'gtc' });
await dex.account().getPositions();

Surface

  • Commun (portable, identique aux autres SDK) : perp() / account() / transfers() / ws(). Extended est perp-only (absent : spot()).
  • Natif (spécifique Extended) : native.<capacité>() (sous-comptes, vault de rendement, builder codes, …).

Spécificités Extended

  • Auth : X-Api-Key (lecture) + signature Stark SNIP-12 sur le settlement des écritures (ordres/transferts/retraits). User-Agent obligatoire (REST et WS). Onboarding EIP-712 → keypair L2 Stark.
  • Signature : hash StarkEx perpetual (get_order_msg_hash) ; scaling entier via l2Config de /info/markets. Signer JS pur (@scure/starknet) validé sur testnet réel (2026-06-01) : reproduit fast_stark_crypto au bit près et accepté par le serveur (ordre placé/accepté/annulé). Signer WASM officiel disponible en secours.
  • WebSocket : souscription par path (1 channel = 1 connexion, SNAPSHOT/DELTA). Kill-switch via auto-cancel.
  • Marchés : symbole hyphené BTC-USD.

Licence

BSD-3-Clause — Blackcube.