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Prime Brokerage and API Trading — Crypto Exchange Institutional Features — Prime Brokerage and API Trading
Institutional traders and prime brokers require features that retail exchanges do not offer: FIX protocol API, sub-account management, portfolio margin, and direct market access. FIX (Financial Information eXchange) is the industry standard protocol for institutional order management systems (OMS). Every major institut...
OMS (Institutional Trader) → FIX Gateway (TCP connection, persistent session) → Exchange FIX Engine (validates, normalizes FIX messages) → Internal API (translates to exchange's order format) → Matching Engine → FIX Drop Copy (execution reports back to OMS)
D (New Order Single): Place a new order. F (Order Cancel Request): Cancel existing order. G (Order Cancel/Replace Request): Modify existing order. 8 (Execution Report): Order acknowledgment, fill notification. 9 (Order Cancel Reject): Cancel rejection notification.
$40,000–$80,000 for a production FIX gateway. Requires FIX certification testing with institutional clients.
// Sub-account data model const subAccountSchema = { masterAccountId: String, // The prime broker's master account subAccountId: String, // Individual fund/strategy account subAccountName: String, // "Strategy Alpha", "Fund B", etc. balances: { BTC: Decimal, ETH: Decimal, USDC: Decimal, // ... other assets }, // Positi...
Independent balance tracking per sub-account. API keys scoped to individual sub-accounts. Consolidated master account reporting. Internal fund transfers between sub-accounts (no withdrawal/deposit cycle). Sub-account position limits independent of master limits. Unified settlement (net settlement across all sub-account...
Common integrations: The Graph, Alchemy/Infura, OpenZeppelin Defender, and popular wallet providers.
Clarify requirements, compliance needs, architecture risks, and launch goals.
Implement core contracts, integrations, product flows, tests, and deployment automation.
Run QA, prepare audit handoff, deploy infrastructure, and support production rollout.
FIX protocol: institutional traders will not trade >$100,000/day without it — they cannot integrate their OMS to a REST-only exchange. Sub-accounts: needed when your first prime broker client signs up (typically at $500K+ daily volume from a single firm). Portfolio margin: needed to compete for derivatives-focused institutional volume. Build in sequence: REST API → WebSocket → FIX → Sub-accounts → Portfolio margin.
Schedule a discovery call and receive a tailored scope and estimate. No commitment required.