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Sign up at https://app.lux.financial. Sandbox keys are issued immediately. Production keys require completing KYB. See the Onboarding guide for a full walkthrough.

Public markets (stocks, fixed income, commodities, forex), private markets (privates, pre-IPO), and digital markets (crypto). Full asset coverage and venue list are documented under Trading.

Market, limit (GTC/IOC/FOK/DAY), stop, stop-limit, bracket, and algorithmic orders including TWAP, VWAP, POV, and iceberg. See Execution for routing and algo specs.

Institutional partners connect via FIX 5.0 SP2 with CompID + password. FIX and the ZAP binary wire cost less per message than REST, but all three reach the same book and none is reserved for a class of partner. Contact [email protected] for session credentials.

Limits are flat: the same ceiling applies to every account, and no tier raises it. REST is metered per client address and a WebSocket connection carries its own message limit. If a limit is in your way, the answer is another connection, not a different standing.

Crypto settles T+0 on-chain. US equities settle T+1. Forex settles T+2. Privates/pre-IPO settle on closing. Full settlement-rail map is in the Trading doc.

Multi-jurisdiction KYC/AML with sanctions (OFAC/EU/UK/UN) screening, PEP checks, travel-rule (FATF-compliant), SAR/CTR filing, and Reg SHO / Reg T / Reg NMS controls on relevant venues.

Every REST endpoint is exposed over Model Context Protocol. AI agents authenticate with scoped JWTs, stream quotes over WebSocket, and submit orders with the same compliance pipeline as human traders.