Agent-first brokerage infrastructure
Access data, execute trades, build products, and automate financial operations — through one modern API built for agents, traders, builders, and businesses.
TRUSTED BY MILLIONS OF TRADERS AND HUNDREDS OF FINANCIAL INSTITUTIONS
Build and trade with Alpaca
Broker API
Infrastructure for modern finance
Launch and scale a brokerage on self-clearing institutional-grade infrastructure. We run the ledger, clearing, settlement, and custody behind the scenes, so you can focus on your product and your customers.
Institutional-grade infrastructure
Build on the same self-clearing infrastructure that powers institutions. As a member of the DTCC, FICC, and OCC, we own the rails end to end.
Unified trading & execution
From retail-friendly fractional shares to institutional-grade bracket orders, our API provides the sophisticated trading logic required to power the world’s most advanced financial apps.
We do the heavy lifting
Ledgering, clearing, settlement, reconciliation, regulatory reporting—the hard parts of running a broker-dealer are handled. We abstract the operational complexity behind a single API.
Built-in revenue and retention
From day-one execution to long-term monetization, our infrastructure gives you the modular building blocks to launch, scale, and profit.
Trading API
The API for the modern quant
Trade, backtest, and automate strategies with a modern API. The same endpoints that power paper and live trading are agent-native — drop our official MCPs into Claude, ChatGPT, or any agent stack.
Asset types
Trade stocks, ETFs, equity and index options, and crypto from one account.
Paper trade
Test up to 3 strategies with the same API, endpoints, and order logic as live trading. Validate your approach against market conditions, then flip to live with no code changes.
Market data
Real-time and historical market data included with every account. Snapshots, bars, quotes, and trades via REST or WebSocket.
Institutional grade
Route market, limit, stop, stop-limit, trailing stop, and bracket orders with the precision advanced strategies demand. Submit single legs or multi-leg options strategies in a single call, and manage complex positions entirely through code.
Numbers we’ll back up
1.5ms
Order processing
99.99%
Uptime since January 2026
600k+
Daily orders self-cleared
The only brokerage platform built like a developer tool
Most brokerages bolt an API onto legacy rails. We built the rails to be programmable: Self-clearing infrastructure exposed through a modern REST API and FIX surface.
We spent a decade turning finance’s black boxes into clean, programmable layers. Once a system is that legible, you don’t need a developer to operate it. An agent can.
Expand what your platform can offer
US stocks & ETFs
11,000+ US stocks and ETFs available 24/5, with fractional shares from just $1.
Options
Single- and multi-leg equity and index options, up to Level 3.
Crypto
30+ coins with secure MPC custody and 24/7 markets — same API as equities.
Fixed income
US Treasuries and corporate bonds, with best-price execution.
IPO
US IPOs, notional-based conditional buy orders, and API based participation.
Global stocks
Expand into global markets — starting with European equities via Xetra. Coming Soon: Hong Kong, London, Saudi, Korea, and Paris
Market data
Real-time and historical bars, quotes, and trades across every asset class.
Fully paid lending
Earn interest on fully paid shares while holding positions.
High-yield cash
Sweep idle balances into FDIC-insured accounts to earn yield.
Trusted by those building the future of finance
“Before Alpaca, integrating with a broker would have required a significantly higher amount of dev resources and time. Alpaca’s technology has significantly reduced how cumbersome of a process it is.”
Benjamin Rollert
CEO and Co-Founder, Composer
“Working with Alpaca allows us to tokenize US stocks and ETFs with the speed, accessibility, and programmability of blockchain for these global investors.”
Ian De Bode
Chief Strategy Officer, Ondo Finance
“There are service providers that tell you, this is what we have, take it or leave it. Not Alpaca. They listen. They understand our region. They’re helping us offer the best possible products to our clients.”
Abdullah Alotaibi
Co-Founder & Deputy CEO, ZAD
“Our partnership with Alpaca has been crucial in launching our Shariah-compliant trading solutions. Their reliable infrastructure and continuous feature pace have been instrumental to our success.”
Saleh Alaqeel
Co-Founder, Abyan Capital
Built on regulated brokerage infrastructure
Self-clearing
Regulated & protected
Secure & private by design
Digital asset licensing and registration
Financial infrastructure, done right
More than an API endpoint. Data, trading, clearing, custody, and developer tools come together in one platform, so you go from idea to production faster.