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Alpaca - Developer-first API for Stock, Options, Crypto Trading



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# API for Stock, Options, and Crypto Trading

Alpaca's easy to use APIs allow developers and businesses to trade algorithms, build apps and embed investing into their services.

Trade with algorithms, connect with apps, and build services with our easy to use APIs.

Sign up for Free





## A Unified Platform

All-Inclusive suite for investing, brokerage, custody and post-trade processing.

Trading

Integrations

Brokerage Infrastructure

Community

Start Trading Start Building

## Best in Class Platform 🥇

2022

Fintech 250 List 2022

Top Companies List 2022

Best Automated Trading Software 2023

Top Private Companies List 2023

Best API Solution 2024

Best API

## Simple Modern API

Leverage our highly flexible suite of Broker APIs, helping you build end-to-end embedded trading and investing products.

### Commission Free API

Building with the Alpaca API can make stock trading commission-free

### OAuth Integration

Exposing your API info is tired—use OAuth to keep your key private

### Alpaca Securities

Alpaca Securities LLC is a member of FINRA and SIPC

### Margin and Short Selling

A wide array of advanced investing and trading strategies are supported

### Testing Environment

We've got your back—test your work before deploying to production

### Inclusive API

SDKs are available in Python, .NET/C#, Go, Node, and more

!Commissions Disclosure

Try API

### Alpaca Securities

Alpaca Securities LLC is a member of Financial Industry Regulatory Authority, Inc. (FINRA). You can check the background of Alpaca Securities on FINRA's BrokerCheck. Alpaca Securities is also a member of SIPC - securities in your account are protected up to $500,000. For details, please visit www.sipc.org.

## Alpaca is Backed By

## Latest Product Launches

### Funding Wallets for Broker API

Allow your end-users to deposit and withdraw funds in their local currency using local rails for faster settlement. Furthermore, each of your end-users will receive a unique funding wallet number, ensuring precise allocation to brokerage accounts.

Documentation Read Blog

### Commission-free Options Trading

Trade multi-leg options for US-listed equities and ETFs. Fill orders, monitor your trading history, and access additional features. Now available to everyone on Trading API.

Documentation Learn More

### Local Currency Trading API For App Localization

Alpaca's Local Currency Trading API allows your customers to see the value of stock prices, trades, performance, and statements in their local currencies.

Documentation Read Blog

Left Right

We chose to partner with Alpaca for many reasons. Still, we want to highlight Alpaca's ability to differentiate as an API-first company and provide an unparalleled brokerage as a service to InvestSky. We appreciate the support we get from all Alpaca teams ranging from Sales to Customer Success. We also really appreciate how supportive Alpaca's leadership is towards partners." \- Turki Alshaikh, Co-Founder of Investsky

!Testimonials Disclosure

Alpaca has been a great business partner. One of the reasons we chose Alpaca is due to their Local Currency Trading API. We believe this offering will simplify the trading experience for Japanese investors by providing access to US stocks in local currency without having to convert to the US dollar at any point." \- Brian Yun, Co-Founder at Woodstock

!Testimonials Disclosure

Alpaca's Broker API has everything needed to build a full-fledged trading application out of the box. Building our backend infrastructure on top of Broker API was easier than expected, given their extensive documentation, ready-to-test sandbox environment, and professional support." \- Abdulrahman Al Kharafi, CEO of Zad App & Head of Fintech Securities House

!Testimonials Disclosure

Before Alpaca, companies like ours would likely have undergone the grueling, complex process to become a broker themselves, taking up a significant amount of time, dev resources, and legal resources. Alpaca is one of the most important companies in our stack, and has made it significantly easier for companies to bring their product to market." \- Som Mohapatra, CIO and Co-founder at Quantbase

!Testimonials Disclosure

Alpaca has been a great business partner. The Broker API team has been highly responsive and professional throughout our integration and launching journey. They have helped us significantly in decreasing time-to-market by having a well-documented process." \- Saleeh Alaqeel, Cofounder and COO at Abyan Capital

!Testimonials Disclosure

The testimonials, statements, and opinions presented on the website are applicable to the specific individuals. It is important to note that individual circumstances may vary, and may not be representative of the experience of others. There are no guarantees of future performance or success. The testimonials are voluntarily provided and are not paid, nor were they provided with free products, services or any other benefit in exchange for said statements.

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Alpaca http://alpaca.markets/

© 2025 Alpaca Securities LLC All rights reserved.
© 2025 Alpaca Crypto LLC All rights reserved.
© 2025 AlpacaDB, Inc. All rights reserved.

Securities brokerage services are provided by Alpaca Securities LLC ("Alpaca Securities"), member FINRA/SIPC, a wholly-owned subsidiary of AlpacaDB, Inc. Technology and services are offered by AlpacaDB, Inc.

Options trading is not suitable for all investors due to its inherent high risk, which can potentially result in significant losses. Please read Characteristics and Risks of Standardized Options before investing in options.

Cryptocurrency services are made available by Alpaca Crypto LLC ("Alpaca Crypto"), a FinCEN registered money services business (NMLS # 2160858), and a wholly-owned subsidiary of AlpacaDB, Inc. Alpaca Crypto is not a member of SIPC or FINRA. Cryptocurrencies are not stocks and your cryptocurrency investments are not protected by either FDIC or SIPC.

Cryptocurrency is highly speculative in nature, involves a high degree of risks, such as volatile market price swings, market manipulation, flash crashes, and cybersecurity risks. Cryptocurrency regulations are continuously evolving, and it is your responsibility to understand and abide by them. Cryptocurrency trading can lead to large, immediate and permanent loss of financial value. You should have appropriate knowledge and experience before engaging in cryptocurrency trading. For additional information, please click here.



# Disclosures

Brokerage services are provided by Alpaca Securities, member FINRA/SIPC, a wholly-owned subsidiary of AlpacaDB, Inc.

Technology and services are offered by AlpacaDB, Inc.

Brokerage services are provided to customers who can write automated investment code and self-direct their own investments. Alpaca brokerage services are only provided to customers who agree to electronically sign agreements and agree to receive messages, confirmations, and statements electronically. Is Alpaca right for me?

This is not an offer, solicitation of an offer, or advice to buy or sell securities or cryptocurrencies, or open a brokerage account or cryptocurrency account in any jurisdiction where Alpaca Securities or Alpaca Crypto respectively, are not registered or licensed, as applicable.

The Paper Trading API is offered by AlpacaDB, Inc. and does not require real money or permit a user to transact in real securities in the market. Providing use of the Paper Trading API is not an offer or solicitation to buy or sell securities, securities derivative or futures products of any kind, or any type of trading or investment advice, recommendation or strategy, given or in any manner endorsed by AlpacaDB, Inc. or any AlpacaDB, Inc. affiliate and the information made available through the Paper Trading API is not an offer or solicitation of any kind in any jurisdiction where AlpacaDB, Inc. or any AlpacaDB, Inc. affiliate (collectively, "Alpaca") is not authorized to do business.

You should know that the use or granting of any third party access to your account information or place transactions in your account at your direction is solely at your risk. Alpaca does not warrant against loss of use or any direct, indirect or consequential damages or losses to you caused by your assent, expressed or implied, to a third party accessing your account or information, including access provided through any other third party apps, systems, or sites.

Market prices, data and other information available through Alpaca are not warranted as to completeness or accuracy and are subject to change without notice. *System response and account access times may vary due to a variety of factors, including trading volumes, market conditions, system performance, and other factors.* A more complete description of the impact these factors may have can be found in our risks of automated trading systems section.

All investments involve risk and the past performance of a security, or financial product does not guarantee future results or returns. Keep in mind that while diversification may help spread risk it does not assure a profit, or protect against loss, in a down market. There is always the potential of losing money when you invest in securities, or other financial products. Investors should consider their investment objectives and risks carefully before investing.

There are risks unique to automated trading algorithms that you should know about and plan for. You should setup a method or system of continuous monitoring or alerting to let you know if there is a mechanical failure, such as connectivity issues, power loss, a computer crash, or system quirk. You should also monitor for instances where your automated trading system experiences anomalies that could result in errant, missing, or duplicated orders. A more complete description of these and other risks can be found in our FAQ section.

Conditional orders may have increased risk as a result of their reliance on trigger processing, market data, and other internal and external systems. Such orders are not sent to the market until specified conditions are met. During that time, issues such as system outages with downstream technologies or third parties may occur. Conditional orders triggering near the market close may fail to execute that day. Furthermore, our executing partner may impose controls on conditional orders to limit erroneous trades triggering downstream orders. Alpaca Securities may not always be made aware of such changes to external controls immediately, which may lead to some conditional orders not being executed. As such, it is important to monitor conditional orders for reasonability. Conditional orders are “Not Held” orders whose execution instructions are on a best efforts basis upon being triggered. Furthermore, conditional orders may be subject to the increased risks of stop orders and market orders outlined above. Given the increased potential risk of using conditional orders, the client agrees that Alpaca Securities cannot be held responsible for losses, damages, or missed opportunity costs associated with market data problems, systems issues, and user error, among other factors. By using conditional orders the client understands and accepts the risks outlined above. Alpaca Securities encourages leveraging the use of Paper accounts to become more comfortable with the intricacies associated with these orders.

ETFs can entail risks similar to direct stock ownership, including market, sector, or industry risks. Some ETFs may involve international risk, currency risk, commodity risk, and interest rate risk. Trading prices may not reflect the net asset value of the underlying securities.

All accounts are opened as limited purpose margin accounts. You should know that margin trading involves interest charges and risks, including the potential to lose more than deposited or the need to deposit additional collateral in a falling market. Before using margin, customers must determine whether this type of trading strategy is right for them given their specific investment objectives, experience, risk tolerance, and financial situation. For more information please see Alpaca's Margin Disclosure Statement and Margin Agreement. These disclosures contain information on Alpaca Securities's lending policies, interest charges, and the risks associated with margin accounts.

Any fee you pay is based on the specific transaction and not the value of your account. In general, we do not charge a commission for trades. However, certain arrangements with authorized business partners may preclude commission free trades by Alpaca Securities. If your account is established via an authorized business partner, please refer to the fee schedule provided through your authorized partner’s website or platform. Customers of Alpaca Securities should refer to the Alpaca Securities Brokerage Fee Schedule. Please ensure you review the fees and costs identified on any confirmations and statements you receive.

Cryptocurrency is highly speculative in nature, involves a high degree of risks, such as volatile market price swings, market manipulation, flash crashes, and cybersecurity risks. Cryptocurrency is not regulated or is lightly regulated in most countries. Cryptocurrency trading can lead to large, immediate and permanent loss of financial value. You should have appropriate knowledge and experience before engaging in cryptocurrency trading. For additional information please click here.

Cryptocurrency services are made available by Alpaca Crypto, a FinCEN registered money services business (NMLS # 2160858), and a wholly-owned subsidiary of AlpacaDB, Inc. Alpaca Crypto is not a member of SIPC or FINRA. Cryptocurrencies are not stocks and your cryptocurrency investments are not protected by either FDIC or SIPC. Please see the Disclosure Library for more information.

© 2025 Alpaca Securities LLC All rights reserved.

© 2025 Alpaca Crypto LLC All rights reserved.

© 2025 AlpacaDB, Inc. All rights reserved.

# Commissions Disclosure

At Alpaca Securities LLC, our mission is to provide general brokerage services for free. However, there are some services used by our customers that cannot be provided for free because there is a direct cost associated with those services, that is, the service is not shared among all of our clients. Even in those instances, Alpaca will strive to provide the service at the lowest possible price to ensure that our clients benefit from low costs and we can continue to offer those services.

Please view our Brokerage Fee Schedule for more information.

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