Alpaca Broker API - Modern Infrastructure for Stock Investing

Fractional & Notional Stocks

We offer extended hours trading for fractional, notional and whole shares via a set of developer-centric APIs for start-ups, enterprises, brokerages, and more to access the US capital markets.

Developer-First API

Alpaca's API-first crypto and stock platform is built from the ground up with a modern infrastructure, real-time event-driven architecture, and delivers scalable low latency processing.

20+ Crypto Coins

Build your own crypto trading app with Broker API. Unlock new revenue opportunities and enable your end-users to trade more than 20 popular crypto coins such as Bitcoin, Shiba Inu, Dogecoin, and more.

Embed Crypto and Stock Solutions with Broker API

Alpaca Broker API allows you to seamlessly embed crypto and stock trading into your app with ease. Depending on your platform's unique strategy, add crypto then securities or vice versa, or choose to focus on one solution.

Crypto

Try For Free

Instant access to 20+ coins
Available in select U.S states, US territories, & select international jurisdictions
Unlock a new revenue stream with crypto
24/7/365 crypto trading
Access to real-time crypto market data
Secure crypto custody solutions

Stocks

Try For Free

Thousands of U.S equities
Fractional & notional trading
Full extended hours trading
Access to real-time stock market data
Flexible minimum trade amounts
Access to exchanged traded and OTC ADRs

Performance and Scale are in Our DNA

Broker API offers a modern architecture, support for real-time events, and access to battle-tested technology that powers some of the most demanding algorithmic traders in the world.

Scalability

Our platform is built on dynamic cutting-edge technology combined with seamless product velocity that ensures your product is built for scale.

Real-Time Event-Driven Architecture

In order for you to build a reactive and responsive system, our APIs are centered around a real-time event-driven architecture.

Order Processing

We deliver a reliable order management system. Alpaca's OMS v2 makes order processing 100x faster and consistently under 1.5 ms.

Building Blocks for Your Specific Needs

We help make it possible for you to build great products by providing the tools, expertise, flexibility, and support to be as successful as possible.

Get API Keys

Account

Seamless and flexible account opening features ranging from KYC as a service, instant account opening, and bulk account opening.

Parameters

Attribute

Notes

contact

Contact information about the user

identity

KYC information about the user

disclosures

Required disclosures about the user

documents

Any documents that need to be uploaded (eg. passport, visa, …)

trusted_contact

The contact information of a trusted contact to the user in case account recovery is needed.

Read Docs

Journal

Reward users with stock or crypto, offer cash gifting, referral programs or integrate other strategies to grow your user base.

Parameters

Attribute

Notes

The journal ID

to_account

The account ID that received the journal - account_status must equal to ACTIVE

from_account

The account ID that initiates the journal - account_status must equal to ACTIVE or CLOSED

entry_type

ENUM: JNLC or JNLS

status

The status of the journal

settle_date

Date string in “%Y-%m-%d” format

system_date

Date string in “%Y-%m-%d” format

net_amount

In the case of JNLC - the total cash amount journaled

description

Description of the journal

Read Docs

Trading

Enable trading functionality for your end-users, from long, short, fractional to complex order types.

Parameters

Attribute

Notes

asset_id

Asset ID

symbol

Asset symbol

exchange

Exchange name of the asset

asset_class

Asset class name

avg_entry_price

Average entry of the position

qty

The number of shares

side

long

Read Docs

Documents

View, download, and create custom-branded documents such as monthly statements, trade confirmations, tax forms, and more.

Parameters

Attribute

Notes

The UUID of the document

name

The title of the document (if applicable)

type

account_statement, trade_confirmation, or tax_statement

sub_type

ENUM: either empty string "", 1099-Comp 1042-S, or 480.6

date

format: “2020-01-01”

Read Docs

Events

Receive real-time updates on trades, fund flows and improve your back-office operations by replaying past events via Server-Sent-Events (SSE).

Parameters

Attribute

Notes

account_id

UUID

account_number

Human readable

Timestamp of event

event_id

monotonically increasing 64bit integer

kyc_results

Results of KYC if applicable. Can be nullable.

status_from

Account status changed from

status_to

Account status changed to

reason

Optional

Read Docs

News

Deliver market-moving content by displaying real-time stock and crypto headlines from trusted sources.

Parameters

Attribute

Notes

symbols

List of symbols to obtain news

start

(Default: 01-01-2015) Start date to obtain news

end

(Default: now) End date to obtain news

limit

(Default: 10, Max: 50) Limit of news items to be returned for given page

sort

Optional (Default: DESC) Sort articles by updated date. Options: DESC, ASC

include_content

(Default: false) Boolean whether to include content for news articles

exclude_contentless

(Default: false) Exclude news articles that do not contain content (just headline and summary)

page_token

Pagination token to continue to next page

Read Docs

Orders

Allow your users to monitor, place orders on the stock & crypto market without having to leave your platform.

Parameters

Attribute

Notes

Order ID generated by Alpaca

client_order_id

Client unique order ID

created_at

Timestamp

asset_id

The asset ID

symbol

The asset symbol

asset_class

The asset class

qty

Order quantity

filled_qty

Filled quantity

order_class

Valid values: simple, bracket, oco, oto

type

Valid values: market, limit, stop, stop_limit, trailing_stop

Read Docs

Corporate Actions

Improve your brokerage's bookkeeping, reconciliation and display notifications to end-users on upcoming public announcements on dividends, mergers, spinoffs, and stock split.

Parameters

Attribute

Notes

ID that is specific to a single announcement.

corporate_action_id

ID that remains consistent across all announcements for the same corporate action.

ca_type

ENUM.CorporateActionType

ca_sub_type

ENUM.CorporateActionType

initiating_symbol

Symbol of the company initiating the announcement.

initiating_original_cusip

CUSIP of the company initiating the announcement.

Read Docs

Funding

Accelerate a wide range of fund flows internationally and domestically through our Plaid integration, wire, and ACH transfers.

Parameters

Attribute

Notes

UUID

account_id

UUID

created_at

Timestamp

updated_at

Timestamp

status

QUEUED, APPROVED, PENDING

account_owner_name

Name of the account owner

bank_account_type

Must be CHECKING or SAVINGS

bank_account_number

Bank account number

bank_routing_number

Bank routing number

nickname

Read Docs

Anthony Hughes, CEO at Stonks Trading

"A relationship first approach is exactly what Stonks Trading needed when looking for a BD partner. We are moving quickly and Alpaca gives a clear direction on new products, timelines, and brings us into the process of determining what offerings should be considered."

Find more customer stories

Ashby Foltz, COO & Co-founder, Charityvest

"Alpaca's Broker API gives us the tools we need to manage investment activity, rebalance portfolios, and liquidate holdings to fund the missions of the 1.4 million nonprofits we support at Charityvest."

Find more customer stories

Martin Sokk, Co-founder, CEO, Lightyear

"When dealing with customer money, it's important to have a partner who understands customer problems and is willing to make an effort to provide solutions. This is not a common practice, but it is an area where Alpaca excels."

Find more customer stories

Trading application build with Alpaca APIs

Build Your Fintech App with Broker API

There are a myriad of different ways our developer-centric APIs can be used to build your product. Broker API is specifically designed to support and offer flexibility to several different use cases; below are some common examples.

Get API Keys

Broker Dealers

Build a trading app to allow users to trade US stocks. Alpaca powers brokerage apps from all over the world and offers solutions that support fully-disclosed, or omnibus relationships

Investment Advisors

Connect your investment advisor service with fractional, and notional investing. Utilize our developer-friendly APIs to build quants-heavy apps

Tech Innovators

We offer start-ups and tech entrepreneurs to build and test with Broker API, along with accessing the full functionality of an operational brokerage in compliance with rules and regulations ^* This partnership structure is only available in select countries.

Neobanks

Embed an investment capability into your banking service. Offer your users the ability to make investments without leaving your app

App Developers

Are you curious and want to learn how to quickly start building an app?

For app development projects, recreation, or more you can easily build, test, and scale your idea with Broker API.

Your Next Venture

With investing becoming an integral part of our lives, every app is now a fintech app.

Learn more about how Broker API can help differentiate your product and add new features such as adding rewards, gifting of shares, cash, portfolio rebalancing, and more.

Gotrade

Powered by Broker API, Gotrade enables users in 150 countries to invest commission-free in fractional US stocks. Gotrade is backed by top investors in the industry including LocalGlobe, Social Leverage, and Y Combinator.

Midas

Powered by Broker API, Midas is the first zero-commission, fully digital stock brokerage of Turkey; providing access to Turkish and US stock markets. Midas is backed by one of the largest private banks of Turkey, DenizBank.

Xantos Labs

Powered by Broker API, Xantos Labs offers a premium investing experience. As the investment manager for the next generation of investors, Xantos Labs builds and manages portfolios for everday folks.

Lightyear

Powered by Broker API, Lightyear is Europe’s first commission-free trading app providing the UK access to US stock markets. Lightyear is backed by top European investors including Mosaic Ventures, Taavet+Sten, and Metaplanet.

Regulatory

Our regulatory status as a Correspondent Clearing Broker Dealer allows our partners all around the world to integrate stock and crypto trading into their product offerings and create countless individual brokerage accounts for their end-users. We have expertise and experience in compliance and broker-dealer operations that help make running and growing your business easier.

Member of FINRA

We are a Broker-dealer, licensed to directly onboard end customers globally and facilitate fund transfers, and approved to offer trading of fractional securities.

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

*Please refer to Disclosures at the bottom of the page for important information about how Alpaca provides securities and cryptocurrency services.

Simple and Modern API

Our simple and modern RESTful Web API allows you to build scalable trading services, while staying compliant with applicable rules and regulations. We also offer Open API support.

Get API Keys Read Docs

1 2 3 4 5 6 7 8 9 10

curl --request POST 'https://broker-api.alpaca.markets/v1/journals' \
--header 'Authorization: *****' \
--header 'Content-Type: application/json' \
--data-raw '{
  "from_account": "64972779-bf75-497f-a023-2e8370e573d4",
  "entry_type": "JNLC",
  "to_account": "6e6ba475-8f14-4645-baa0-0beaf75f7346",
  "amount": "10"
}'

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

// Response
{
    "id": "09b72899-152f-4899-aea5-8d8d0f9071bf",
    "entry_type": "JNLC",
    "from_account": "64972779-bf75-497f-a023-2e8370e573d4",
    "to_account": "6e6ba475-8f14-4645-baa0-0beaf75f7346",
    "symbol": "",
    "qty": null,
    "price": "0",
    "status": "queued",
    "settle_date": null,
    "system_date": null,
    "net_amount": "10",
    "description": ""
}

Fractional & Notional Stocks

Developer-First API

20+ Crypto Coins

Embed Crypto and Stock Solutions with Broker API

Crypto

Stocks

Performance and Scale are in Our DNA

Scalability

Real-Time Event-Driven Architecture

Order Processing

Building Blocks for Your Specific Needs

Build Your Fintech App with Broker API

Broker Dealers

Investment Advisors

Tech Innovators

Neobanks

App Developers

Your Next Venture

Regulatory

Member of FINRA

Simple and Modern API

Contact Us