Build, manage, and trade with a
programmable API
Use Fennel's trading API to place equity and ETF orders, customize order routing, track positions, access account data, and power your own automated workflows. Built to help provide clarity, reliability, and seamless integration on top of the Fennel platform.
Use the Fennel API suite, 
to create embedded
trading workflows and 
investing tools.
Example for illustrative purposes only. This sample code does not represent actual trading activity or a recommendation to buy or sell any security.
Your guide to the Fennel API
Visit our documentation to learn how to connect, authenticate, submit trades, retrieve portfolio data, and build your own investing tools. Designed to help developers get started.
Modern tools for serious builders
FINRA & SIPC Member
Our broker-dealer is a member of FINRA and SIPC. Securities in your account offered by Apex are protected up to $500,000 (including up to $250,000 for cash in accordance with SIPC rules and only in the event of broker-dealer insolvency. SIPC protection does not cover market losses). Learn more at sipc.org.
Documentation
Clear documentation with practical examples to help you integrate trading, account, and data functionality into your application.
Real-time & Historic Market Data
Access live price data and historical datasets you can use to build market-related tools and features.
Account Powered by OAuth Technology
Secure account access through OAuth allows users to authenticate safely and manage their information with confidence.
No Minimum Account
Users can open an account and start exploring the platform without a minimum balance requirement.
Trade with zero commissions.
Trade with zero commissions. Your orders are routed through Fennel’s execution partners without selling order flow to market makers.
A closer look at your investing tools
These tools were designed to help you gain more clarity and control over your investing experience. Here’s a preview of what you can do inside the Fennel API.
Illustrative screens shown for demonstration purposes only. Examples do not reflect actual client accounts, orders, or performance, and should not be interpreted as predictions or guarantees.
Generate Tokens
Create new access tokens with a tap whenever you need them. It’s quick, simple, and keeps your account flexible and help secure it.
Order History
See a clear record of all your orders, including completed, canceled, and pending trades.
Customize Token Scope
Choose what each access token can do and decide how your information is used to help with account security.
Holding List
Get a detailed list of every position you own with price changes, gains, losses, and key metrics in one place.
Set Expiration Date
Set how long this API token remains active.
Portfolio Summary
Get an easy-to-read snapshot of your balance, holdings, and performance trends to help you keep track of your portfolio over time.
Order Routing
Choose how your trades are routed. Stick with the default setting or select a different routing preference for more control over your execution path.
Generate Tokens
Create new access tokens with a tap whenever you need them. It’s quick, simple, and keeps your account flexible and help secure it.
Order History
See a clear record of all your orders, including completed, canceled, and pending trades.
Customize Token Scope
Choose what each access token can do and decide how your information is used to help with account security.
Holding List
Get a detailed list of every position you own with price changes, gains, losses, and key metrics in one place.
Set Expiration Date
Set how long this API token remains active.
Portfolio Summary
Get an easy-to-read snapshot of your balance, holdings, and performance trends to help you keep track of your portfolio over time.
Order Routing
Choose how your trades are routed. Stick with the default setting or select a different routing preference for more control over your execution path.
Generate Tokens
Create new access tokens with a tap whenever you need them. It’s quick, simple, and keeps your account flexible and help secure it.
Order History
See a clear record of all your orders, including completed, canceled, and pending trades.
Customize Token Scope
Choose what each access token can do and decide how your information is used to help with account security.
Holding List
Get a detailed list of every position you own with price changes, gains, losses, and key metrics in one place.
Set Expiration Date
Set how long this API token remains active.
Portfolio Summary
Get an easy-to-read snapshot of your balance, holdings, and performance trends to help you keep track of your portfolio over time.
Order Routing
Choose how your trades are routed. Stick with the default setting or select a different routing preference for more control over your execution path.
Our API Access Plans
Core Brokerage
Premium API
Be the first to know about updates to the Fennel API
Stay informed on new endpoints, platform improvements, routing enhancements, documentation updates, market data access, and upcoming system releases. Subscribe to get the latest API news and technical notes directly from the Fennel team.
What you are saying about us
Testimonials reflect the personal experiences of specific customers and may not be representative of all customers. These statements are individual opinions and are not guarantees of future performance or results. Reviewers were not compensated for their feedback. Comparisons to other firms reflect the personal views of the reviewers and may not reflect actual differences in services or features.
I don't think I've ever experienced customer service on this level
After using this brokerage for a few weeks now I have to say I am really impressed. I have nothing but good things to say. The customer service, the app dev team and everyone else is doing amazing work. Highly recommended to try them out.
- Matt M.
Best customer support/communication of any brokerage I've dealt with
Aside from the truly AT communication and support, the UI has consistently improved from the time I began using the service, and is approaching a RobinHood-level of understandability and ease of use while not feeling like it's incentivizing overtrading/'action' like RobinHood does. I'm excited to see what improvements continue rolling out.
- Hunter D.
Great support, beautiful UI, exciting future
I have been with Fennel for over two months now and I can say they are one of the best brokerages. If you're willing to pay the monthly subscription, it is worth it. They have a unique vibrant UI. A lot of other brokerages feel old school, but Fennel feels new. They provide amazing customer support and they care about improving their product greatly. This is only the start for Fennel!
- Jaden D.
Best customer support/communication of any brokerage I've dealt with
Aside from the truly AT communication and support, the UI has consistently improved from the time I began using the service, and is approaching a RobinHood-level of understandability and ease of use while not feeling like it's incentivizing overtrading/'action' like RobinHood does. I'm excited to see what improvements continue rolling out.
- Hunter D.
