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The API to buy Treasuries directly

Our API is built on top of TreasuryDirect. You can connect an existing account or open a new account with one API call, and then automate treasury management with just a few lines of code.
There is no risk of bank runs or money market fund failures, as you deal directly with the US Treasury Department.

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Open accounts in minutes

Manage TreasuryDirect accounts for individuals and entities.

curl -L -X POST '<TREASURY_API_URL>/accounts' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>' \
-d '{
  "registration": {
    "entityId": "entity_fnl4z",
    "bankRoutingNumber": "101050001",
    "bankAccountNumber": "9488442",
    "bankAccountType": "CHECKING",
    "password": "*********"
  }
}'
# Register new accounts
curl -L -X POST '<TREASURY_API_URL>/accounts' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>' \
-d '{
  "registration": {
    "entityId": "entity_fnl4z",
    "bankRoutingNumber": "101050001",
    "bankAccountNumber": "9488442",
    "bankAccountType": "CHECKING",
    "password": "*********"
  }
}'
curl -L -X POST '<TREASURY_API_URL>/accounts' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>' \
-d '{
  "credentials": {
    "accountNumber": "W-530-247-999",
    "password": "*********"
  }
}'
# Connect existing accounts
curl -L -X POST '<TREASURY_API_URL>/accounts' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>' \
-d '{
  "credentials": {
    "accountNumber": "W-530-247-999",
    "password": "*********"
  }
}'
curl -L -X PATCH \
'<TREASURY_API_URL>/accounts/:accountId/credentials' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>' \
-d '{
  "accountNumber": "W-530-247-999",
  "password": "*********"
  "otp": "Y7sGksme"
}'
# Update account credentials
curl -L -X PATCH \
'<TREASURY_API_URL>/accounts/:accountId/credentials' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>' \
-d '{
  "accountNumber": "W-530-247-999",
  "password": "*********"
  "otp": "Y7sGksme"
}'
# List Accounts
curl -L -X GET '<TREASURY_API_URL>/accounts' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Get Account
curl -L -X GET '<TREASURY_API_URL>/accounts/account_43gf9' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Monitor account status
# List Accounts
curl -L -X GET '<TREASURY_API_URL>/accounts' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Get Account
curl -L -X GET '<TREASURY_API_URL>/accounts/account_43gf9' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'
Arrow up icon

Register new accounts

Connect existing accounts

Update account credentials

Monitor account status

Buy, monitor, research T-bills with code

Everything you can do with the UI, you can do with code.

curl -L -X POST '<TREASURY_API_URL>/orders' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>' \
-d '{
  "accountId": "account_4i8rm",
  "securityId": "security_gkjlzp",
  "amount": 10000
}'
# Place Treasury orders
curl -L -X POST '<TREASURY_API_URL>/orders' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>' \
-d '{
  "accountId": "account_4i8rm",
  "securityId": "security_gkjlzp",
  "amount": 10000
}'
# List Orders
curl -L -X GET '<TREASURY_API_URL>/orders' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Get Order
curl -L -X GET '<TREASURY_API_URL>/orders/order_girj0z' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Monitor order status
# List Orders
curl -L -X GET '<TREASURY_API_URL>/orders' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Get Order
curl -L -X GET '<TREASURY_API_URL>/orders/order_girj0z' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# List Securities
curl -L -X GET '<TREASURY_API_URL>/securities' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Get Security
curl -L -X GET '<TREASURY_API_URL>/securities/security_gkjlzp' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Research tradable securities
# List Securities
curl -L -X GET '<TREASURY_API_URL>/securities' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Get Security
curl -L -X GET '<TREASURY_API_URL>/securities/security_gkjlzp' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# List Holdings
curl -L -X GET '<TREASURY_API_URL>/holdings' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Get Holding
curl -L -X GET '<TREASURY_API_URL>/holdings/holding_rj3nf' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Check holding balances
# List Holdings
curl -L -X GET '<TREASURY_API_URL>/holdings' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'


# Get Holding
curl -L -X GET '<TREASURY_API_URL>/holdings/holding_rj3nf' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer <TOKEN>'
Arrow up icon

Place Treasury orders

Monitor order status

Research tradable securities

Check holding balances

Automate treasury management

Ladder short-term and long-term bills for optimal liquidity and yield, automatically.



# I have $2 million in corporate cash.
total_cash = 2_000_000  


# Leave $500k as operating cash, and buy treasury bills with the rest.
treasury_allocation = total_cash - 500_000 


# Put 1/3 into 4 week bills, 1/3 into 26 week bills, and 1/3 into 52 week bills, and repeat.
repeat_buy(interval="1 month", term="FOUR_WEEK", amount=treasury_allocation / 3)
repeat_buy(interval="6 months", term="TWENTY_SIX_WEEK", amount=treasury_allocation / 3)
repeat_buy(interval="1 year", term="FIFTY_TWO_WEEK", amount=treasury_allocation / 3)

Frequently Asked Questions

Why buy treasuries directly instead of a money market funds (MMFs)?

According to this study https://www.newyorkfed.org/medialibrary/media/research/staff_reports/sr599.pdf, money market funds (MMFs) are themselves subject to runs. As a startup, we experienced the SVB bank run and want to avoid another episode of this.

Can I use TreasuryDirect.gov to buy?

Yes. But our API simplifies the whole process and does not touch your money. It automates the process through TreasuryDirect, which means you can verify your account on TreasuryDirect at any time and disconnect it from our system.

I already have a TreasuryDirect account, can I use it?

Yes. Our API allows you to connect an existing account like you connect a bank account with Plaid or create a new account if you don’t have one.

How is it different from buying at a brokerage?

You can open accounts in one API call and start purchasing. Our API also allows you to ladder and automate repurchasing. Allocate 1/3 in 4-week bills, 1/3 in 26-week bills, 1/3 in 52-week bills or anyway you want.

What are the yields?

26-week T-bill has a rate of 5.2% on 3/14/23. See more here: https://www.treasurydirect.gov/auctions/announcements-data-results.

Are T-bills liquid?

Treasuries have different maturity levels. Bills have short-term maturities (ranging from 4 to 52 weeks), bonds have medium-term maturities, and notes have longer-term maturities. If you hold to maturity, you will not lose money. In case you need emergency cash, you can transfer these holdings from TreasuryDirect to another brokerage and sell them before maturity.