tZERO API
OverviewRESTFIX

tZERO API

The tZERO API provides programmatic access to the tZERO trading platform. Use it to manage orders, stream market data, access account and position information, and integrate directly with tZERO's ATS via REST or FIX 4.2 / 4.4 protocols.

Authentication

Every request requires two credentials sent as headers:

  • x-apikey— Contact us to get your API key
  • Authorization— Bearer token obtained from POST /auth/v1/api/token.

Click Authorize in the API explorer to store both credentials in the browser; they will be sent automatically on every Try it out request.

Base URL

https://gateway-web-api.tzero.com/app

Available APIs

  • RESTHTTP/JSON API for account management, order entry, and market data queries. Explore and test endpoints interactively in the API reference.
  • FIXFIX 4.2 / 4.4 protocol for low-latency order entry, drop-copy execution reports, and real-time market data. See the FIX documentation.
Open API Explorer
AUTHENTICATED REQUEST
cURL
1curl -X POST https://gateway-web-api.tzero.com/app/auth/v1/api/token
2  -H 'x-apikey: <YOUR_API_KEY>'
3  -H 'Content-Type: application/json'
4  -d '{"clientId":"<CLIENT_ID>","clientSecret":"<CLIENT_SECRET>"}'

Your credentials

Replace <YOUR_API_KEY>, <CLIENT_ID>, and <CLIENT_SECRET> with the values provided by tZERO. The token endpoint returns an accessToken valid for 1 hour.