Banking Access Index
Finance
Which US business banking providers accept founders by country of residence, with sources
No keyCORSHTTPS
Tradier
US equity/option market data (delayed, intraday, historical)
Verified 4 days ago: 100% uptime
API key
OAuth flow
HTTPS
Supported
Browser calls
Yes, CORS enabled
Status
Live · 100/100
What our checks found
- Health score
- 100/100
- Reliability
- 100%
- Average latency
- 345ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for Tradier. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# Uses OAuth. Exchange your credentials for an access token first.
curl -s "https://developer.tradier.com/ENDPOINT" \
-H "Authorization: Bearer YOUR_ACCESS_TOKEN" \
-H "Accept: application/json"Where this listing comes from
Aggregated from 2 public sources (public-api-lists, public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
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Tradier — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is Tradier free to use?
Tradier is listed in our free catalogue, but it requires OAuth, so you will need to register before your first call. Providers frequently reserve higher limits and commercial use for paid plans.
Does Tradier need an API key?
Tradier uses OAuth rather than a simple key, so you register an application and complete an authorisation flow before making calls. That is more setup than a key, and it is why OAuth APIs are harder to try quickly.
Can I call Tradier from browser JavaScript?
Yes. Tradier returned CORS headers when we checked it, so a browser will let your page read the response. You can fetch it directly from client-side JavaScript with no proxy and no backend.
Is Tradier still working?
Yes, as of 2026-09-18. Our automated check reached Tradier and recorded a 100% reliability score with a median response time of 345 ms. We re-check on a schedule, and this page updates with the result.
Is Tradier available over HTTPS?
Yes. Tradier serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.