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Twelve Data

Twelve Data — free tier with API key

📈 FinanceON SCHEDULE
AUTH APIKEYCORS ✓AGENT ?HTTPS ✓COMMERCIAL ?

Twelve Data exposes a free-tier JSON API. Register for an API key if required; we verified a public or demo endpoint.

—REACHABILITY SCORE ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: — · unmonitored
ON PROBE SCHEDULE

We probe without your API key. A 401/403 auth wall means the server is up — not a full health pass. Open provider docs ↗

Uptime historystarts after first probe

On our probe schedule. Uptime charts appear after the first check lands.

Example responsefrom provider docs — not verified by us
GET https://api.twelvedata.com/time_series?symbol=%s&interval=%s&apikey=%s

{
  "code": 401,
  "message": "**apikey** parameter is incorrect or not specified. You can get your free API key instantly following this link: https://twelvedata.com/pricing. If you believe that everything is correct, you can contact us at https://twelvedata.com/contact/customer",
  "status": "error"
}
Call itcurl · fetch · python
curl "https://api.twelvedata.com/time_series?symbol=%s&interval=%s&apikey=%s"
const res = await fetch("https://api.twelvedata.com/time_series?symbol=%s&interval=%s&apikey=%s");
const data = await res.json();
console.log(data);
import requests

res = requests.get("https://api.twelvedata.com/time_series?symbol=%s&interval=%s&apikey=%s")
print(res.json())
Endpoints · 3On scheduleFULL DOCS ↗
On schedule — auth-wall reachability checks pending
GET/time_series?symbol=%s&interval=%s&apikey=%sPROBED

Twelve Data — free tier with API key

GET/time_series?limit=5

Time Series — documented GET route.

GET/time_series?page=1

Time Series — documented GET route.

Machine-readable spec

We probe without your API key. A 401/403 auth wall means the server is up — not a full health pass. Export includes every documented route below.

Response-shape history

Not tracked yet. Shape-change history starts once this API joins our probe schedule.

Twelve Data: common questions

Is Twelve Data free to use?

Yes — Twelve Data is a free finance API. Free tier: Free tier — API key required. Whether the free tier allows commercial use is unclear — check the provider docs.

Does Twelve Data need an API key?

Yes — Twelve Data needs a free API key, which you pass on each request. Rate limits: Unpublished.

Can I call Twelve Data from the browser?

Yes — Twelve Data returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.

Is Twelve Data up right now?

Twelve Data is catalogued but not yet on our probe schedule, so we don't publish a live status for it. Check the provider's own status page or docs for its current state.