Twelve Data

Twelve Data — free tier with API key

📈 FinanceREACHABLEchecked 11h ago
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.

99REACHABILITY SCORE ⓘ
Status badge · for your READMEshipapis health badge: — · healthy
CHECK TIER · REACHABILITY

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

Uptime history
99.02%90d reachable
98.3%30d reachable
11hLast check · since JUL 8 · server OK
operationalpartialdownno data
Live response samplecaptured by our last successful check
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 · 3ReachableFULL DOCS ↗
Auth wall reachable — GET /time_series?symbol=%s&interval=%s&apikey=%s (key stripped)253 mschecked 11h ago
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

Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.

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 Rate limits: Unpublished.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?

As of our last scheduled check, Twelve Data is healthy with 99.02% uptime over 90 days and a 253 ms median response. We re-probe it every sweep — the status badge and uptime chart above always show the latest.