0x
0x — keyless JSON API
AUTH NONECORS ✓AGENT ✓HTTPS ✓COMMERCIAL ?
0x. API for querying token and pool stats across various liquidity pools
Uptime history
100%90 days
100%30 days
622P50 · ms
3421P95 · ms
Response time · last 48 checks
Fastest 94 ms, slowest 2166 ms, most recent 309 ms.
Live response samplecaptured by our last successful check
GET https://api.0x.org/
{
"message": "This is the root of the 0x API. Visit https://0x.org/docs/ for documentation."
}Call itcurl · fetch · python
curl "https://api.0x.org/"const res = await fetch("https://api.0x.org/");
const data = await res.json();
console.log(data);import requests
res = requests.get("https://api.0x.org/")
print(res.json())Monitored path responding — GET /622 mschecked 4h ago
GET
/PROBED0x — keyless JSON API
GET
/?limit=5Paginated variant with limit parameter.
Machine-readable spec
We probe a documented GET and expect 2xx JSON — full uptime and health score. 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.
0x: common questions
Is 0x free to use?
Yes — 0x is a free crypto & web3 API. Free tier: Free — limits not published. Whether the free tier allows commercial use is unclear — check the provider docs.
Does 0x need an API key?
No — 0x needs no API key or signup. You can call it straight away; rate limits still apply (Unpublished).
Can I call 0x from the browser?
Yes — 0x 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 0x up right now?
As of our last scheduled check, 0x is healthy with 100% uptime over 90 days and a 622 ms median response. We re-probe it every sweep — the status badge and uptime chart above always show the latest.