Faster APIs.
Lower Bills. Zero Infra.
CORSPROXY caches API responses at 330+ edge locations worldwide. Slow third-party APIs become instant. Rate limits stop being a problem. API costs drop.
Cache in Three Steps
Prefix the URL
Replace your API URL with the CORSPROXY prefix. No code changes beyond the URL string.
First Request Fetches
CORSPROXY fetches from the origin API and caches the response at your nearest edge location.
All Subsequent Requests are Instant
Cache hits return in under 10ms from the nearest edge — without touching the origin API.
Cache Control
Eligible GET and HEAD responses use a one-hour default. Production plans can override the duration per request with the ttl parameter.
ttl=300 Cache for 5 minutes (300 seconds). Custom TTLs require a Production plan and API key.
ttl=3600 Cache for 1 hour. Good for rarely-changing data like exchange rates or reference data.
(no ttl parameter) Use CORSPROXY's default one-hour cache duration for eligible requests.
Rate Limit Protection
Share a single cached response across thousands of users without hitting API rate limits.
Faster Dashboards
Turn a 1-second API call into a 10ms cache hit. Your dashboards load before users notice.
Cut API Costs
Reduce repeated origin work for crypto prices, weather, exchange rates, and other shared data.
Global Performance
Responses cached at the edge closest to each user. Lower latency worldwide — without a CDN setup.
Predictable Freshness
Choose a TTL that balances response speed with how often your application needs refreshed data.
Cryptocurrency & Finance
Cache volatile data like token prices or FX rates with short TTLs. Get fresh-enough data without hammering the API.
Ready to Copy
// Default caching — no cache parameters needed.
// CORSPROXY caches responses automatically at the edge.
const params = new URLSearchParams({
key: 'YOUR_API_KEY',
url: 'https://api.coinmarketcap.com/data-api/v3/cryptocurrency/listing',
});
const res = await fetch(`https://corsproxy.io/?${params}`);
const data = await res.json();// Custom TTL: cache for 5 minutes (300 seconds)
const params = new URLSearchParams({
key: 'YOUR_API_KEY',
url: 'https://api.example.com/prices',
ttl: '300',
});
const res = await fetch(`https://corsproxy.io/?${params}`);
const data = await res.json();// Custom TTL: cache for 1 hour (3600 seconds)
const params = new URLSearchParams({
key: 'YOUR_API_KEY',
url: 'https://api.example.com/reference-data',
ttl: '3600',
});
const res = await fetch(`https://corsproxy.io/?${params}`);
const data = await res.json();No infra needed
Faster APIs. Lower costs. Today.
No Redis. No Varnish. No CDN config. Just prefix your API URL and responses are cached globally.