For agents, scrapers, and anyone whose traffic keeps getting politely declined. Two lines of code, every target you couldn’t reach.
The CDP URL is the only thing that changes. Connect the way you already connect. Authenticate the way you already authenticate. The rest of your scraper doesn't notice.
// Before — patched Chrome, residential proxies, prayers
const browser = await chromium.launch({ headless: true, proxy: { server: 'http://...' } })
// After — drop in /v1/sessions, keep the rest
const browser = await chromium.launch({ headless: true, proxy: { server: '...' } })const { cdp_url } = await fetch('https://api.chaser.sh/v1/sessions', { method: 'POST' }).then(r => r.json())const browser = await chromium.connectOverCDP(cdp_url)
// → request completed · 2,341 ms first paint · $0.04 transferred| Capability | Chaser | Generic antidetect browser | Patched Chrome | Off-the-shelf headless |
|---|---|---|---|---|
| Real browser Genuine fingerprint, not a desktop UA spoof | ✓ | ✗ | ✗ | ✗ |
| Residential proxy bundled In the $/GB price — no separate SKU | ✓ | ~ | ✗ | ✗ |
| Real userActivation gestures Trusted-events tree, not synthetic | ✓ | ✗ | ✗ | ✗ |
| JA4 fingerprint rotation Per-session TLS / HTTP/2 signature | ✓ | ~ | ✗ | ✗ |
| Multi-user-isolated sessions Cookies, storage, IP never crossed | ✓ | ~ | ✗ | ~ |
| $/GB transparent pricing Pay for data, not for time | ✓ | ✗ | ✗ | ~ |
Categories, not products — measured behaviour against a public test harness. We don't name vendors here on purpose.
Pay for data, not for time. Idle sessions cost nothing. Proxies included. 100 MB of credit on signup. Credits roll over — your unused $0.42 from last month is still there.