the402 endpoint detail

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rtt.phoenix-ai.work v1 health

https://rtt.phoenix-ai.work/api/v1/health

answers 402

Real-time L2 sequencer health across 12 chains (Base, Arbitrum, Optimism, zkSync, Blast, Linea, Mantle, Mode, Scroll, Taiko, Polygon zkEVM, Casper). Returns kernel-level P99/P95 RTT from eBPF probes, revert ratios, gas pressure, and execution recommendation.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.01
Network
base
Pay to
0xbb967F16C7f3e9B4c1626680684445d41dBE44Ab
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
90 ms
Payment options
2 usable of 2
Last checked
2026-09-06T01:12:24.238Z (31d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Frtt.phoenix-ai.work%2Fapi%2Fv1%2Fhealth"