{"slug":"rtt-phoenix-ai-work-api-v1-health-9f5060","title":"Real-time L2 sequencer health across 12 chains (Base, Arbitrum, Optimism, zkSync","host":"rtt.phoenix-ai.work","method":"GET","resource":"https://rtt.phoenix-ai.work/api/v1/health","category":"code","description":"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.","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":265,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"properties":{},"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"arb_revert_ratio":{"description":"Fraction of reverted txs on Arbitrum (0.0-1.0)","type":"number"},"base_revert_ratio":{"description":"Fraction of reverted txs on Base (0.0-1.0)","type":"number"},"blob_base_fee":{"description":"EIP-4844 blob base fee","type":"number"},"chains":{"description":"Per-chain P99/P95 RTT in ms, stall flag, last-updated unix timestamp. Chains: base, arbitrum, optimism, zksync, blast, linea, mantle, mode, scroll, taiko, polygon_zkevm, casper","type":"object"},"gas_pressure":{"description":"L1 gas price in gwei","type":"number"},"recommendation":{"enum":["SAFE_TO_EXECUTE","ELEVATED_RISK","HIGH_RISK","STALL_DETECTED"],"type":"string"},"timestamp":{"description":"ISO 8601 UTC timestamp","type":"string"}},"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":265,"error":null}],"description_full":"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.","last_updated":"2026-09-01T19:09:48.421Z","schemes":["exact"]}