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meryol-payai Chain Health Check
x402
meryol-payai Chain Health Check is a paid API for AI agents from meryol-payai.hf.space, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-11).
Probes multiple public RPC nodes in parallel for a given EVM chain and returns a 0-100 health score, median block number, RPC lag, head age, and per-node latency.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pre-burst chain liveness check: probes a pool of public RPCs in parallel; median block number, max lag between RPCs, head age, latency, 0-100 health score. Call before timing a tx burst or switching RPC. Chains: ethereum, base, arbitrum, optimism.
Output
Returns a 0-100 health score, the median block number across probed RPCs, the maximum block lag between nodes, the age of the chain head in seconds, per-node latency figures, and a count of healthy RPC nodes — all sampled in parallel at call time.
Example use cases
Example prompt
“Before I fire off this batch of Ethereum transactions, can you run a chain health check on Ethereum and tell me the RPC health score, block lag, and how fresh the latest block is?”
Technical details
Endpoint
GEThttps://meryol-payai.hf.space/chain/health/:chain?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick pre-transaction or pre-burst liveness assessment of a specific EVM chain's public RPC pool — especially when you want a single aggregated health score rather than querying individual RPC endpoints yourself. Ideal for DeFi bots, transaction schedulers, or any agent that switches RPC providers based on network conditions.
Side effects
- Unsupported chain name returns 422 or 404 — only ethereum, base, arbitrum, optimism are valid
- All RPC nodes unreachable returns a low health score or error state
- Intermittent Hugging Face Space cold-start latency may add several seconds to first response
- Payment failure (x402) returns 402 if USDC balance is insufficient
Input
{
"input": {
"type": "http",
"method": "GET",
"pathParams": {
"chain": "ethereum"
},
"queryParams": {}
}
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
{
"rpcs": [
{
"rpc": "https://ethereum-rpc.publicnode.com",
"error": null,
"block_ts": 1781761535,
"latency_ms": 58,
"block_number": 25342443
},
{
"rpc": "https://eth.drpc.org",
"error": null,
"block_ts": 1781761535,
"latency_ms": 109,
"block_number": 25342443
},
{
"rpc": "https://1rpc.io/eth",
"error": null,
"block_ts": 1781761523,
"latency_ms": 130,
"block_number": 25342442
},
{
"rpc": "https://cloudflare-eth.com",
"error": null,
"block_ts": 0,
"latency_ms": 113,
"block_number": 0
}
],
"chain": "ethereum",
"notes": [
"rpc_divergence_25342443_blocks"
],
"head_age_s": 6,
"score_0_100": 80,
"max_lag_blocks": 25342443,
"total_rpc_count": 4,
"healthy_rpc_count": 4,
"median_block_number": 25342443
}Tags
x402
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