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Base RPC Health Map
x402
Base RPC Health Map is a paid API for AI agents from x402.dailyelo.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns real-time staleness, latency, and error-rate measurements for all major Base public RPC endpoints, polled every 30 seconds in parallel.
Price / call$0.01
Success—
StatusUnknown
How this service works
Which Base public RPCs serve a stale chain tip. Every 30s we ask all major public RPCs for eth_blockNumber in parallel and record how many blocks behind the fastest peer each was, plus latency and error rate. An RPC never reports its own lag, so an agent reading a balance from a lagging endpoint cannot tell. Omit ?rpc for the full map; ?rpc=<host> for one.
Output
A map of major Base public RPC endpoints, each with: number of blocks behind the fastest peer (measured at the same instant), round-trip latency, and error rate. When querying a specific RPC via ?rpc=<host>, returns the same metrics for just that endpoint. Data is at most 30 seconds old.
Example use cases
Spot stale RPC before reading balance
“Before I query my user's USDC balance on Base, check if the RPC endpoint at base.llamarpc.com is currently lagging behind the chain — how many blocks behind is it and what's its error rate?”
Pick fastest RPC for a trading bot
“My trading bot needs the freshest chain data on Base — can you pull the full RPC health map and tell me which public endpoints have zero block lag and the lowest latency right now?”
Debug unexpected stale contract reads
“My app is reading stale contract state on Base and I can't figure out why — can you check the health map for the RPC at mainnet.base.org and tell me how many blocks behind it's running?”
Technical details
Endpoint
GEThttps://x402.dailyelo.com/v1/rpc/healthWhen to prefer
Use this endpoint when you need to know whether a specific Base public RPC is serving a stale chain tip before trusting data read from it — particularly before reading balances, contract state, or transaction receipts where staleness would be undetectable by the caller. Prefer this over generic uptime monitors because it measures block-level lag rather than mere reachability.
Side effects
- Unknown or unlisted RPC host returns empty or 404 response
- Network or upstream timeout causes missing data for some endpoints in the map
- Stale measurement if the 30-second polling cycle is momentarily delayed
- Invalid ?rpc query parameter format returns an error or no results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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