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Xerxes Base Gas Price API
x402
Xerxes Base Gas Price API is a paid API for AI agents from ari001.tailb4ac3a.ts.net, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Returns the current base gas price, base fee, and priority fee on the Base blockchain at the chain head (not a per-call estimate).
Price / call$0.005
Success—
StatusUnknown
How this service works
Base gas price, base fee and priority fee at head. Not an estimate of a specific call. Unread RPC is not zero.
Output
Returns the current base gas price, EIP-1559 base fee, and priority fee (miner tip) as observed at the latest block head on the Base network. These are network-level values, not estimates for a specific transaction or call.
Example use cases
Pre-transaction gas check
“Before I send this Base transaction, what are the current base fee and priority fee at the chain head so I can set the right gas parameters?”
Gas cost monitoring for DeFi bot
“Keep an eye on Base gas prices for me — what's the base fee and priority fee right now so I can decide whether it's cheap enough to execute this swap?”
Fee estimation for wallet UI
“What are the current EIP-1559 gas parameters on Base — the base gas price, base fee, and priority fee — so I can display an accurate fee estimate to the user?”
Technical details
Endpoint
GEThttps://ari001.tailb4ac3a.ts.net/v1/base/gasWhen to prefer
Use this endpoint when an agent needs real-time, raw EIP-1559 gas parameters (base fee + priority fee) on the Base L2 network at the current chain head, especially before constructing or submitting a transaction. Prefer this over Ethereum mainnet gas APIs when the target chain is Base specifically.
Side effects
- RPC node unavailable or unresponsive — returns error indicating dead RPC
- Network congestion may cause slight staleness in returned values
- Payment not provided or invalid x402 payment header — returns 402 Payment Required
- Malformed request — returns 4xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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