SERVICE

crypto-gas-fees

Xynaptic Gas Fees — live gas prices across chains (Ethereum, Base) with slow/average/fast tiers in Gwei + estimated transfer cost. GET no params. Plan your on-chain transaction timing.

$0.02 per call · /v1/crypto-gas-fees

Call it

curl -s https://api.xynaptic.io/v1/crypto-gas-fees \
  -H "Accept: application/json"

# -> 402 Payment Required (x402 challenge: price, payTo, networks)
# -> sign the payment, retry with PAYMENT-SIGNATURE -> 200

What you get back

{
  "service": "crypto-gas-fees",
  "ethereum": {
    "slow": 0.29,
    "average": 0.78,
    "fast": 2.05
  },
  "base": {
    "slow": 0.01
  },
  "summary": "ETH fast 2.05 Gwei, Base 0.01."
}