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Northline Crypto Gas Price API
x402
Northline Crypto Gas Price API is a paid API for AI agents from 206-81-14-131.sslip.io, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-01).
Returns current Ethereum and EVM-compatible blockchain gas prices, paid per-call via x402 USDC micropayment on Base
Price / call$0.003
Success—
StatusUnknown
How this service works
Pay-per-call APIs, paid downloads and work-on-request for agents. Payment: x402 (USDC on Base, eip155:8453), no accounts or API keys. Catalog: https://206-81-14-131.sslip.io/?format=json. Agent guide: https://206-81-14-131.sslip.io/llms.txt
Output
Returns current gas price data for EVM-compatible blockchains, including base fee, priority fee (tip), and fast/standard/slow gas price tiers in gwei, enabling agents to estimate transaction costs before submission.
Example use cases
Pre-transaction gas check for DeFi
“Before I submit this swap on Ethereum mainnet, can you check the current gas prices and tell me if they're in a reasonable range to proceed?”
Gas price monitoring for scheduling
“Check the current gas prices on Ethereum and let me know if the base fee is under 20 gwei — I want to time my NFT mint when it's cheap.”
Cost estimation for agent operations
“I'm about to have my agent execute a batch of on-chain transactions — what are the current gas prices so I can estimate the total ETH cost?”
Technical details
Endpoint
GEThttps://206-81-14-131.sslip.io/svc/crypto-prices/gas?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need real-time gas price data for Ethereum or EVM-compatible chains without API key setup, paying only $0.003 USDC per call via x402 micropayment. Prefer this over free public gas oracles when operating in an agent context that already supports x402 payments and needs reliable, on-demand gas data.
Side effects
- Payment not included or insufficient USDC — returns HTTP 402 requiring x402 payment
- Upstream gas oracle unavailable — may return 503 or stale data
- Invalid network/chain parameter — returns 400 with error message
- Rate limiting or temporary node unavailability
Tags
x402
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