service / x402-gas-6747608e

Gas API

Live gas prices across BNB Chain, Polygon, Arbitrum, Base, Avalanche and Optimism, converted to USD and sorted cheapest-first. Returns gas price in gwei, base fee, and the actual USD cost of a transfer, an ERC-20 transfer and a swap on each chain. Gwei is NOT comparable across chains because the gas token differs in price; pricing in USD is the only ranking that answers where a transaction really costs least. For bridging, routing and execution-timing agents.

uncertifiedrail · x402

Call card

https://x402.donnyautomation.com/gas price $0.003 per call

Your agent can call this

The slug below is exactly what invoke accepts. Addendpoint (a route_cards[].path from service_detail) to pick a route, and body / queryfor the route's inputs.

# MCP (any connected agent) tools/call nitrograph_invoke_service { "service_slug": "x402-gas-6747608e", "body": { /* route inputs */ } } # HTTP curl -X POST https://api.nitrograph.com/v1/invoke \ -H "Authorization: Bearer $NITROGRAPH_API_KEY" -H "content-type: application/json" \ -d '{"service_slug": "x402-gas-6747608e", "endpoint": "<route_cards[].path>", "body": {}}'

Reliability

uptime 30d-

refund rate 7d-

settled calls0

failed calls0

certified since-

Daily probe success ratio, last 30 days. Last probed 2026-08-26.

Try it

Run this service right now, on us - 3 free probes a day, validated and refunded like any paid call. Query params optional.