Gas Tracker
Slow / standard / fast fees and the USD cost of a transfer or swap on 7 chains.
Real-time gas fees and network health for Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain and Solana: slow / standard / fast EIP-1559 fees (base fee + priority tip, from the last 20 blocks), cost of a transfer / ERC-20 transfer / swap in native token and USD, congestion, base-fee trend, block time and latest-block age; Solana priority-fee percentiles and TPS.
What agents use it for
- Pick the cheapest moment and chain to transact
- Estimate fees before an agent sends a transaction
- Watch congestion and base-fee trends
Parameters
| Parameter | Type | Required | Description |
|---|---|---|---|
chains | string | no | Comma-separated subset of: ethereum, base, arbitrum, optimism, polygon, bsc, solana (default: all) |
usd | boolean · default true | no | Include USD cost estimates |
Call it
{
"name": "gas_tracker",
"arguments": {
"chains": "base,ethereum"
}
}curl -i "https://api.ishob.com/v1/crypto/gas-tracker?chains=base%2Cethereum"
Paid with x402: the first call returns HTTP 402 with the price; an x402 client (for example @x402/fetch or @x402/mcp) signs a USDC payment and retries. Calls that fail are not charged.
Connect the MCP server: setup for Claude, Cursor and other clients.