Gas tracker, multichain gas: 5 EVM chains and Bitcoin fees

$0.02 per call · failed calls are never charged · no account or API key needed

One call for current gas prices on Base, Ethereum, Arbitrum, Optimism and Polygon: gas price, base fee and priority fee in gwei and what a plain transfer costs in the native coin and, for the ETH chains, in US dollars (Uniswap ETH price), sorted cheapest first, plus Bitcoin fee rates in sat/vB. Cheaper than the tools bought one by one. Use to pick the cheapest chain, time a transaction or show fees in a wallet.

Run it free (25 free calls) Buy credits by card (from $5) Example result (JSON)

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://agent-data-tools.revmesh2074.workers.dev/pack/gas-tracker?format=json"

Or one of your 25 free calls, no key:

curl "https://agent-data-tools.revmesh2074.workers.dev/pack/gas-tracker?format=json&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "pack": "gas-tracker",
  "ethUsd": 2371.36,
  "chains": [
    {
      "chain": "Optimism",
      "gasPriceGwei": "0.001000292",
      "baseFeeGwei": "0.000000292",
      "priorityFeeGwei": "0.001",
      "transferCost": "0.000000021006132",
      "symbol": "ETH",
      "transferUsd": 0.00005
    }
  ],
  "cheapest": "Optimism",
  "bitcoin": {
    "nextBlock": 3,
    "hour": 2,
    "unit": "sat/vB"
  },
  "failed": {}
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is pack_gas_tracker, and the first 25 successful calls are free:

https://agent-data-tools.revmesh2074.workers.dev/mcp

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