Gas Fee Predictor

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Live Ethereum and L2 gas fees: current gas, cheapest L2, forecast, ETH price, cost estimates.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "Gas Fee Predictor": {
      "url": "https://api.gasfeepredictor.com/api/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (7)

• get_current_gas

  Get the current Ethereum mainnet gas price (low / average / high, in Gwei) plus the live ETH/USD price and a send-now-vs-wait recommendation. Use this to answer "what is the gas fee right now".

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• get_l2_gas

  Compare live Layer-2 gas fees across Arbitrum, Base, Optimism, and Polygon (Gwei and the estimated wallet fee in USD for a standard transfer), and identify the cheapest right now. Use for "cheapest L2" / "L2 gas fees" questions.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• get_eth_price

  Get the current ETH/USD spot price and its 24-hour change.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• best_time_to_transact

  Find out whether to send a transaction now or wait — returns the current recommendation, expected savings, and when the next cheaper gas window is predicted.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• estimate_transaction_cost

  Estimate the current USD gas cost of a specific Ethereum mainnet action (ETH transfer, ERC-20/USDC transfer, Uniswap swap, or NFT mint), or a custom gas-units amount, at the chosen priority tier.

  Parameters:

  • action (required) — string — The transaction type. Use "custom" with gas_units for anything else.
  • tier — string — Priority tier: low (cheapest), average, or high (fastest).
  • gas_units — number — Required when action is "custom": the gas units the transaction uses.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• get_gas_forecast

  Get the forward-looking hourly Ethereum gas forecast (up to 24 hours ahead) with the predicted cheapest window. Use for "when will gas be cheaper", "should I wait until tomorrow", or planning a transaction.

  Parameters:

  • hours — integer — How many hours ahead to return (1-24). Defaults to 12.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

• get_gas_history

  Get recent historical Ethereum mainnet gas prices over a chosen window, with min/max/average. Use to answer "what has gas been doing", "was gas cheaper yesterday", or to compare the current price against a recent baseline.

  Parameters:

  • range — string — Look-back window. Defaults to 1d.

  Hints: read-only not declared · destructive not declared · idempotent not declared · open-world not declared

Publisher website Repository

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.