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Gas Fee Predictor

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io.github.higherbeing/gasfeepredictor-mcpv1.0.2

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

Crypto & Web3

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https://api.gasfeepredictor.com/api/mcp

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Tool list from our last check. Connect live to refresh it.

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.

This tool takes no arguments.

This tool isn't marked read-only, so it may change something on the server or in an account you connected.

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Tools

Gas Fee Predictor MCP server | mcptry

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.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "properties": {}
}

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.

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

Input schema (JSON)

{
  "type": "object",
  "required": [
    "action"
  ],
  "properties": {
    "tier": {
      "enum": [
        "low",
        "average",
        "high"
      ],
      "type": "string",
      "default": "average",
      "description": "Priority tier: low (cheapest), average, or high (fastest)."
    },
    "action": {
      "enum": [
        "eth_transfer",
        "erc20_transfer",
        "uniswap_swap",
        "nft_mint",
        "custom"
      ],
      "type": "string",
      "description": "The transaction type. Use \"custom\" with gas_units for anything else."
    },
    "gas_units": {
      "type": "number",
      "description": "Required when action is \"custom\": the gas units the transaction uses."
    }
  }
}

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".

No arguments.

Input schema (JSON)

{
  "type": "object",
  "properties": {}
}

get_eth_price

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

No arguments.

Input schema (JSON)

{
  "type": "object",
  "properties": {}
}

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.

Argument	Type	Description
hours	integer	How many hours ahead to return (1-24). Defaults to 12.

Input schema (JSON)

{
  "type": "object",
  "properties": {
    "hours": {
      "type": "integer",
      "default": 12,
      "maximum": 24,
      "minimum": 1,
      "description": "How many hours ahead to return (1-24). Defaults to 12."
    }
  }
}

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.

Argument	Type	Description
range	string	Look-back window. Defaults to 1d.

Input schema (JSON)

{
  "type": "object",
  "properties": {
    "range": {
      "enum": [
        "30m",
        "2h",
        "6h",
        "1d",
        "7d",
        "30d"
      ],
      "type": "string",
      "default": "1d",
      "description": "Look-back window. Defaults to 1d."
    }
  }
}

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.

No arguments.

Input schema (JSON)

{
  "type": "object",
  "properties": {}
}