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Gas Fee Predictor

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

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http gas-fee-predictor 'https://api.gasfeepredictor.com/api/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "gas-fee-predictor": {
            "type": "http",
            "url": "https://api.gasfeepredictor.com/api/mcp"
        }
    }
}
NPM package gasfeepredictor-mcp
Claude Code 
claude mcp add gas-fee-predictor -- npx -y gasfeepredictor-mcp@1.0.1
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "gas-fee-predictor": {
            "command": "npx",
            "args": [
                "-y",
                "gasfeepredictor-mcp@1.0.1"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Gas Fee Predictor — MCP Server
  2. 1. Hosted endpoint (recommended)
  3. 2. npm package (stdio)
  4. Tools
  5. Notes
  6. Changelog

Gas Fee Predictor — MCP Server

Live Ethereum + Layer-2 gas-fee data for AI agents, via the Model Context Protocol. Read-only, no API key, no account. Every answer carries a citation back to gasfeepredictor.com.

There are two ways to connect. Prefer the hosted one — there is nothing to install.

If your client supports remote MCP servers — ChatGPT and Claude connectors, Cursor, VS Code, and most current clients do — paste this URL and you are done:

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

Streamable HTTP, unauthenticated, no install, no config file, nothing to keep updated. It exposes 7 tools — two more than the npm package (get_gas_forecast and get_gas_history).

Client config, if your client wants JSON rather than a URL box

{
  "mcpServers": {
    "gasfeepredictor": {
      "type": "streamable-http",
      "url": "https://api.gasfeepredictor.com/api/mcp"
    }
  }
}

Verify it yourself:

curl -s -X POST https://api.gasfeepredictor.com/api/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

2. npm package (stdio)

For clients that speak stdio only. Requires Node ≥ 18.

{
  "mcpServers": {
    "gasfeepredictor": {
      "command": "npx",
      "args": ["-y", "gasfeepredictor-mcp"]
    }
  }
}

Claude Desktop keeps that file at ~/Library/Application Support/Claude/claude_desktop_config.json on macOS. Restart the client, then ask: "What's the Ethereum gas fee right now, and is it cheaper on an L2?"

Env varDefaultPurpose
GASFEE_API_BASEhttps://api.gasfeepredictor.comOverride the API base (e.g. for self-hosting).

Tools

ToolWhat it answersHostednpm
get_current_gas"What's the Ethereum gas fee right now?" — low/avg/high Gwei, ETH price, send-now-vs-wait.✅✅
get_l2_gas"Cheapest L2 right now?" — live Arbitrum / Base / Optimism / Polygon fees.✅✅
get_eth_priceCurrent ETH/USD and 24h change.✅✅
best_time_to_transactSend now or wait? Next cheaper window + expected savings.✅✅
estimate_transaction_costUSD cost of an ETH transfer / USDC transfer / Uniswap swap / NFT mint (or custom gas), per tier.✅✅
get_gas_forecastForward-looking hourly gas forecast, up to 24h ahead.✅—
get_gas_historyRecent historical mainnet gas over a chosen window, with min/max/avg.✅—

Notes

  • Read-only and unauthenticated — it only reads public gas data.
  • Upstream data refreshes every ~30–60s.
  • Served from api.gasfeepredictor.com, not the apex, so automated clients are not challenged by the CDN's bot protection.
  • MIT licensed.

Changelog

1.1.0 — get_current_gas and estimate_transaction_cost now fall back to /api/eth-price when the dashboard payload returns ethPrice: null (upstream price cooldown). Previously they rendered ETH ≈ $undefined or failed outright while the price endpoint was serving fine.

Frequently asked questions

What is Gas Fee Predictor?

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

How do I install Gas Fee Predictor?

It runs as a remote server. In Claude Code: claude mcp add --transport http gas-fee-predictor 'https://api.gasfeepredictor.com/api/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Gas Fee Predictor need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Gas Fee Predictor open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Gas Fee Predictor?

It is published by higherbeing. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.