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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.

Code source Site web Documentation

Installation

Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).

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

Documentation

Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.

Sommaire
  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.

Questions fréquentes

Qu'est-ce que Gas Fee Predictor ?

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

Comment installer Gas Fee Predictor ?

Il fonctionne comme serveur distant. Dans Claude Code : claude mcp add --transport http gas-fee-predictor 'https://api.gasfeepredictor.com/api/mcp'. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.

Faut-il une clé API pour Gas Fee Predictor ?

Son entrée au registre n'indique aucune clé ni secret obligatoire. Certaines fonctions peuvent tout de même demander un compte auprès du service auquel il se connecte.

Gas Fee Predictor est-il open source ?

Oui. Son code est sur GitHub sous licence MIT.

Qui maintient Gas Fee Predictor ?

Il est publié par higherbeing. AI.tn le référence sans le maintenir ni le recommander.

Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.