GasNow for AI assistants
Give ChatGPT, Claude, Cursor or any MCP-compatible assistant live access to GasNow: what it costs to send USDT on every network, exchange withdrawal fees, bridge costs, gas and the market. Free, no key.
MCP server URL: https://mddqwppgucgzefzddajy.supabase.co/functions/v1/mcp
Claude
Settings → Connectors → Add custom connector → name it GasNow and paste the URL above. In Claude Code: claude mcp add --transport http gasnow https://mddqwppgucgzefzddajy.supabase.co/functions/v1/mcp
ChatGPT
With developer mode enabled: Settings → Connectors → Create → paste the URL above (no authentication). For a custom GPT, add an Action and import the schema from https://gasnow.tools/openapi.json.
Cursor, Windsurf and other clients
{
"mcpServers": {
"gasnow": { "url": "https://mddqwppgucgzefzddajy.supabase.co/functions/v1/mcp" }
}
}
Tools
| Tool | What it returns |
|---|---|
get_network_fees | Cost to send the native coin, USDT/USDC and a swap on 12 networks (USD and BRL) |
get_exchange_withdrawal_fees | Withdrawal fees for USDT, USDC and BTC by exchange and network |
get_bridge_quotes | Cheapest route and cost to move value between networks |
get_gas_price | Live gas on Ethereum, Base, Arbitrum, Optimism, Polygon, BNB Chain, Avalanche |
get_bitcoin_fees | Bitcoin fee rates in sat/vB |
get_market_snapshot | Prices, Fear & Greed, Market Stress, Leverage, halving cycle, trending tokens |
get_crypto_news | Latest crypto headlines with summaries |
Prefer plain HTTP? Use the GasNow gas API or the OpenAPI spec. Machine-readable site guide: llms.txt.
Frequently asked questions
What is MCP?
The Model Context Protocol is the open standard AI assistants such as Claude, ChatGPT and Cursor use to connect to outside tools and data. Adding the GasNow MCP server lets the assistant read GasNow's live numbers while it answers.
Is it free?
Yes. No key and no account. It allows 30 calls per minute per IP, which is plenty for a chat.
What can I ask?
For example: "What is the cheapest network to send USDT right now?", "How much does Binance charge to withdraw USDT on TRC-20?", "What does it cost to bridge USDT from Tron to BNB Chain?", "What is Ethereum gas now?" or "Summarize the crypto market today".