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GasNow

by j0n777 · remote · no sign-in to list tools · v1.0.1 · published by GitHub user j0n777

Live crypto fees: USDT transfer costs on 12 networks, exchange withdrawals, bridges and gas.

Final · 1
CompareRegistry entry

7 tools: 1 do something that can't be undone and 6 only read.

Scanned Oct 21, 2026

1 check matched something in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http gasnow https://mcp.gasnow.tools

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnget_exchange_withdrawal_fees

    The server marks "get_exchange_withdrawal_fees" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "get_exchange_withdrawal_fees" says "get": a word for reading.

    What this check looks for

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

7 tools

Can't be undone 1Claude Code: ask
  • get_exchange_withdrawal_feesWithdrawal fee charged by exchanges (Binance, Mercado Bitcoin, Foxbit, Bitget, KuCoin, HTX) for USDT, USDC and BTC on each network, in coin units and USD.1 finding

    Why it is in this group

    • The name "get_exchange_withdrawal_fees" says "get": a word for reading.
    • The description's first verb is "withdrawal": a word that usually means money moves, which cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    Findings

    • Warn

      The server marks "get_exchange_withdrawal_fees" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "get_exchange_withdrawal_fees" says "get": a word for reading.

      What this check looks for
    Description, as the server wrote it
    Withdrawal fee charged by exchanges (Binance, Mercado Bitcoin, Foxbit, Bitget, KuCoin, HTX) for USDT, USDC and BTC on each network, in coin units and USD. Filter by exchange, coin and network.

    Annotations the server declares

    • title: Exchange withdrawal fees
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
Only reads 6Claude Code: allow
  • get_bitcoin_feesLive Bitcoin fee rates in sat/vB (fastest, half hour, hour, economy) from the mempool.No findings

    Why it is in this group

    • The name "get_bitcoin_fees" says "get": a word for reading.
    Description, as the server wrote it
    Live Bitcoin fee rates in sat/vB (fastest, half hour, hour, economy) from the mempool.

    Annotations the server declares

    • title: Bitcoin fee rates
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • get_bridge_quotesCheapest live route and total cost to move about $100 of USDT/USDC/ETH/BTC between networks (e.g.No findings

    Why it is in this group

    • The name "get_bridge_quotes" says "get": a word for reading.
    Description, as the server wrote it
    Cheapest live route and total cost to move about $100 of USDT/USDC/ETH/BTC between networks (e.g. Tron to BNB Chain, Ethereum to Base, BTC to Ethereum), with time and bridge used. Filter by source and destination network.

    Annotations the server declares

    • title: Bridge costs between networks
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • get_crypto_newsLatest English crypto headlines with short summaries (from Jornal Bitcoin), newest first.No findings

    Why it is in this group

    • The name "get_crypto_news" says "get": a word for reading.
    Description, as the server wrote it
    Latest English crypto headlines with short summaries (from Jornal Bitcoin), newest first.

    Annotations the server declares

    • title: Latest crypto news
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • get_gas_priceLive gas price (gwei) on an EVM chain: base fee and slow/standard/fast/instant tiers from the last 20 blocks.No findings

    Why it is in this group

    • The name "get_gas_price" says "get": a word for reading.
    Description, as the server wrote it
    Live gas price (gwei) on an EVM chain: base fee and slow/standard/fast/instant tiers from the last 20 blocks.

    Annotations the server declares

    • title: Gas price on an EVM chain
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • get_market_snapshotEverything on the GasNow dashboard at once as Markdown: Ethereum gas, Bitcoin fees, BTC/ETH/SOL/TON prices, market cap, Fear & Greed, Altseason, Market Stress Index, Leverage Index…No findings

    Why it is in this group

    • The name "get_market_snapshot" says "get": a word for reading.
    Description, as the server wrote it
    Everything on the GasNow dashboard at once as Markdown: Ethereum gas, Bitcoin fees, BTC/ETH/SOL/TON prices, market cap, Fear & Greed, Altseason, Market Stress Index, Leverage Index, derivatives, stablecoin supply, halving cycle, trending tokens.

    Annotations the server declares

    • title: Crypto market snapshot
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • get_network_feesUSD (and BRL) cost to send the native coin, send USDT/USDC (to a holder and to a new address) and do a swap on 12 networks: Ethereum, Base, Optimism, Arbitrum, Polygon, BNB Chain, …No findings

    Why it is in this group

    • The name "get_network_fees" says "get": a word for reading.
    Description, as the server wrote it
    USD (and BRL) cost to send the native coin, send USDT/USDC (to a holder and to a new address) and do a swap on 12 networks: Ethereum, Base, Optimism, Arbitrum, Polygon, BNB Chain, Avalanche, Solana, Tron, TON, Bitcoin, Litecoin. Use it to answer "what is the cheapest network to send USDT".

    Annotations the server declares

    • title: Cost to send crypto on each network
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http gasnow https://mcp.gasnow.tools

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__gasnow__get_gas_price",
      "mcp__gasnow__get_bitcoin_fees",
      "mcp__gasnow__get_network_fees",
      "mcp__gasnow__get_bridge_quotes",
      "mcp__gasnow__get_market_snapshot",
      "mcp__gasnow__get_crypto_news"
    ],
    "ask": [
      "mcp__gasnow__get_exchange_withdrawal_fees"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as gasnow. Review it before you use it.