MCPFax On-Chain Toolkit

Connect Remote server

claude mcp add --transport http onchain-toolkit https://onchain-toolkit.bowling-anthony.workers.dev/mcp

{
  "mcpServers": {
    "onchain-toolkit": {
      "url": "https://onchain-toolkit.bowling-anthony.workers.dev/mcp"
    }
  }
}

{
  "servers": {
    "onchain-toolkit": {
      "type": "http",
      "url": "https://onchain-toolkit.bowling-anthony.workers.dev/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://onchain-toolkit.bowling-anthony.workers.dev/mcp

Tools 6 found in our last check

• request_data

  FREE, no payment. Describe in your own words the data you are trying to buy — anything, not just on-chain data — and get back whether we operate a service that supplies it, with the MCP endpoint if so. Every request is catalogued so repeatedly-requested data gets built. Nothing…

• demand_report

  FREE, no payment. The aggregate of what agents have told us they are looking for, most-requested first, with the categories nothing available yet serves.

• gas_now

  Live gas price on Ethereum, Base, Arbitrum, Optimism or Polygon — in wei and gwei, plus what a plain 21,000-gas transfer would cost in the native token, which is the number you actually budget with. Pass several chains comma-separated to compare where to execute. Call this immed…

• token_info

  Read an ERC-20's name, symbol, decimals and total supply straight from the contract on the chain you name, and confirm the address actually has code there. Use before quoting an amount or building a transfer: getting decimals wrong is the classic way to send 1,000,000x the inten…

• tx_status

  Status of a transaction by hash: success, failed or still pending, with the block it landed in, sender and recipient, value moved, gas used, the fee actually paid, and how many logs it emitted. Use to confirm an action you took really settled rather than assuming it did. An unkn…

• address_info

  Native balance, the next nonce to use, and whether the address holds contract code — the three things needed before sending from or to an address. Pass 'token' as well to read an ERC-20 balance for the same address in the same call. Values are read at the latest block, so a reor…

Details

More data and analytics servers See all

• topo^alpin

  Avalanche bulletins, mountain weather, stations, huts, ski and snowshoe tours in the Alps.

• MedBillAnalyzer

  Compares a medical bill with the insurer's Explanation of Benefits and lists where they disagree.

• Brush Pack

  Paint and wallpaper amounts, weather checks and lead paint safety for UK decorators' AI

• Ridge Pack

  Roof take-offs, weather windows, building regs and storm triage for UK roofers' AI assistants

• Agent Data Tools: Everyday data

  29 tools: weather, time zones, sun and moon, earthquakes, countries. 25 free calls.

• Agent Data Tools: Utilities

  105 tools: JSON repair, CSV, hashes, cron, dates, units, validators. 25 free calls.