Agent Data Tools: Chain data

{
  "mcpServers": {
    "io.github.Nutshell2000/agent-data-tools-chain": {
      "url": "https://agent-data-tools.revmesh2074.workers.dev/mcp/chain"
    }
  }
}

Indexed tools

Tool metadata and schemas come from the remote server and are untrusted. Indexing only lists tools; it never calls them.

25 shown · authentication unknown

• ERC-20 token approval check on Base: check how much of a token a spender is approved to move on Base

  base_allowance

  Check how much of a wallet's ERC-20 token a spender contract is approved to move on Base: the raw and formatted allowance, the token symbol and decimals, and whether the approval is unlimited. Use before a swap or deposit to see if an approve transaction is needed, and to audit a wallet for risky unlimited approvals. Price $0.002/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.

  Schema valid · SHA-256 28a168fa31ca…

  View input schema

  {
    "type": "object",
    "properties": {
      "token": {
        "type": "string",
        "description": "ERC-20 token contract address on Base (0x...)"
      },
      "owner": {
        "type": "string",
        "description": "Wallet address that holds the token (0x...)"
      },
      "spender": {
        "type": "string",
        "description": "Address allowed to spend, usually a router or protocol contract (0x...)"
      }
    },
    "required": [
      "token",
      "owner",
      "spender"
    ],
    "$schema": "http://json-schema.org/draft-07/schema#"
  }

• Base native balance

  base_balance

  Native ETH balance (eth_getBalance) of any 0x wallet address on Base at the latest block, in wei and in ETH. Use to check whether a wallet can pay gas or a transfer; for ERC-20 tokens use base_token_balance, for all holdings at once use wallet_portfolio. A malformed address is rejected with 400, uncharged. Example: address=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045. Price $0.01/call via x402 USDC or a card key (/credits), first 25 free; failed calls free. Reads or computes only and changes nothing; each call is charged, so repeats are not free.