Base blockchain tools for AI agents

6 tools that give any MCP-compatible AI agent real-time access to Base network data. Gas prices, balances, transactions, token lookups, block info, and contract detection.

Live Data

Available Tools

⛽base_gas

Current gas price + estimated TX cost

💰base_balance

ETH balance for any address

🔍base_tx

Transaction lookup by hash

🪙base_token_balance

ERC-20 token balance check

📦base_block

Block details (latest or by number)

📋base_contract

Contract detection + bytecode size

Quick Start

claude_desktop_config.json

{
  "mcpServers": {
    "base-chain": {
      "command": "npx",
      "args": ["tsx", "src/index.ts"],
      "cwd": "/path/to/base-chain-mcp"
    }
  }
}

Example Queries

>What's the current gas price on Base?

>Check the ETH balance of vitalik.eth on Base

>Look up transaction 0xabc... on Base

>Is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 a contract?

>What's in the latest Base block?