How to Use the Etherscan MCP in Claude Code

Q: How do I add the Etherscan MCP Server to Claude Code?

Run claude mcp add --transport http etherscan -- to connect the server to your terminal client. Claude Code instantly maps the MCP tools, letting you query things like getbalance directly from your shell.

Q: Can I pipe Etherscan outputs from Claude Code to other CLI tools?

Yes, Claude Code outputs raw data from tools like gettxlist directly to your stdout. You can pipe this data into jq, awk, or redirect it to a file for further processing in your local shell scripts. Data doesn't lie.

Q: How does Claude Code handle Etherscan rate limits in headless scripts?

Claude Code spaces out requests to endpoints like getlogs to respect the API rate limits. If a rate limit is hit, the MCP client handles the retry logic gracefully, ensuring your CI/CD pipelines don't fail due to transient network blocks.

Q: Can I query multiple balances at once?

Yes, the getbalancemulti tool allows you to check native Ether balances for up to twenty addresses in a single terminal query. This is ideal for batch-checking cold wallets or validator addresses directly from your terminal.

Pipe live Ethereum chain data and contract ABIs directly into your terminal workflows using Claude Code.

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Connect Etherscan MCP to Claude Code

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Setup Etherscan with Claude Code

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Pipe raw blockchain logs into your terminal tools

Claude Code uses `get_logs` and `get_block_no_by_time` to fetch targeted event logs directly from your command line. It queries historical events and pipes the raw JSON output straight into grep, jq, or local shell scripts. This headless execution allows you to run automated cron jobs that check for specific contract events. You can write a shell wrapper that triggers alerts whenever a specific topic or address appears in the latest blocks.

Automate contract verification via Claude Code MCP Server

Claude Code uses `verify_source_code` and `get_source_code` to automate your smart contract deployment pipelines from the command line. It submits your compiled source code and verifies it against the deployed bytecode in a single terminal command. You can integrate this tool into your CI/CD pipelines to ensure every deployment is instantly verified. It checks the verification status programmatically, failing the build if the contract code doesn't match the on-chain deployment.

Monitor network health and gas prices from your terminal

Claude Code uses `get_gas_oracle` and `get_eth_supply` to fetch live network metrics without launching a browser. It prints current gas rates and Ether supply directly to your stdout, keeping your terminal terminal-focused. SREs can use these tools to build quick bash scripts that monitor gas spikes before running high-value transactions. It gives you raw, unadorned network data instantly, removing the need for heavy web dashboards.

Setup guide

Set up Etherscan MCP in Claude Code

Prerequisites

Claude Code CLI installed (npm install -g @anthropic-ai/claude-code)
Active Vinkius subscription with a valid endpoint token

1

Run the add command

Open your terminal and run the command shown on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com. Use --scope user to make it available across all projects.
2

Verify the connection

Start a Claude Code session and type /mcp to list connected servers. You should see etherscan-mcp with a green status indicator.
3

Start using tools

Ask Claude Code something like "Check my latest Etherscan transactions." It will automatically discover and invoke the available Etherscan tools.

Terminal

claude mcp add --transport http etherscan-mcp https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

Get your connection token →

Prerequisites

Claude Code CLI installed
Active Vinkius subscription with a valid endpoint token

1

Open the config file

Create or edit .mcp.json in your project root for project-level scope, or ~/.claude.json for user-level scope.
2

Add the Etherscan MCP

Paste the JSON snippet shown on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Code

Start a new Claude Code session. Type /mcp to confirm the server is connected. The tools will be automatically available in your conversation.

.mcp.json

{
  "mcpServers": {
    "etherscan-mcp": {
      "type": "url",
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Etherscan. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Etherscan MCP in Claude Code

Run `claude mcp add --transport http etherscan -- ` to connect the server to your terminal client. Claude Code instantly maps the MCP tools, letting you query things like `get_balance` directly from your shell.

Yes, Claude Code outputs raw data from tools like `get_tx_list` directly to your stdout. You can pipe this data into jq, awk, or redirect it to a file for further processing in your local shell scripts. Data doesn't lie.

Claude Code spaces out requests to endpoints like `get_logs` to respect the API rate limits. If a rate limit is hit, the MCP client handles the retry logic gracefully, ensuring your CI/CD pipelines don't fail due to transient network blocks.

Yes, the `get_balance_multi` tool allows you to check native Ether balances for up to twenty addresses in a single terminal query. This is ideal for batch-checking cold wallets or validator addresses directly from your terminal.

No, this server only transmits the specific Ethereum addresses, transaction hashes, and block numbers you query to fetch the requested state. Your local terminal environment variables, shell history, and local files remain completely private.

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