Etherscan MCP MCP server

The Etherscan MCP server connects AI agents to live onchain data across 60+ supported chains. It allows agents to query balances, transactions, transfers, tokens, contracts, and logs using plain language, with tools for retrieving transaction details and address labels.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by Etherscan

MCP endpoint (Streamable HTTP)

https://mcp-keyless.etherscan.io/mcp

Vendor documentation

What you can do with it

Get a one-liner summary for a specific transaction hash
Retrieve sender, recipient, amount, and input data for a transaction
Confirm if a transaction succeeded via receipt
Label addresses with Etherscan name tags and labels

Tools advertised by the last live check:

get_native_balance
get_transactions
get_internal_transactions
get_token_transfers
get_contract_source
get_contract_abi
get_contract_creation
get_transaction_receipt_status
get_transaction_status
get_gas_oracle
get_block_by_timestamp
get_supported_chains
get_logs
get_transaction_by_hash
get_transaction_receipt
render_etherscan_widget

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http etherscan-mcp https://mcp-keyless.etherscan.io/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add etherscan-mcp --url https://mcp-keyless.etherscan.io/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable etherscan-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "etherscan-mcp": {
      "url": "https://mcp-keyless.etherscan.io/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "etherscan-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp-keyless.etherscan.io/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start etherscan-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "etherscan-mcp": {
      "type": "http",
      "url": "https://mcp-keyless.etherscan.io/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http etherscan-mcp https://mcp-keyless.etherscan.io/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "etherscan-mcp": {
      "url": "https://mcp-keyless.etherscan.io/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "etherscan-mcp": {
      "serverUrl": "https://mcp-keyless.etherscan.io/mcp"
    }
  }
}

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