How to Use the Etherscan MCP in Windsurf

Q: Can Windsurf Cascade autonomously verify a contract using Etherscan?

Yes, Cascade chains verifysourcecode with your local build outputs to submit source code directly to the network. It handles the verification handshake and checks the status automatically within your workspace.

Q: How do I configure my Etherscan MCP Server credentials inside Windsurf?

You add your Vinkius token to your mcpconfig.json file to connect the MCP Server to Cascade. The agent immediately discovers all nineteen tools, including getabi and getlogs, without any extra local configuration.

Q: How does Cascade handle large transaction histories?

The gettxlist tool caps responses at 10,000 records to prevent workspace bloat. Cascade processes these blocks of transaction logs sequentially, filtering for specific interaction patterns without freezing your editor.

Let Windsurf Cascade autonomously crawl Ethereum transaction logs and parse smart contract states without stopping to ask.

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Connect Etherscan MCP to Windsurf

Create your Vinkius account to connect Etherscan to Windsurf and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Etherscan with Windsurf

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Audit smart contracts directly inside Windsurf

Cascade uses `get_source_code` and `get_abi` to pull verified Solidity code straight into your editor workspace. It reads the raw contract structure, identifies state variables, and parses the interface without requiring you to copy-paste from a browser tab. Once the files are in place, Cascade automatically runs local static analysis tools or writes tests based on the retrieved ABI. If it spots a vulnerability, it writes a patch and runs a simulation, executing a multi-step audit loop in a single turn.

Track live portfolio balances via Windsurf Cascade

This MCP Server exposes `get_balance_multi` and `get_address_token_balance` so Cascade can instantly check holdings across dozens of wallets. It maps out address portfolios and tracks native Ether alongside ERC-20 tokens without manual API setup. When you ask Cascade to analyze wallet activity, it chains these balance checks with `get_token_tx` to map out asset flow. It correlates balance changes with historical transfers to build a complete profile of on-chain behavior directly in your IDE.

Build real-time gas trackers using Windsurf MCP tools

Cascade uses `get_gas_oracle` and `get_block_number` to monitor current gas prices and block times directly from your active workspace. It pulls live network metrics to help you write gas-optimized deployment scripts or determine the best time to execute a transaction. By feeding this data into your local environment, Cascade calculates gas limits for your smart contract deployments on the fly. It monitors the network state continuously, waiting for gas prices to drop below your target threshold before prompting you to deploy.

Setup guide

Set up Etherscan MCP in Windsurf

Prerequisites

Windsurf IDE installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP configuration

Click the Cascade assistant icon in the sidebar, then click the hammer icon (🔨) at the top of the panel. Select "Configure" to open ~/.codeium/windsurf/mcp_config.json.
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

Refresh MCPs

Go back to the hammer icon (🔨) in Cascade and click "Refresh". Windsurf will detect the new server. No full restart is needed — the connection is hot-reloaded.
4

Verify in Cascade

Start a new Cascade conversation and ask something like "Show my Etherscan payment history." If connected, Cascade will call the Etherscan tools directly. You will see a green dot next to the server name in the MCP panel.

mcp_config.json

{
  "mcpServers": {
    "etherscan-mcp": {
      "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 Windsurf

Cascade handles rate limits by spacing out calls to tools like `get_tx_list` and caching non-volatile contract ABIs locally. Vinkius manages the API key injection behind a single endpoint. Right. So your agent doesn't spam the public endpoints during deep audits.

Yes, Cascade chains `verify_source_code` with your local build outputs to submit source code directly to the network. It handles the verification handshake and checks the status automatically within your workspace.

You add your Vinkius token to your `mcp_config.json` file to connect the MCP Server to Cascade. The agent immediately discovers all nineteen tools, including `get_abi` and `get_logs`, without any extra local configuration.

The `get_tx_list` tool caps responses at 10,000 records to prevent workspace bloat. Cascade processes these blocks of transaction logs sequentially, filtering for specific interaction patterns without freezing your editor.

This tool sends queried Ethereum public addresses, transaction hashes, and contract ABIs directly to the API endpoints to fetch live chain data. Your private keys and local source files never leave your local environment.

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