How to Use the Ankr (Web3 Node API) MCP in Claude

Q: How do I connect the Ankr (Web3 Node API) MCP Server to my Claude Desktop app?

It's easy to set up. Open your local configuration file at /Library/Application Support/Claude/claudedesktopconfig.json and add the Ankr server under the mcpServers key. Paste the Vinkius command and your unique endpoint token, then restart Claude Desktop to see the new tools under the hammer icon.

Q: How does Claude Desktop handle gas estimation using Ankr (Web3 Node API)?

Your agent calls ethestimateGas to calculate the exact gas units required for your transaction payload. It then fetches the current native balance using ethgetBalance to verify if the target wallet has sufficient funds to cover the execution.

Q: Does this server support Solana network queries?

Yes, this server includes Solana-specific tools like getAccountInfo and getBalance alongside EVM tools. Your agent automatically routes queries to the correct RPC node based on the address format you provide in chat.

Run multi-chain Web3 queries and check live smart contract state directly inside Claude Desktop.

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Connect Ankr (Web3 Node API) MCP to Claude Desktop

Create your Vinkius account to connect Ankr (Web3 Node API) to Claude Desktop 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 Ankr (Web3 Node API) with Claude Desktop

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Inspect live wallet balances and NFT ownership in chat

The `ankr_getAccountBalance` tool pulls real-time token balances for any wallet address across multiple EVM chains directly into your Claude Desktop chat window. You don't have to copy-paste data from block explorers or toggle between browser tabs when analyzing user portfolios. Your agent reads the raw token balances and formats them instantly. To map out a user's entire digital footprint, your agent uses `ankr_getNFTsByOwner` and `ankr_getInteractions` to track historical chain activity and current NFT holdings. This workflow runs locally through the desktop app's stdio transport, letting you feed on-chain data directly into your local analysis scripts.

Query raw block data and contract storage with this MCP Server

The `eth_getBlockByNumber` tool fetches complete block details directly through your Claude Desktop interface. When debugging smart contracts, your agent calls `eth_getStorageAt` and `eth_getCode` to inspect contract state and raw bytecode without leaving your active chat session. This setup uses the Vinkius zero-trust sandbox to securely run queries. Your local Claude Desktop client connects to the remote Ankr endpoint, executing `eth_call` to read contract state on the fly while keeping your local environment isolated.

Simulate and submit transactions on EVM and Solana

The `eth_simulateV1` tool lets your agent dry-run complex transaction bundles before they touch the network. For Solana transactions, your agent uses `simulateTransaction` and `getLatestBlockhash` to verify transaction parameters and prevent costly execution failures. Once verified, the agent uses `eth_sendRawTransaction` or `sendTransaction` to submit the signed payload to the network. You get the transaction receipt back instantly via `eth_getTransactionReceipt`, allowing you to inspect execution logs and gas consumption in the same thread.

Setup guide

Set up Ankr (Web3 Node API) MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The Ankr (Web3 Node API) MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the Ankr (Web3 Node API) MCP configuration

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

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under ankr-web3-node-api-mcp.

json

{
  "mcpServers": {
    "ankr-web3-node-api-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 Ankr. 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 Ankr (Web3 Node API) MCP in Claude Desktop

It's easy to set up. Open your local configuration file at `~/Library/Application Support/Claude/claude_desktop_config.json` and add the Ankr server under the `mcpServers` key. Paste the Vinkius command and your unique endpoint token, then restart Claude Desktop to see the new tools under the hammer icon.

Yes, you can connect this server as a custom connector in your browser settings. Paste your Vinkius remote MCP server URL into the Integrations tab to let your web-based agent query live blockchain data on any device without installing a local daemon.

Your agent calls `eth_estimateGas` to calculate the exact gas units required for your transaction payload. It then fetches the current native balance using `eth_getBalance` to verify if the target wallet has sufficient funds to cover the execution.

Yes, this server includes Solana-specific tools like `getAccountInfo` and `getBalance` alongside EVM tools. Your agent automatically routes queries to the correct RPC node based on the address format you provide in chat.

This MCP server only processes public blockchain addresses, transaction hashes, and smart contract payloads. Vinkius runs the connector in an isolated, ephemeral V8 sandbox, ensuring your private keys and local configuration files are never exposed to the public RPC nodes or stored on external servers.

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