How to Use the Harmonyscan (Harmony One Block Explorer API) MCP in VS Code Copilot

Q: How can my team start using Harmonyscan (Harmony One Block Explorer API) with VS Code Copilot?

Create a .vscode/mcp.json file in your project's root directory and add the Harmonyscan server details. Commit that file to your Git repository. Every team member who pulls the repo will automatically have the tools available in Copilot Chat.

Equip your entire dev team with direct Harmony One data access inside VS Code Copilot, managed via a single config file.

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Connect Harmonyscan (Harmony One Block Explorer API) MCP to VS Code Copilot

Create your Vinkius account to connect Harmonyscan (Harmony One Block Explorer API) to VS Code Copilot 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 Harmonyscan (Harmony One Block Explorer API) with VS Code Copilot

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Standardize Blockchain Data for Your Team

Check a `.vscode/mcp.json` file into your repository. Now every developer on the team gets the same set of 14 Harmonyscan tools in their VS Code Copilot. This ends the 'works on my machine' problems that come from different developers hitting different API endpoints. Your agent can pull a contract's ABI using `get_abi` or check transaction status with `get_status`. Since everyone shares the same MCP server configuration, you get consistent results across the board, which makes debugging much faster.

Proxy Custom RPC Calls in VS Code Copilot

The Harmonyscan API covers a lot, but sometimes you need a standard JSON-RPC call that isn't a dedicated tool. The `proxy_request` tool lets your agent make those calls directly through the managed Vinkius endpoint. It's a secure way to access lower-level node functions without exposing a raw RPC URL in your codebase. This gives your team serious flexibility. You can build scripts or test functions that rely on specific RPC methods, all from within VS Code. The agent handles the request, so you just tell it what you need and it gets the data back.

Audit Transactions and Balances

Your Copilot agent can act as an auditor. Give it an address and tell it to fetch its history with `get_tx_list` for normal transactions and `get_token_tx` for HRC20 transfers. It can help you trace the flow of funds or identify specific interactions. You can also verify account states directly. Check an address's current funds with `get_balance` or confirm a transaction receipt with `get_tx_receipt_status`. It's a quick way to get ground truth from the blockchain without leaving your editor.

Setup guide

Set up Harmonyscan (Harmony One Block Explorer API) MCP in VS Code Copilot

Prerequisites

VS Code 1.99 or later with GitHub Copilot extension
Active Vinkius subscription with a valid endpoint token

1

Open MCP configuration

Open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and run "MCP: Add Server". Select HTTP (Streamable) as the server type. VS Code will create .vscode/mcp.json in your workspace.
2

Add the Harmonyscan (Harmony One Block Explorer API) MCP

Paste the JSON snippet shown on the right into your .vscode/mcp.json. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Switch to Agent mode

Open Copilot Chat (Cmd+Shift+I / Ctrl+Shift+I) and switch to Agent mode using the dropdown. MCP tools are only available in Agent mode — they do not appear in Edit or Ask modes.
4

Verify the connection

In the Copilot Chat input, type # to list available tools. You should see the Harmonyscan (Harmony One Block Explorer API) tools listed. Try asking: "List my recent Harmonyscan (Harmony One Block Explorer API) transactions" and Copilot will invoke them automatically.

.vscode/mcp.json

{
  "mcpServers": {
    "harmonyscan-harmony-one-block-explorer-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 Harmonyscan. 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 Harmonyscan (Harmony One Block Explorer API) MCP in VS Code Copilot

Create a `.vscode/mcp.json` file in your project's root directory and add the Harmonyscan server details. Commit that file to your Git repository. Every team member who pulls the repo will automatically have the tools available in Copilot Chat.

Yes, if the source code is verified on Harmonyscan. Provide the contract address to your Copilot agent and ask it to use the `get_source_code` tool. It will fetch the code and you can review it directly in VS Code.

Definitely. Just ask your Copilot agent for the current price of ONE. It will use the `get_one_price` tool to get the latest price data and show it to you in the chat panel.

The main benefit is shared, managed access. Your whole team uses the same secure, reliable endpoint via the MCP config file, ensuring consistency. Vinkius handles the infrastructure, so you don't have to manage API keys or worry about rate limits.

Only public on-chain data from the Harmony One network. This includes wallet addresses for `get_balance_multi` or transaction hashes for `get_tx_receipt_status`. Each request is handled by an ephemeral, sandboxed Vinkius server instance, and no private code or user information is ever accessed.

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