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Connect Harmonyscan Harmony One Block Explorer AP to your AI

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Pull real-time on-chain data directly into your AI agent.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

ChatGPTClaudeCursorPerplexityGeminiMicrosoft CopilotRaycastMeta AI

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

A futuristic MCP client docking bay
V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 14 capabilities

We ship only the actions that matter.

Capability set01 / 04

01-04

4 capabilities in this set.

Part of 14 available through Harmonyscan.

  1. 01

    Get one supply

    This capability returns the total supply of ONE currently in circulation.

  2. 02

    Get token tx

    Retrieve a list of HRC20 token transfer events.

  3. 03

    Get abi

    Pull the ABI for a smart contract to understand its functions.

  4. 04

    Get balance multi

    Get the ONE balances for several different addresses in a single request.

Capability set02 / 04

05-08

4 capabilities in this set.

Part of 14 available through Harmonyscan.

  1. 05

    Get balance

    Check the ONE balance for a single wallet address.

  2. 06

    Get block reward

    This capability retrieves the rewards issued for a specific block.

  3. 07

    Get logs

    Retrieve event logs from the blockchain.

  4. 08

    Get one price

    Get the most recent market price for the ONE token.

Capability set03 / 04

09-11

3 capabilities in this set.

Part of 14 available through Harmonyscan.

  1. 09

    Get source code

    Use this to pull the verified source code for a specific smart contract.

  2. 10

    Get status

    Verify the execution status of a specific transaction.

  3. 11

    Get tx list internal

    This capability retrieves a list of internal transactions associated with an address.

Capability set04 / 04

12-14

3 capabilities in this set.

Part of 14 available through Harmonyscan.

  1. 12

    Get tx list

    Fetch a list of normal transactions for a given address.

  2. 13

    Get tx receipt status

    Check the status of a transaction receipt to confirm its outcome.

  3. 14

    Proxy request

    This capability allows you to execute standard JSON-RPC methods via a proxy.

Real work

What teams actually run

01

Smart Contract Debugging

A developer asks the agent to pull the ABI of a contract to verify function parameters.

02

Whale Watching

An analyst has the agent monitor specific addresses for large HRC20 token transfers.

03

Transaction Confirmation

A user asks the agent to check if a specific transaction hash was successfully executed.

04

Portfolio Management

A user checks the ONE balances of multiple addresses at once using a single command.

Automate a task

Put Harmonyscan to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

Harmonyscan works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

ClaudeClaudeChatGPTChatGPTGeminiGeminiPerplexityPerplexityGrokGrokMicrosoft CopilotMicrosoft CopilotCursorCursorVS CodeVS CodeWindsurfWindsurfJetBrainsJetBrainsClineClineLangChainLangChainVercel AI SDKVercel AI SDKLovableLovableZ.aiZ.aiRaycastRaycastQwen CodeQwen CodeKimi CodeKimi CodeLe ChatLe Chat

Building your own app? The connector is yours to use.

You don't need a client to put Harmonyscan to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

945ms average. Fast in production.

Harmonyscan is checked daily against the live service.

Daily averagePeak 1174ms
Oct 3Today
Fastest day
744ms
Slowest day
1174ms
14-day trend
Slowing+11%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 14 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Harmonyscan, so you can see the experience inside your AI.

It does not authenticate your account with Harmonyscan. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Harmonyscan Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_hCFVIwT7pV7N02KfZ6z0UBU5q1pzYMKhyLIS3MJh/mcp

Claude Desktop

Follow the steps below to connect in seconds.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 3Click Add and start a new chat — Harmonyscan capabilities are ready to use.
Configuration · claude_desktop_config.jsonCopy
{
  "mcpServers": {
    "harmonyscan-harmony-one-block-explorer-api-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_hCFVIwT7pV7N02KfZ6z0UBU5q1pzYMKhyLIS3MJh/mcp"
    }
  }
}
  • Claude
  • ChatGPT
  • Cursor
  • VS Code
  • Windsurf
  • Claude Code
  • JetBrains
  • Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Harmonyscan in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Harmonyscan owners hand off.

This MCP is built for professionals working within the Harmony One ecosystem who need to bridge the gap between raw blockchain data and actionable insights.

  • 01

    Web3 Developers

    They hand off the task of fetching contract ABIs and source code to their AI while coding in an IDE.

  • 02

    Crypto Analysts

    They use the agent to automate the tracking of token movements and whale activity.

  • 03

    DeFi Users

    They use natural language to check their own wallet balances and transaction statuses.

FAQ

Questions Harmonyscan owners ask.

  • 01

    How do I connect this MCP to my AI client?

    You subscribe to the MCP through Vinkius and then connect your client, such as Claude or Cursor, in one click. Vinkius handles the hosting and management.

  • 02

    Do I need my own Harmonyscan API key?

    Yes, you will need to enter your Harmonyscan API key to authenticate your requests to the network.

  • 03

    Can I use this with Cursor or VS Code?

    Yes, this MCP is compatible with any MCP-compatible client, including Cursor, Windsurf, and VS Code.

  • 04

    What kind of blockchain data can my agent access?

    Your agent can access ONE balances, transaction lists, internal transactions, HRC20 token transfers, smart contract source code, and network metrics like ONE price.

  • 05

    Is it possible to check if a transaction failed?

    Yes, you can use the capabilities to check the execution status or the transaction receipt status to see if a transaction was successful.

  • 06

    Can I check the balance of multiple Harmony addresses at once?

    Yes! Use the get_balance_multi capability and provide a comma-separated list of addresses (up to 20). The agent will return the ONE balance for each address in a single response.

  • 07

    How do I verify if a specific transaction was successful or failed?

    You can use the get_status capability with the transaction hash. It returns a status code where '1' indicates success and '0' indicates failure, along with any available error messages.

  • 08

    Is it possible to retrieve the source code of a smart contract?

    Yes, provided the contract is verified on Harmonyscan. Use the get_source_code capability with the contract address to get the Solidity source code, compiler version, and optimization settings.

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