How to Use the Harmonyscan (Harmony One Block Explorer API) MCP in Google ADK

Q: Can Google ADK filter which Harmonyscan (Harmony One Block Explorer API) tools the agent sees?

Yes. You can restrict the exposed tools using the toolnames filter. If you only want the agent checking balances, limit it to getbalance and getbalancemulti.

Q: How does Harmonyscan (Harmony One Block Explorer API) handle smart contracts in Google ADK?

The server uses getabi and getsourcecode to fetch contract data. Gemini's massive context window easily ingests entire uncompiled Solidity files for deep architectural analysis.

Feed massive Harmony blockchain datasets into Google ADK agents using Gemini's long context.

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Connect Harmonyscan (Harmony One Block Explorer API) MCP to Google ADK

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Setup Harmonyscan (Harmony One Block Explorer API) with Google ADK

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Dump chain data into Google ADK

Gemini models can hold massive amounts of data. You can pull thousands of transaction records using `get_tx_list` and `get_tx_list_internal` directly into the agent's context window. It handles the volume easily. The agent reads the entire history at once. It cross-references HRC20 token transfers from `get_token_tx` against enterprise data you already store in BigQuery, making connections human analysts miss.

Analyze contract events at scale

Enterprise applications require deep event monitoring. Use `get_logs` to pull specific smart contract emissions and feed them into Vertex AI processing pipelines. The data flows exactly where you need it. If an event looks suspicious, the agent automatically triggers `get_tx_receipt_status` and `get_status` to verify execution. You build automated compliance checks that run entirely on Google Cloud infrastructure.

Map network state via MCP

Expose the Harmonyscan tools through a McpToolset instance. Your LlmAgent immediately gains access to `get_one_supply` and `get_one_price` for real-time economic tracking via this MCP integration. Need something specific? The `proxy_request` tool lets you bypass the standard endpoints and hit raw JSON-RPC methods. You filter which tools the agent sees using the tool_names argument during setup.

Setup guide

Set up Harmonyscan (Harmony One Block Explorer API) MCP in Google ADK

Prerequisites

Python 3.10+ installed
google-adk package (pip install google-adk)
Active Vinkius subscription with a valid endpoint token

1

Install Google ADK

Run pip install google-adk to install the Agent Development Kit. MCP support is included via the McpToolset class.
2

Connect via SSE transport

Use McpToolset.from_server() with SseServerParams pointing to your Vinkius endpoint. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Create an LlmAgent

Pass the returned mcp_tools list directly to LlmAgent(tools=mcp_tools). The ADK maps each MCP tool to a native Gemini function call — no manual schema definitions required.
4

Run with any Gemini model

The agent works with any Gemini model (gemini-2.0-flash, gemini-2.5-pro, etc.). Copy the full example on the right to get started with Harmonyscan (Harmony One Block Explorer API) tools in your ADK agent.

agent.py

from google.adk.agents import LlmAgent
from google.adk.tools.mcp_tool.mcp_toolset import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import SseServerParams

# Connect to the MCP via SSE
mcp_tools, exit_stack = await McpToolset.from_server(
    connection_params=SseServerParams(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    )
)

# Create your agent with auto-discovered tools
agent = LlmAgent(
    name="Harmonyscan (Harmony One Block Explorer API)_agent",
    model="gemini-2.0-flash",
    instruction="You have access to Harmonyscan (Harmony One Block Explorer API) tools via MCP.",
    tools=mcp_tools,
)

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Common questions about Harmonyscan (Harmony One Block Explorer API) MCP in Google ADK

Install the google-adk package. Initialize a McpToolset with StreamableHttpServerParameters pointing to your Vinkius URL, then pass it to your LlmAgent tools array.

Yes. You can restrict the exposed tools using the tool_names filter. If you only want the agent checking balances, limit it to get_balance and get_balance_multi.

The server uses get_abi and get_source_code to fetch contract data. Gemini's massive context window easily ingests entire uncompiled Solidity files for deep architectural analysis.

The integration supports both Stdio and HTTP transports. For cloud-deployed agents, the HTTP transport connects directly to the managed endpoint.

Yes. The infrastructure only processes public contract addresses and transaction hashes. The V8 isolate spins up ephemerally for your request and terminates immediately, leaving zero persistent logs of your specific network queries.

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