How to Use the Etherscan MCP in OpenAI Agents SDK

Q: Can I audit smart contracts using Etherscan data within OpenAI Agents SDK?

Yes. You can use the getsourcecode and getabi tools to retrieve contract data for your agent to review. It is a direct pipe from the chain to your agent's context window.

Query EVM data directly in your OpenAI Agents SDK production flows. Get balances and transaction logs without custom API glue.

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Connect Etherscan MCP to OpenAI Agents SDK

Create your Vinkius account to connect Etherscan to OpenAI Agents SDK 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 OpenAI Agents SDK

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Real-time balance and transaction lookups

Your agent fetches wallet data on demand. Use `get_balance` or `get_tx_list` to pull current chain state directly into your agent's reasoning loop. Stop writing custom HTTP wrappers for every endpoint. This MCP Server lets your agent execute 19 distinct blockchain queries without leaving the OpenAI environment.

Smart contract analysis inside OpenAI Agents SDK

Verify contract logic by pulling source code into your agent's context. The `get_source_code` tool allows for deep inspection of deployed bytecode. Automate your security audits by feeding the results of `get_abi` into your analysis chain. It's the fastest way to confirm contract behavior before your agent proceeds.

Efficient gas and market tracking

Feed current network conditions into your decision engine. Call `get_gas_oracle` to get real-time fee estimates before your agent initiates a transaction. Access `get_eth_price` to keep your agent informed of market volatility. This server keeps your logic grounded in live chain data.

Setup guide

Set up Etherscan MCP in OpenAI Agents SDK

Prerequisites

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

1

Install the SDK

Run pip install openai-agents to install the OpenAI Agents SDK. The MCP integration is built-in — no extra dependencies needed.
2

Connect via SSE transport

Use MCPServerSse with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. The SDK auto-discovers all Etherscan tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives Etherscan tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate Etherscan tools and returns structured results. Copy the full example on the right to get started.

agent.py

import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerSse

async def main():
    async with MCPServerSse(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as server:
        agent = Agent(
            name="Etherscan Agent",
            instructions="You have access to Etherscan tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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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 OpenAI Agents SDK

It connects via the standard protocol to expose tools directly to your agent. You configure the server endpoint, and the agent auto-discovers all 19 available blockchain tools.

Yes. You can use the `get_source_code` and `get_abi` tools to retrieve contract data for your agent to review. It is a direct pipe from the chain to your agent's context window.

You need to manage your request frequency. The server follows standard public API limits, so keep your agent's polling intervals reasonable to avoid 429 errors.

The server returns raw data from the blockchain. Your agent is responsible for validating the response against your specific business logic.

Your key is used server-side to authenticate requests. We do not store your credentials, and the connection remains ephemeral for the duration of your agent's session.

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