How to Use the Blockchair (Universal Blockchain Search Engine & API) MCP in OpenAI Agents SDK

Q: Can my OpenAI Agents SDK system handle HD wallets using Blockchair (Universal Blockchain Search Engine & API)?

Yes. The getxpub tool retrieves the entire history and balance of an HD wallet. Your agent parses this structured data to track balances across multiple derived addresses.

Q: How does Blockchair (Universal Blockchain Search Engine & API) prevent my OpenAI Agents SDK agent from querying massive datasets?

You set hard limits within your query parameters. Use filterblocks with specific time ranges to prevent the agent from requesting millions of blocks at once.

Q: Can I track smart contract interactions with this MCP setup?

Yes, use getcontractcalls and geterc20tokenaddress. Your agent reads internal Ethereum transactions and ERC-20 token balances to verify contract states.

Get production-ready multi-chain data directly inside your OpenAI Agents SDK workflows with this secure MCP server.

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Connect Blockchair (Universal Blockchain Search Engine & API) MCP to OpenAI Agents SDK

Create your Vinkius account to connect Blockchair (Universal Blockchain Search Engine & API) 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 Blockchair (Universal Blockchain Search Engine & API) with OpenAI Agents SDK

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Query Blockchains with OpenAI Agents SDK

The `filter_blocks` and `filter_transactions` tools let your OpenAI Agents SDK pipeline query raw ledger data using SQL-like filters. Your agents parse transaction counts, timestamps, and fees directly, feeding clean data into your decision loops. Because the SDK enforces guardrails, your agents run these heavy queries safely. You get structured blockchain data back without worrying about runaway loops or malformed API requests.

Validate and Inspect Addresses Safely

The `validate_address` and `get_address` tools check network formats and retrieve current balances before your agent takes action. If an address is invalid, the agent halts the run before wasting gas or executing a bad transaction. By using this MCP server, your OpenAI Agents SDK system traces every address lookup on your dashboard. You see exactly what address was checked and when, keeping your production logs clean.

Broadcast Raw Transactions via Agent Handoffs

The `push_transaction` tool broadcasts raw hex-encoded transactions directly to Bitcoin or Ethereum networks. Your execution agent receives the payload from a drafting agent and sends it to the network. This setup isolates the critical broadcasting step. The OpenAI Agents SDK handles the transition between agents, ensuring only authorized tools run the final broadcast.

Setup guide

Set up Blockchair (Universal Blockchain Search Engine & API) 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 Blockchair (Universal Blockchain Search Engine & API) tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives Blockchair (Universal Blockchain Search Engine & API) tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate Blockchair (Universal Blockchain Search Engine & API) 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="Blockchair (Universal Blockchain Search Engine & API) Agent",
            instructions="You have access to Blockchair (Universal Blockchain Search Engine & API) 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 Blockchair. 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 Blockchair (Universal Blockchain Search Engine & API) MCP in OpenAI Agents SDK

Install openai-agents via pip. Initialize the connection using MCPServerStreamableHttp pointing to your Vinkius endpoint, then pass it directly into your Agent constructor's mcp_servers list.

Yes. The `get_xpub` tool retrieves the entire history and balance of an HD wallet. Your agent parses this structured data to track balances across multiple derived addresses.

You set hard limits within your query parameters. Use `filter_blocks` with specific time ranges to prevent the agent from requesting millions of blocks at once.

Yes, use `get_contract_calls` and `get_erc20_token_address`. Your agent reads internal Ethereum transactions and ERC-20 token balances to verify contract states.

Your queried addresses and xpubs are processed in an ephemeral, zero-trust V8 sandbox. Vinkius handles the authentication token, ensuring your target node credentials never leak to the public internet.

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