How to Use the Blockchair (Universal Blockchain Search Engine & API) MCP in AutoGen

Q: How do AutoGen agents collaborate when using Blockchair (Universal Blockchain Search Engine & API)?

You register Blockchair tools like gettransaction with your AutoGen MCP Server agent. The agents talk to each other, deciding when to fetch Blockchair transaction details to resolve disputes about payment statuses.

Q: How do AutoGen agents inspect internal Ethereum smart contract execution?

They invoke getcontractcalls to fetch internal transactions. The auditing agent parses this Blockchair data and presents the execution flow to the rest of the group chat.

Let your AutoGen agents debate and verify multi-chain transactions with absolute consensus.

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Connect Blockchair (Universal Blockchain Search Engine & API) MCP to AutoGen

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Setup Blockchair (Universal Blockchain Search Engine & API) with AutoGen

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Debating transaction validity using this MCP Server

The `validate_address` and `get_transaction` tools check address formats and retrieve raw transaction details. In AutoGen, a security agent can challenge a transaction's validity while a finance agent uses these Blockchair tools to verify the actual movement of funds. The AutoGen agents discuss the Blockchair findings in a group chat, ensuring they reach a consensus before broadcasting any data. This multi-agent verification prevents errors by forcing the agents to cross-reference the live blockchain data.

Broadcast raw hex transactions through AutoGen agents

The `push_transaction` tool broadcasts a raw hex-encoded transaction to the network. Your AutoGen execution agent proposes the raw hex, but a separate compliance agent must audit the Blockchair transaction details before allowing the broadcast tool to execute. By introducing this strict gatekeeping mechanism, the Blockchair tools are only invoked once all participating agents agree the transaction is safe. It eliminates the risk of sending incorrect or unauthorized transactions to the network.

Audit complex xpubs with AutoGen agent teams

The `get_xpub` and `get_contract_calls` tools retrieve data for entire HD wallets and fetch internal smart contract calls. Your AutoGen team splits the audit task, with one agent parsing the Blockchair xpub history and another checking the contract executions for anomalies. The AutoGen agents compile their individual Blockchair findings and debate the overall risk profile of the wallet. By distributing the workload, you get a highly detailed audit backed by multi-perspective analysis.

Setup guide

Set up Blockchair (Universal Blockchain Search Engine & API) MCP in AutoGen

Prerequisites

Python 3.10+ installed
autogen-ext[mcp] package
Active Vinkius subscription with a valid endpoint token

1

Install AutoGen with MCP
Run pip install "autogen-ext[mcp]" autogen-agentchat. The MCP extension includes mcp_server_tools for stateless tool access.
2

Fetch tools from the MCP
Call mcp_server_tools(SseServerParams(url=...)) with your Vinkius endpoint. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Run your agent
Pass the tools to AssistantAgent and call agent.run(). The agent invokes Blockchair (Universal Blockchain Search Engine & API) tools and returns structured results.

agent.py

from autogen_ext.tools.mcp import SseServerParams, mcp_server_tools
from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient

server_params = SseServerParams(
    url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
)

tools = await mcp_server_tools(server_params)

agent = AssistantAgent(
    name="Blockchair (Universal Blockchain Search Engine & API)_assistant",
    model_client=OpenAIChatCompletionClient(model="gpt-4o"),
    tools=tools,
)

result = await agent.run("List recent Blockchair (Universal Blockchain Search Engine & API) data")
print(result.messages[-1].content)

Get your connection token →

Prerequisites

Python 3.10+ installed
autogen-ext[mcp] + autogen-agentchat
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Same packages as above. McpWorkbench is ideal when your agent needs stateful sessions across multiple tool calls.
2

Use McpWorkbench as context manager
Wrap your agent in async with McpWorkbench(...) to maintain shared state and resources. The workbench manages the full MCP session lifecycle.
3

Run with workbench
Pass workbench=workbench to your agent. State is preserved across multiple tool calls within the same session.

agent.py

from autogen_ext.tools.mcp import McpWorkbench, SseServerParams
from autogen_agentchat.agents import AssistantAgent
from autogen_ext.models.openai import OpenAIChatCompletionClient

server_params = SseServerParams(
    url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
)

async with McpWorkbench(server_params) as workbench:
    agent = AssistantAgent(
        name="Blockchair (Universal Blockchain Search Engine & API)_assistant",
        model_client=OpenAIChatCompletionClient(model="gpt-4o"),
        workbench=workbench,
    )

    result = await agent.run("List recent Blockchair (Universal Blockchain Search Engine & API) data")
    print(result.messages[-1].content)

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 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 AutoGen

You register Blockchair tools like `get_transaction` with your AutoGen MCP Server agent. The agents talk to each other, deciding when to fetch Blockchair transaction details to resolve disputes about payment statuses.

Yes, an AutoGen compliance agent can intercept the workflow before Blockchair's `push_transaction` is called. It analyzes the raw hex and refuses to give consensus if the transaction fails validation.

You configure the StreamableHttpServerParams to handle throttling. The AutoGen agents naturally space out their calls to Blockchair's `get_blockchain_stats` as they deliberate and discuss the data.

They invoke `get_contract_calls` to fetch internal transactions. The auditing agent parses this Blockchair data and presents the execution flow to the rest of the group chat.

Your xpubs and addresses are transmitted securely over SSL directly to the Vinkius MCP gateway. The execution environment is completely stateless, meaning no data is retained or exposed to external entities during agent debates.

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