How to Use the Duffel MCP in Google ADK

Q: How do I register the Duffel MCP Server with the Google ADK?

Instantiate McpToolset in your Google ADK script using the StreamableHttpServerParameters pointing to your Vinkius URL for Duffel. Then, pass the Duffel toolset into your Google ADK LlmAgent tools parameter inside your Python script.

Q: Can my Google ADK agent modify an existing Duffel reservation?

Yes, your Google ADK agent can call Duffel's changeorder to request modifications or cancelorder to void a ticket, depending on the airline's specific booking rules.

Connect Gemini models to live airline and hotel APIs using the Google ADK for enterprise Duffel travel coordination.

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Connect Duffel MCP to Google ADK

Create your Vinkius account to connect Duffel to Google ADK 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 Duffel with Google ADK

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Enterprise travel search via Google ADK

This integration lets your Google ADK Gemini models query live Duffel travel databases directly. Your Google ADK agent uses this Duffel MCP Server with `create_offer_request` and `list_offers` to pull real-time flight options into your enterprise application. Using the Google ADK, you can feed these raw Duffel travel options directly into your Vertex AI pipelines. The Google ADK agent can process thousands of Duffel flight options using Gemini's long context window to find the best route.

Automate hotel bookings with Google ADK

Your Google ADK enterprise agents can search and book lodging using Duffel's `search_stays` and `book_stay`. This maps Duffel hotel searches to your existing customer databases running on Google Cloud through the Google ADK. By combining this Duffel MCP Server with the Google ADK, your agent can cross-reference hotel options with BigQuery data. The Google ADK agent can run Duffel's `fetch_stay_rates` and compare rates against corporate travel policies automatically.

Verify prices and process payments

Avoid pricing errors by having your Google ADK agent run Duffel's `price_offer` to lock in flight prices before booking. Once verified, the Google ADK agent executes Duffel's `create_order` and handles the transaction using `create_payment`. The Google ADK manages these Duffel transactions securely within your Google Cloud infrastructure. You can track Duffel payment states with `get_payment` inside your Google ADK logs to keep your internal accounting ledgers updated in real time.

Setup guide

Set up Duffel 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 Duffel 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="Duffel_agent",
    model="gemini-2.0-flash",
    instruction="You have access to Duffel tools via MCP.",
    tools=mcp_tools,
)

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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 Duffel. 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 Duffel MCP in Google ADK

Instantiate `McpToolset` in your Google ADK script using the `StreamableHttpServerParameters` pointing to your Vinkius URL for Duffel. Then, pass the Duffel toolset into your Google ADK `LlmAgent` tools parameter inside your Python script.

Yes, you can have your Google ADK agent fetch Duffel flight offers using `list_offers`, format the JSON payload, and write it directly to a BigQuery table for long-term pricing analysis.

The Google ADK handles standard HTTP retries, but you should configure your Google ADK agent's loop to avoid rapid consecutive calls to Duffel's `create_offer_request` or `search_stays` to stay within API limits.

Yes, your Google ADK agent can call Duffel's `change_order` to request modifications or `cancel_order` to void a ticket, depending on the airline's specific booking rules.

All credit card details and guest names are transmitted over encrypted TLS directly to Duffel's endpoints. Vinkius runs the Duffel MCP Server in an ephemeral sandbox, meaning no sensitive financial records persist on Google ADK's execution environment.

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