How do I get a Duffel Access Token?

Sign up for a developer account at the [**Duffel Dashboard**](https://app.duffel.com/). You can generate both 'test' tokens for development and 'live' tokens for real bookings.

Can I make real bookings with this agent?

Yes, if you provide a 'live' access token, the agent can perform real flight bookings. We recommend using a 'test' token first to understand the search and booking flow.

Duffel Flights MCP Server for Google ADK 8 tools — connect in under 2 minutes

Name: Duffel Flights
Availability: InStock
Author: Vinkius

google.github.io/adk-docs/tools/mcp-tools

Built by Vinkius GDPR 8 Tools SDK

Google Agent Development Kit (ADK) is Google's framework for building production AI agents. Add Duffel Flights as an MCP tool provider through Vinkius and your ADK agents can call every tool with full schema introspection.

Get MCP Server for AI Agents

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Vinkius supports streamable HTTP and SSE.

python

from google.adk.agents import Agent
from google.adk.tools.mcp_tool import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import (
    StreamableHTTPConnectionParams,
)

# Your Vinkius token. get it at cloud.vinkius.com
mcp_tools = McpToolset(
    connection_params=StreamableHTTPConnectionParams(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
    )
)

agent = Agent(
    model="gemini-2.5-pro",
    name="duffel_flights_agent",
    instruction=(
        "You help users interact with Duffel Flights "
        "using 8 available tools."
    ),
    tools=[mcp_tools],
)

Fully ManagedVinkius Servers

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High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About Duffel Flights MCP Server

Connect your AI agent to Duffel, the modern infrastructure for travel. This integration allows you to search for real-time flight offers, manage bookings (orders), and access a comprehensive directory of airlines, airports, and aircraft through natural conversation.

Google ADK natively supports Duffel Flights as an MCP tool provider. declare Vinkius Edge URL and the framework handles discovery, validation, and execution automatically. Combine 8 tools with Gemini's long-context reasoning for complex multi-tool workflows, with production-ready session management and evaluation built in.

What you can do

Flight Search — Create offer requests to find the best flights based on origin, destination, dates, and cabin class
Booking Management — Create flight orders (instant or hold) and retrieve detailed reservation information
Payment Processing — Pay for flight orders that were previously held directly via the agent
Travel Directory — List and inspect aircraft models, airlines, and airports worldwide with their respective IATA codes
Order Oversight — List all flight bookings associated with your account to track your travel history

The Duffel Flights MCP Server exposes 8 tools through the Vinkius. Connect it to Google ADK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Duffel Flights to Google ADK via MCP

Follow these steps to integrate the Duffel Flights MCP Server with Google ADK.

Install Google ADK

Run pip install google-adk

Replace the token

Replace [YOUR_TOKEN_HERE] with your Vinkius token

Create the agent

Save the code above and integrate into your ADK workflow

Explore tools

The agent will discover 8 tools from Duffel Flights via MCP

Why Use Google ADK with the Duffel Flights MCP Server

Google ADK provides unique advantages when paired with Duffel Flights through the Model Context Protocol.

Google ADK natively supports MCP tool servers. declare a tool provider and the framework handles discovery, validation, and execution

Built on Gemini models, ADK provides long-context reasoning ideal for complex multi-tool workflows with Duffel Flights

Production-ready features like session management, evaluation, and deployment come built-in. not bolted on

Seamless integration with Google Cloud services means you can combine Duffel Flights tools with BigQuery, Vertex AI, and Cloud Functions

Duffel Flights + Google ADK Use Cases

Practical scenarios where Google ADK combined with the Duffel Flights MCP Server delivers measurable value.

Enterprise data agents: ADK agents query Duffel Flights and cross-reference results with internal databases for comprehensive analysis

Multi-modal workflows: combine Duffel Flights tool responses with Gemini's vision and language capabilities in a single agent

Automated compliance checks: schedule ADK agents to query Duffel Flights regularly and flag policy violations or configuration drift

Internal tool platforms: build self-service agent platforms where teams connect their own MCP servers including Duffel Flights

Duffel Flights MCP Tools for Google ADK (8)

These 8 tools become available when you connect Duffel Flights to Google ADK via MCP:

create_flight_offer_request

Provide passengers as a JSON array string. Search for flight offers by specifying origin, destination, and passengers

create_flight_order

Provide full passenger details as a JSON string. Book a flight by selecting an offer and providing passenger details

list_aircraft

Retrieve a list of aircraft used by airlines

list_airlines

Retrieve a list of airlines

list_airports

Retrieve a list of airports

list_flight_offers

Retrieve all available flight offers for a specific offer request

list_flight_orders

Retrieve a list of all flight bookings (orders)

pay_for_flight_order

Process payment for a flight order that was previously put on hold

Example Prompts for Duffel Flights in Google ADK

Ready-to-use prompts you can give your Google ADK agent to start working with Duffel Flights immediately.

"Search for a flight from London (LHR) to New York (JFK) on 2024-12-01."

"List all airports in Brazil."

Troubleshooting Duffel Flights MCP Server with Google ADK

Common issues when connecting Duffel Flights to Google ADK through the Vinkius, and how to resolve them.

McpToolset not found

Update: pip install --upgrade google-adk

Duffel Flights + Google ADK FAQ

Common questions about integrating Duffel Flights MCP Server with Google ADK.

How does Google ADK connect to MCP servers?

Import the MCP toolset class and pass the server URL. ADK discovers and registers all tools automatically, making them available to your agent's tool-use loop.

Can ADK agents use multiple MCP servers?

Yes. Declare multiple MCP tool providers in your agent configuration. ADK merges all tool schemas and the agent can call tools from any server in a single turn.

Which Gemini models work best with MCP tools?

Gemini 2.0 Flash and Pro models both support function calling required for MCP tools. Flash is recommended for latency-sensitive use cases, Pro for complex reasoning.