How to Use the Duffel Flights MCP in Mastra AI

Q: How do I filter aircraft types?

Use the listaircraft tool inside your Mastra agent's step definitions to filter out specific planes like regional jets if your user prefers widebody aircraft.

Build resilient, self-healing flight booking agents with Duffel Flights and Mastra AI workflows.

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Connect Duffel Flights MCP to Mastra AI

Create your Vinkius account to connect Duffel Flights to Mastra AI 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 Flights with Mastra AI

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Automated booking recovery with Mastra AI

Flight prices change fast, and API calls sometimes fail. This MCP Server lets your Mastra agent call `create_flight_offer_request` and handle rate limits or expired offers using built-in retry logic. If `create_flight_order` fails because a seat was taken, the Mastra workflow engine catches the error, calls `list_flight_offers` to find an alternative, and asks the user to confirm the new price.

Human-in-the-loop payment controls

You don't want an LLM buying flight tickets on its own. Use Mastra's approval step to freeze the MCP workflow right after your agent calls `create_flight_order` to place a temporary hold. Once a human operator clicks approve in your dashboard, the workflow resumes and triggers `pay_for_flight_order` to finalize the booking. This keeps your finance team happy and prevents accidental purchases.

Metadata caching for agent decisions

Agents need context to make smart flight recommendations. Mastra can query the MCP Server's `list_airlines` and `list_airports` once, caching the results to avoid hitting Duffel's API limits on every user prompt. When a user asks for a flight on a specific plane type, the agent checks `list_aircraft` against the cache to filter options before ever calling the live booking tools.

Setup guide

Set up Duffel Flights MCP in Mastra AI

Prerequisites

Node.js 18+ and a TypeScript project
@mastra/mcp + @mastra/core packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run npm install @mastra/mcp @mastra/core plus your preferred model provider (e.g. @ai-sdk/openai).
2

Configure the MCPClient
Create an MCPClient with your Vinkius endpoint as a URL object. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and inject tools
Call mcpClient.listTools() and spread the result into your agent's tools object. All Duffel Flights tools become native Mastra tools.
4

Run with any model
Swap openai("gpt-4o") for any AI SDK-compatible provider. Call agent.generate() and the agent routes tool calls through MCP automatically.

agent.ts

import { MCPClient } from "@mastra/mcp";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const mcpClient = new MCPClient({
  id: "duffel-flights-mcp-client",
  servers: {
    "duffel-flights-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

const agent = new Agent({
  name: "Duffel Flights Agent",
  model: openai("gpt-4o"),
  instructions: "You have access to Duffel Flights tools.",
  tools: {
    ...(await mcpClient.listTools()),
  },
});

const result = await agent.generate(
  "List recent Duffel Flights transactions"
);
console.log(result.text);

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Common questions about Duffel Flights MCP in Mastra AI

Initialize the MCP Server connection with your Vinkius URL, list the tools, and spread them into your Mastra agent configuration. It handles the transport setup automatically.

Yes. You can design a Mastra workflow that checks the timestamp on an offer and automatically reruns `create_flight_offer_request` if the booking window closed.

Yes. You can branch your workflow based on tool outputs, like checking `list_flight_orders` to see if a user has a duplicate booking before calling `create_flight_order`.

Use the `list_aircraft` tool inside your Mastra agent's step definitions to filter out specific planes like regional jets if your user prefers widebody aircraft.

They are never stored on Vinkius. Your API keys are encrypted at rest, and passenger details processed by `create_flight_order` pass through an ephemeral, zero-trust sandbox that wipes itself immediately after execution.

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