Duffel MCP Server

An MCP server that integrates the Duffel flights API to enable flight searching, airport code lookup, and fare detail retrieval via natural language. It allows users to search for one-way or round-trip flights and access baggage and fare conditions directly within Claude Code.

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// key findings

⚠️

Known vulnerabilities in dependencies: 2 high

Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

🔐

You'll be asked for 1 credential: DUFFEL_API_TOKEN

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// known CVEs in dependencies2 high

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@1.0.0GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.0.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

Depend on this server? Get alerted when its CVEs change.Watch this server free →

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

🔐 secretDUFFEL_API_TOKEN— "": "duffel_test_your_token_here"

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/naren8642-duffel-mcp-mqspg8)](https://m8ven.ai/mcp/naren8642-duffel-mcp-mqspg8)

commit: 97f5991ed117a8bbe8a1540012f50f052516a983

code hash: 1322420a40f928d58aefa0e64559048a6d9d2da1d482bea5db35a00c50ee5b0d

verified: 6/15/2026, 2:24:31 PM

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