flight-pricer Skill

A command-line interface (CLI) to search for flight prices using the Duffel API.

This skill has been structured as a professional-grade CLI tool, inspired by the quality standard of the gog skill.

Prerequisites

• Python 3.7+ and pip.
• A Duffel API key.

Installation

The skill is designed to be installed as a proper command-line tool within its own virtual environment. This isolates its dependencies and makes it available system-wide for the agent.

From the workspace root:

# 1. Activate the virtual environment
source flight-pricer/.venv/bin/activate

# 2. Perform an editable install
pip install -e flight-pricer/

# 3. Deactivate (optional, the command is now linked)
deactivate

This only needs to be done once.

Setup

Before you can search for flights, you must configure the skill with your Duffel API key.

config set

Securely saves your API key to ~/.config/flight-pricer/config.yaml.

Usage:

flight-pricer config set --api-key <YOUR_DUFFEL_API_KEY>

Commands

search

Searches for flight offers based on the specified criteria. The command will automatically use the API key from your configuration.

Usage:

flight-pricer search [OPTIONS]

Required Options:

• --from <IATA>: Departure airport IATA code (e.g., DTW).
• --to <IATA>: Arrival airport IATA code (e.g., MIA).
• --depart <YYYY-MM-DD>: Departure date.

Optional Options:

• --return <YYYY-MM-DD>: Return date for a round-trip flight.
• --passengers <number>: Number of passengers (default: 1).
• --max-stops <number>: Maximum number of connections.
• --non-stop: A convenient alias for --max-stops 0.
• --cabin <class>: Cabin class. Choices: economy, business, first, premium_economy.

Example:

Search for a non-stop, first-class flight for one person from Detroit to Miami, departing April 6, 2026 and returning April 10, 2026.

flight-pricer search --from DTW --to MIA --depart 2026-04-06 --return 2026-04-10 --non-stop --cabin first