Build BER↔EZE flight price monitor #2

New Issue

murray · 2026-03-21T23:03:21Z

murray commented

2026-03-21 23:03:21 +00:00

Objective

Build a Python flight price monitor that checks BER→EZE round trip prices daily and alerts when they drop below a threshold.

Specs

Configuration (`config.json`)

{
  "routes": [
    {
      "origin": "BER",
      "destination": "EZE",
      "trip_type": "round_trip",
      "threshold_eur": 700,
      "duration_weeks": [2, 3, 4],
      "preferred_months": [12, 1, 2, 3],
      "monitor_year_round": true
    }
  ],
  "check_interval": "daily"
}

Design for multiple routes from the start.

Price Source

Primary: Kiwi/Tequila API — https://api.tequila.kiwi.com/v2/search
API key may not be set yet. Use env var KIWI_API_KEY.
Implement a thin adapter pattern: adapters/base.py (abstract) + adapters/kiwi.py (concrete)
If KIWI_API_KEY is not set, the adapter should log a clear message and exit gracefully (NOT crash)
Make it easy to add other adapters later (Google Flights scraper, Skyscanner, etc.)

Alerting

When price < threshold: send alert via OpenClaw

openclaw system event --text "✈️ BER→EZE €{price} on {dates} ({airline}) — below €{threshold}! {link}" --mode now

Log ALL checks (hits and misses) to monitor.log with timestamps

Files to Create

monitor.py              # Main entry point (one-shot, cron-friendly)
config.json             # Route configuration
adapters/__init__.py
adapters/base.py        # Abstract base adapter
adapters/kiwi.py        # Kiwi/Tequila implementation
requirements.txt        # Dependencies
README.md               # Setup & usage docs

Constraints

Python 3.10+
Keep dependencies minimal (requests, python-dotenv at most)
No web framework needed — this is a CLI script
Must work as a one-shot command: python monitor.py

Git Setup

git clone https://gitea.netcups.al3dev.link/monkey-island/flight-monitor.git
cd flight-monitor
# ... build ...
git add -A && git commit -m "feat: initial flight monitor" && git push

Use remote URL with token: https://otis:<GITEA_TOKEN>@gitea.netcups.al3dev.link/monkey-island/flight-monitor.git

The Gitea token is available in /root/.openclaw/workspace/.gitea-credentials.

Acceptance Criteria

All files created and committed
python monitor.py runs without error (graceful exit if no API key)
Adapter pattern is clean and extensible
README explains setup, config, and how to add new adapters
Config supports multiple routes

When Done

Run: openclaw system event --text "Done: flight-monitor built and pushed to monkey-island/flight-monitor" --mode now

## Objective Build a Python flight price monitor that checks BER→EZE round trip prices daily and alerts when they drop below a threshold. ## Specs ### Configuration (`config.json`) ```json { "routes": [ { "origin": "BER", "destination": "EZE", "trip_type": "round_trip", "threshold_eur": 700, "duration_weeks": [2, 3, 4], "preferred_months": [12, 1, 2, 3], "monitor_year_round": true } ], "check_interval": "daily" } ``` Design for multiple routes from the start. ### Price Source - **Primary:** Kiwi/Tequila API — `https://api.tequila.kiwi.com/v2/search` - API key may not be set yet. Use env var `KIWI_API_KEY`. - Implement a **thin adapter pattern**: `adapters/base.py` (abstract) + `adapters/kiwi.py` (concrete) - If `KIWI_API_KEY` is not set, the adapter should log a clear message and exit gracefully (NOT crash) - Make it easy to add other adapters later (Google Flights scraper, Skyscanner, etc.) ### Alerting - When price < threshold: send alert via OpenClaw ```bash openclaw system event --text "✈️ BER→EZE €{price} on {dates} ({airline}) — below €{threshold}! {link}" --mode now ``` - Log ALL checks (hits and misses) to `monitor.log` with timestamps ### Files to Create ``` monitor.py # Main entry point (one-shot, cron-friendly) config.json # Route configuration adapters/__init__.py adapters/base.py # Abstract base adapter adapters/kiwi.py # Kiwi/Tequila implementation requirements.txt # Dependencies README.md # Setup & usage docs ``` ### Constraints - Python 3.10+ - Keep dependencies minimal (requests, python-dotenv at most) - No web framework needed — this is a CLI script - Must work as a one-shot command: `python monitor.py` ## Git Setup ```bash git clone https://gitea.netcups.al3dev.link/monkey-island/flight-monitor.git cd flight-monitor # ... build ... git add -A && git commit -m "feat: initial flight monitor" && git push ``` Use remote URL with token: `https://otis:<GITEA_TOKEN>@gitea.netcups.al3dev.link/monkey-island/flight-monitor.git` The Gitea token is available in `/root/.openclaw/workspace/.gitea-credentials`. ## Acceptance Criteria - [ ] All files created and committed - [ ] `python monitor.py` runs without error (graceful exit if no API key) - [ ] Adapter pattern is clean and extensible - [ ] README explains setup, config, and how to add new adapters - [ ] Config supports multiple routes ## When Done Run: `openclaw system event --text "Done: flight-monitor built and pushed to monkey-island/flight-monitor" --mode now`

murray added the

P1-high

feature

otis

labels 2026-03-21 23:03:21 +00:00

murray closed this issue

2026-03-21 23:07:32 +00:00

murray reopened this issue

2026-03-21 23:07:43 +00:00

otis referenced this issue from a commit

2026-03-21 23:10:28 +00:00

feat: initial flight monitor