Flight Price Tracker MCP

Track flight prices over time and learn when to buy — powered by real Skyscanner data via RapidAPI.

A Model Context Protocol server that lets Claude track flight prices for routes you care about, build a price history automatically, and tell you whether today's price is a good deal or worth waiting on.

Why this exists

Airlines don't give away day-by-day price history for free. But there's a simple trick: save the price every time you check it. After a few weeks you have your own dataset — enough to judge whether today's price is a good deal or worth waiting on.

It's like keeping your own price diary for a product you want. The shop won't tell you if a "sale" is real — but if you've tracked the price for a month, you know.

This MCP server does that journaling automatically and gives Claude the tools to analyze it. Everything is stored locally in SQLite — no data leaves your machine.

Data source

Live prices come from the Sky Scrapper API on RapidAPI — a Skyscanner data wrapper available to individual developers.

| Plan | Requests/month | Cost | |------|---------------|------| | BASIC (free) | 100 | $0 | | PRO | 1,000 | ~$10 |

100 requests/month is plenty for personal use — airport lookups are cached locally so each check_price call costs exactly 1 request (2 only on first use of a new airport).

Tools

| Tool | What it does | |------|--------------| | add_route | Register a route to track (from, to, dates) | | list_routes | Show all tracked routes and their snapshot counts | | check_price | Fetch the current cheapest price and save a snapshot | | price_history | Return the full saved price history for a route | | analyze_route | Compute min/max/avg, percentile, trend and a buy/wait verdict |

How the verdict works

A fully transparent heuristic — no black box:

| Verdict | Condition | |---------|-----------| | BUY — lowest ever | current price ≤ all-time minimum | | BUY — good deal | cheaper than 70% of past readings | | WAIT — expensive | pricier than 70% of past readings | | NEUTRAL | around the average | | not enough data | fewer than 5 snapshots — keep checking |

The more often you check a route, the smarter the recommendation.

Architecture

Claude  ──►  Flight Tracker MCP  ──►  Sky Scrapper API / RapidAPI
                    │                   (live prices, Skyscanner data)
                    ▼
              SQLite (local)
           routes + snapshots
           + airport cache

Quick start

git clone https://github.com/rafalr100/flight-price-tracker-mcp.git
cd flight-price-tracker-mcp
python3 -m venv .venv
.venv/bin/pip install -r requirements.txt

Then add it to your Claude Desktop config — see INSTALL.md for full instructions.

{
  "mcpServers": {
    "flight-price-tracker": {
      "command": "/absolute/path/to/.venv/bin/python",
      "args": ["/absolute/path/to/src/server.py"],
      "env": {
        "SKY_SCRAPPER_API_KEY": "YOUR_RAPIDAPI_KEY"
      }
    }
  }
}

Get your free key at rapidapi.com/apiheya/api/sky-scrapper — subscribe to the BASIC (free) plan.

Without a key the server runs in demo mode, generating realistic prices so you can test the full flow before connecting real data.

Demo mode

With no API key set, the server generates plausible prices — deterministic per route, with a daily wander — so you can walk the whole loop (add_route → check_price a few times → analyze_route) and watch the history build before connecting a real data source.

Example conversation

You: Track Kraków → Barcelona, departing 15 Aug, returning 22 Aug, call it "Holiday". Claude: (add_route) Added route #1 "Holiday": KRK → BCN…

You: Check the price. Claude: (check_price) Current cheapest: 1,240 PLN (Ryanair). Snapshot saved…

(after a few weeks of regular checks)

You: Should I buy the Holiday tickets now? Claude: (analyze_route) At 1,090 PLN this is cheaper than 80% of past readings. BUY — good deal.

Contributing

Contributions are welcome! See CONTRIBUTING.md for guidelines.

License

MIT — see LICENSE.

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