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afgoes

cheapdates-mcp

by afgoes
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Python
Hybrid

cheapdates

直接从 Google Flights 获取某条航线最便宜的出行日期。CLI + MCP 服务器。

为什么会有这个项目：Google 的价格日历（GetCalendarGraph）由 BotGuard 逐请求签名，因此自 2026 年年中以来，所有纯 HTTP 客户端（fli dates、google-flights-mcp 等）都返回空结果。cheapdates 有两个后端：

  • graph — 驱动无头 Chromium 进入航线页面，打开 价格图，并读取页面自身接收到的日历。一次调用 ≈ 60 个出发日期，支持单程或往返。每 60 天约 3 秒。

  • sweep — 每个日期执行一次 fast-flights 搜索，无需浏览器。每日期约 0.5 秒（4 个 worker）；还会告诉你航空公司。

auto（默认）在安装了 Playwright + Chromium 时使用 graph，否则使用 sweep；如果 graph 失败，则回退到 sweep。

安装

git clone https://github.com/afgoes/cheapdates.git && cd cheapdates && uv sync   # see INSTALL.md
python -m playwright install chromium       # for the graph backend

Related MCP server: fli

CLI

cheapdates JFK LHR 2026-10-01 2026-11-30            # one-way
cheapdates JFK LHR 2026-10-01 2026-11-30 -r 7       # round trip, 7 nights
cheapdates JFK LHR 2026-10-01 2026-11-30 --nonstop --json
cheapdates JFK LHR 2026-10-01 2026-11-30 -b sweep   # force fast-flights

MCP (Claude Code)

claude mcp add cheapdates -- uv run --directory /path/to/cheapdates cheapdates-mcp

工具：cheapest_dates_tool(origin, destination, start, end, trip_length?, currency?, nonstop?, seat?, backend?)。

Python

import datetime as dt
from cheapdates import cheapest_dates
r = cheapest_dates("JFK", "LHR", dt.date(2026,10,1), dt.date(2026,11,30), trip_length=7)
print(r.cheapest)

注意事项

逆向工程实现；Google 随时可能更改页面或响应。解析器通过 fixture 测试（pytest），graph 后端在失败时会回退到 sweep。

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license - permissive license
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