LetsFG — Flights & Hotels

Name: LetsFG — Flights & Hotels
Author: LetsFG

作者：LetsFG版本 2026.5.77i★ –i电脑或云端

注册名称io.github.LetsFG/letsfg

安装

概览

作者提供的说明（英文原文）

Search and book flights and hotels: hundreds of airlines, plus bookable hotel rates.

PopNx MCP 的三大支柱

这三项永远不会合并成一个分数：意见、测量和人气是不同的东西。

用户评价i暂无评价评价功能将在后续阶段与账户功能一起开放
我们的基础检查i1 项中通过 1 项依据公开信息检查；尚未扫描代码
使用情况i尚未统计★ –

它能帮你做什么

我们还没有为它写通俗的介绍。下面是我们从注册中心读取到的事实。

连接方式: 电脑或云端
传输方式: stdio, Streamable HTTP
分类: 搜索与 AI 记忆
你需要填写：LETSFG_BEARER_TOKEN, LETSFG_API_KEY

安装

选择你使用的 AI 应用，然后复制设置。

安装之前

基础检查：1 项中通过 1 项
在作者的服务器上运行：你向它提出的内容会经过他们的服务器。
需要你自己填写： LETSFG_BEARER_TOKEN, LETSFG_API_KEY

标为机密的值是你账户的钥匙。千万不要分享给别人，也不要粘贴到聊天里。

你需要

在云端运行无需安装任何东西，通过互联网连接
npm已安装 Node.js（用于 npx 命令）

你用的是哪个应用？

ClaudeClaude CodeCursorVS CodeChatGPT

在上方选择你的应用。我们会记住它，下次按钮会显示“安装到 …”。

适用于网页版、桌面版和手机版 Claude：

打开 Settings → Connectors
点击 Add custom connector
粘贴下面的地址，然后点击 Add
如果要求登录，请登录作者的服务

https://letsfg.co/developers/api/mcp

或者在你的电脑上运行

打开 Claude Desktop → Settings → Developer → Edit Config，把下面的内容粘贴到 claude_desktop_config.json

{
  "mcpServers": {
    "letsfg": {
      "command": "npx",
      "args": [
        "-y",
        "letsfg-mcp"
      ],
      "env": {
        "LETSFG_BEARER_TOKEN": "your-value",
        "LETSFG_API_KEY": "your-value"
      }
    }
  }
}

在终端中运行这条命令

claude mcp add --transport http letsfg https://letsfg.co/developers/api/mcp

或者在你的电脑上运行

claude mcp add letsfg --env LETSFG_BEARER_TOKEN=your-value --env LETSFG_API_KEY=your-value -- npx -y letsfg-mcp

运行前请先填写空着的值。

在 Cursor 中打开

或者自己复制设置

粘贴到项目中的 .cursor/mcp.json，或 ~/.cursor/mcp.json

{
  "mcpServers": {
    "letsfg": {
      "url": "https://letsfg.co/developers/api/mcp"
    }
  }
}

或者在你的电脑上运行

在 Cursor 中打开

或者自己复制设置

粘贴到项目中的 .cursor/mcp.json，或 ~/.cursor/mcp.json

{
  "mcpServers": {
    "letsfg": {
      "command": "npx",
      "args": [
        "-y",
        "letsfg-mcp"
      ],
      "env": {
        "LETSFG_BEARER_TOKEN": "your-value",
        "LETSFG_API_KEY": "your-value"
      }
    }
  }
}

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

在 VS Code 中打开

或者自己复制设置

粘贴到项目中的 .vscode/mcp.json

{
  "servers": {
    "letsfg": {
      "type": "http",
      "url": "https://letsfg.co/developers/api/mcp"
    }
  }
}

或者在你的电脑上运行

在 VS Code 中打开

或者自己复制设置

粘贴到项目中的 .vscode/mcp.json

{
  "servers": {
    "letsfg": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "letsfg-mcp"
      ],
      "env": {
        "LETSFG_BEARER_TOKEN": "your-value",
        "LETSFG_API_KEY": "your-value"
      }
    }
  }
}

浏览器会先询问是否打开应用，然后应用会显示设置并请你确认。密钥的值会留空，由你自己填写。

ChatGPT 只能连接互联网上的服务器：

打开网页版 ChatGPT → Settings → Connectors (Apps)
点击 Create 或 Add（部分套餐需要先在 Advanced 中开启 Developer mode）
粘贴下面的地址，起个名字，然后保存
如果要求登录，请登录作者的服务

https://letsfg.co/developers/api/mcp

菜单名称可能因套餐和版本不同而略有差异。

你的选择通过 Cookie 保存在这台设备上，无需账户。

需要你填写的值

LETSFG_BEARER_TOKEN 机密 env
Card-backed token from the connect flow: add https://letsfg.co/developers/api/mcp as a remote MCP and approve it; the consent step saves a card at letsfg.co/connect in a 0.00 Revolut setup (nothing c…
LETSFG_API_KEY 机密 env
Developer API key (prepaid credits) from letsfg.co/developers. Also reaches both flights and hotels; required for the account and payment tools.

这些设置是根据作者在注册中心的条目生成的。如果 README 的写法不同，请以 README 为准。

它能做什么

我们还没有读取这个服务器的工具列表；我们会轮流检查各个端点。

基础检查i

我们检查的是任何人都能看到的信息；我们没有阅读代码。不适用的检查项不计入总数。 · 检查于 2026年11月6日

✓ 通过
作者与仓库一致
注册名称已通过 GitHub 账户 LetsFG 验证，该账户拥有此仓库
… 尚未检查
仍在维护
我们还没有从 GitHub 读取这个仓库
… 尚未检查
有许可证
我们还没有从 GitHub 读取这个仓库
… 尚未检查
端点有响应
尚未检查；我们会轮流检查各个端点
… 尚未检查
使用 OAuth 登录
尚未检查；我们会轮流检查各个端点
… 尚未检查
工具描述中没有隐藏指令
尚未检查；我们会在检查端点时读取工具列表

与“搜索与 AI 记忆”中的其他服务器比较i

星标数多于此分类中其他 7220 个服务器的 0%
发布到注册中心的时间比此分类中其他 7220 个服务器的 42% 更新
基础检查结果等于或优于此分类中其他 7220 个服务器的 100%

与注册中心里这个分类中所有活跃的服务器比较。只有当发布者拥有该仓库时，星标数才计入。

常见问题

LetsFG — Flights & Hotels 安全吗？

它在 1 项适用的基础检查中通过了 1 项。我们没有阅读代码。在添加密钥或令牌之前，请先看看这个服务器要求哪些权限，并使用只具备所需权限的密钥。

它需要哪些密钥或代码？

你需要填写：LETSFG_BEARER_TOKEN, LETSFG_API_KEY

它在我的电脑上运行还是在云端？

两种方式都可以：安装在你的电脑上，或者连接云端版本。

它还在维护吗？

GitHub 仓库最后更新于–，最新版本（2026.5.77）于2个月前进入注册中心。

哪些应用可以使用它？

支持 MCP 的应用，例如 Claude Desktop、Claude Code、Cursor 和 VS Code。它通过 URL 连接，所以接受远程 MCP 服务器的应用也可以使用，例如开启开发者模式的 ChatGPT。

有什么可以替代它？

同一分类中有：Context7, Codebase Memory, Exa

替代选择

同一分类中其他作者的服务器，按星标数排序。

如何看卡片：★ GitHub 星标i三大支柱：评价 · 检查 · 使用情况i更新 = 最新版本发布到注册中心的时间i

Context7

作者：upstash

Up-to-date docs for AI agents

电脑或云端★ 64,224MIT3天前更新

安装

Codebase Memory

作者：DeusData

Codebase knowledge graph for AI agents — 162 languages, sub-ms queries, 99% fewer tokens.

在你的电脑上运行★ 48,148MIT20天前更新

安装

Exa

作者：exa-labs

Connect AI agents to Exa for web search, content fetching, and multi-step research.

在云端运行★ 5,213MIT44天前更新

安装

作者的 README

打开 README

按原文从作者的仓库复制。PopNx MCP 没有审查或背书其内容。HTML、图片和脚本已被移除。链接会离开本站。

We're LetsFG — a community of travelers.

Finding a flight or hotel shouldn't mean checking 47 tabs. Or 3 hours of searching.

Or having that feeling you could've got a better deal if you'd just waited a little longer.

So we built something about it.

One total price. No tracking. No price that goes up because you looked twice.

Join the community. Help others find cheaper flights. Spread the word.

⭐ Star the repo. Share with a friend ✈️

Flights and hotels. Both live.

Every airline in the world. Real prices. One function call.

LetsFG gives your AI agent flight and hotel search and booking superpowers. Our server-side engine scans the entire world for the cheapest price. Search is free. Booking is real: the fare is held on your card, a LetsFG booking agent buys the ticket, and you get the airline's PNR.

The same flight costs $20–$50 less because you skip OTA inflation, cookie tracking, and surge pricing.

Claude: LetsFG is in Claude's connector directory: add it there, no URL to paste. Other agents: add https://letsfg.co/mcp as an MCP server. Approving the connection opens letsfg.co/connect: one tap, no card. The card is asked for at your first booking, in a 0.00 Revolut setup (nothing is charged, no Revolut account needed). That token searches for free and books. Scripts: send the same token as Authorization: Bearer to the PFS endpoints. Developer API: a separate paid product for high-volume commercial use; most agents do not need it. → Get started

Supporters

Real prices: LetsFG vs Google Flights

We searched 5 routes on Google Flights and LetsFG on the same day (2026-08-05), for flights departing 2026-09-16. Same airline, same number of stops — LetsFG was cheaper every time:

Route	Airline	Google Flights	LetsFG	You Save
LAX → Paris (CDG)	JetBlue, 1 stop	$363	$334	$29
SFO → London (LHR)	JetBlue, 1 stop	$349	$333	$16
LA → New York (JFK)	JetBlue, nonstop	$174	$157	$17
London → Singapore (SIN)	Shenzhen Airlines, 1 stop	$395	$380	$15
Chicago → Dubai (DXB)	Air Canada + Emirates, 2 stops	$517	$461	$56

$133 cheaper across 5 routes in a verified comparison (2026-08-05). LetsFG returns the same prices however often you run the search, because it doesn't track you.

Why the difference? LetsFG compares the same flight across many sellers — Skyscanner, Kayak, Momondo, plus airline websites (Ryanair, United, Southwest, EasyJet, Spirit, Norwegian, AirAsia, and more) — and shows the cheapest. No cookie tracking: the same search returns the same prices however often you run it.

Real hotel prices: LetsFG vs Booking.com

Same hotel, same room type, same 2-night stay, same free-cancellation policy — checked on the same day (2026-08-05) for a 2026-09-16 check-in:

Hotel	Booking.com	LetsFG	You Save
Hotel Boss, Warsaw	$206	$169	$37
ibis Styles Paris Gare de l'Est	$663	$525	$138
Copthorne Tara Hotel, London Kensington	$379	$347	$32

$207 cheaper across 3 hotels in a verified comparison (2026-08-05), matching each property's own free-cancellation rate against Booking.com's free-cancellation rate for the identical dates and room type. Prices quoted in PLN at booking, converted to USD at that day's rate.

Why the difference? LetsFG's price does not rise with demand or with who is searching, and there is no loyalty-program cross-subsidy. At booking the price is held on your card, not taken, and it is charged only once the hotel confirms. The comparison above uses free-cancellation rates on both sides; LetsFG also sells non-refundable rates, and every offer says which it is.

Try it right now — no install needed

Human users: Use letsfg.co and search flights instantly in your browser:

🌐 Search on letsfg.co

Search any route, compare live results, and book the flights you want — no installation needed.

Agents / scripts (free server-side): Get a Bearer token by putting a payment method on file (nothing is charged) → use POST /api/search and POST /api/agent-book. This is PFS — Programmatic Flight Search powered by the letsfg.co engine. Search is free; the token is short-lived and refreshes itself. See letsfg.co/for-agents for the full guide.

When you're ready to integrate it into your own agent, keep reading.

Three ways to use LetsFG

	Path 1 — MCP / CLI / SDK	Path 2 — PFS (Programmatic Flight Search via letsfg.co)	Path 3 — Developer API
Best for	AI agents (Claude, ChatGPT, Cursor, Windsurf), personal use — easiest way in	Scripts/agents calling the API directly with a Bearer token	High-volume commercial integrations that want prepaid billing. Most agents should not use this
Speed	8–10 s to first results	8–10 s to first results	2–5 s (discover) · 8–10 s to first results (full search)
Search cost	Free (connect once: one tap, no card)	Free (connect once: one tap, no card)	Look-to-book: 200 free after every booking, then $0.01
Booking	`book_flight` — fare held on your card, agent buys the ticket, real PNR	`POST /api/agent-book` — same flow	`POST /flights/book` — same flow, no booking fee
Setup	Add `https://letsfg.co/mcp` as an MCP server and approve (one tap, no card)	Same token, sent as `Authorization: Bearer` — see below	letsfg.co/developers
Runs where	Our servers (ranking local in the SDK)	Our servers	Our servers

MCP / CLI / SDK (Path 1): add https://letsfg.co/mcp as an MCP server in Claude, ChatGPT, Cursor or Windsurf and approve the connection. The consent step opens letsfg.co/connect: one tap, no card. The card is asked for at the first booking (any card, or Revolut Pay / Google Pay) in a 0.00 Revolut setup: nothing is charged, no Revolut account is needed, and card details go to Revolut, never to LetsFG. The token you get back searches for free, and once the card is added the same token books. The Python and JS SDKs read that token from LETSFG_BEARER_TOKEN or ~/.letsfg/config.json and apply the open-source ranking algorithm locally. (letsfg auth runs this same connect flow from the terminal: it registers itself as an OAuth client, opens letsfg.co/connect in a browser for a person to approve, and stores the token.)

PFS — Programmatic Flight Search (Path 2): For scripts and agents that call the API directly. letsfg.co is human-only by default (Cloudflare Turnstile + bot protection), so the token from the connect flow is the only programmatic way in. Send it on every request:

Search: POST https://letsfg.co/api/search with Authorization: Bearer → { search_id }
Poll: GET https://letsfg.co/api/results/ (never counts against the rate limit)
Book: POST https://letsfg.co/api/agent-book → { booking_ref } within seconds
Wait: POST https://letsfg.co/api/agent-book/status with { booking_ref } every 20–30 s until completed (PNR), failed (hold released, nothing charged) or needs_attention

POST /api/agent-access/request still answers 402 with add_card_url and these steps as JSON, so an agent that starts from the endpoint lands in the same place. The MPP lane (a wallet, no card) is unchanged: answer the WWW-Authenticate: Payment challenge ($0.01 once) and verify with Authorization: Payment. The Stripe setup_url / SetupIntent lanes were retired on 2026-09-02 and every token they issued was revoked; reconnect at letsfg.co/connect. Full guide and response schema: [letsfg.co/for-agents](https://letsfg

只显示了开头部分；其余内容请在仓库中阅读

LetsFG — Flights & Hotels

概览

PopNx MCP 的三大支柱

它能帮你做什么

安装

安装之前

或者在你的电脑上运行

或者在你的电脑上运行

或者在你的电脑上运行

或者在你的电脑上运行

需要你填写的值

它能做什么

基础检查i

作者与仓库一致

仍在维护

有许可证

端点有响应

使用 OAuth 登录

工具描述中没有隐藏指令

与“搜索与 AI 记忆”中的其他服务器比较i

常见问题

替代选择

Context7

Codebase Memory

Exa

作者的 README

We're LetsFG — a community of travelers.

Join the community. Help others find cheaper flights. Spread the word.

Flights and hotels. Both live.

Supporters

Real prices: LetsFG vs Google Flights

Real hotel prices: LetsFG vs Booking.com

Try it right now — no install needed

🌐 Search on letsfg.co

Three ways to use LetsFG