LetsFG — Flights & Hotels

Name: LetsFG — Flights & Hotels
Author: LetsFG

by LetsFGversion 2026.5.77i★ –iComputer or cloud

Registry nameio.github.LetsFG/letsfg

Install

Overview

Description from the maker (original English)

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

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Computer or cloud
Transport: stdio, Streamable HTTP
Category: Search & AI memory
You need to fill in: LETSFG_BEARER_TOKEN, LETSFG_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: LETSFG_BEARER_TOKEN, LETSFG_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet
npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

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

Or run it on your computer

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

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

Run this in your terminal

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

Or run it on your computer

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

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

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

Or run it on your computer

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

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

Or run it on your computer

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

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

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

LETSFG_BEARER_TOKEN secret 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 secret env
Developer API key (prepaid credits) from letsfg.co/developers. Also reaches both flights and hotels; required for the account and payment tools.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account LetsFG, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Search & AI memoryi

More stars than 0% of the other 7220 servers in this category
Published to the registry more recently than 42% of the other 7220 servers in this category
Basic checks equal to or better than 100% of the other 7220 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is LetsFG — Flights & Hotels safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: LETSFG_BEARER_TOKEN, LETSFG_API_KEY

Does it run on my computer or in the cloud?

Either way works: install it on your computer or connect to the cloud version.

Is it still maintained?

The GitHub repo last changed –, and the latest version (2026.5.77) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Context7, Codebase Memory, Exa

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Context7

by upstash

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Codebase Memory

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

Runs on your computer★ 48,148MITUpdated 20 days ago

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Exa

by exa-labs

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

Runs in the cloud★ 5,213MITUpdated 44 days ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

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

Only the beginning is shown; read the rest in the repo

LetsFG — Flights & Hotels

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Or run it on your computer

Or run it on your computer

Or run it on your computer

Or run it on your computer

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Search & AI memoryi

Common questions

Alternatives

Context7

Codebase Memory

Exa

README from the maker

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