Finds the actual cheapest —
and shows you the arithmetic.
Ask any chat model for the cheapest detergent and it will answer confidently, invent a product link, and compare a three-pack against a single bottle. Scout opens the pages, reads the real prices, and does the maths in Rust.
The cheapest sticker price is the worst deal of the three. Scout compares landed cost — item plus shipping — and then the price per wash, because a bigger bottle is only cheaper if it is actually cheaper per wash.
Trips in the browser
See the whole route. Make the choice.
Every airport, saved flight and connection sits in one timeline. Compare the options Scout found, choose the flight you want, and see the time at the next airport update immediately — before a tight connection becomes a surprise. Hotels, museums and trains stand in the same column, in date order between the legs, each marked when it is booked. Download the full plan as a print-ready PDF when you want it away from the screen.
A saved price is labelled by its source and age. Before booking, ask Scout to refresh live fares; the plan stays durable while short-lived offers do not.
Departure, arrival and layover airports stay visible across the whole trip.
Airline, flight numbers, duration, stops, source and saved fare travel together.
Choose another flight and tight, impossible or airport-change joins are flagged.
A booking address of your own
sasha@goodscout.fyi
Give it to the hotel at checkout, or forward the confirmation yourself. Every message is forwarded to your real inbox first — nothing is ever only in Scout — and then read into a pending row on the trip whose dates it overlaps. The row waits there until you press Add.
Nothing moves on its own
A confirmation becomes a row you can see and refuse. Mail never edits an itinerary, and a misread one costs you a click rather than a booking.
The email meets no tools
It reaches exactly one model call, built without a single tool, that answers with fields. An instruction hidden in a booking has nothing to act on.
The ticket comes with it
Attachments are kept and PDFs read for their text, so the booking arrives with its confirmation code and the ticket already on it.
How it finds the cheapest
Landed cost, not sticker
€15.17 with €16.98 shipping loses to €35.25 delivered. Offers that don't state shipping still compete, but their prices are labelled item-only.
Price per unit
Per wash, per litre, per 100g. A three-pack and a single bottle are only comparable once they're in the same units, and that division happens in Rust.
Numbers off the page
Prices come from the page's structured data for the exact URL opened — never from page text, where a “related items” strip becomes your quote.
Your shops, not just the ones that rank
“always check 123schoon.nl for cleaning products”
Small shops never rank organically, even under their product's exact name. Tell Scout
once which shops you trust and for what, and it queries them directly with a
site: search on every relevant question — scoped by category, so a
cleaning-products shop isn't consulted about a laptop.
The same goes for the rest of your profile: delivery country, sizes, languages. Scout searches in your languages as well as English in one call, because “laundry detergent” finds nothing on a Dutch shop and “wasmiddel” does.
Where the listings come from
The eBay Browse API, with developer credentials and OAuth. Current prices and stock straight from eBay, no page reading involved. Needs your own key — without one, eBay results still arrive through ordinary search.
The same JSON endpoint marktplaats.nl's own front end calls to fill its results page. Not scraping rendered HTML, but not a public API either: it can change shape without warning, and when it does Scout falls back to normal search rather than reporting nothing. Sold and deleted listings are filtered out.
The Catalog API, if you have an approved affiliate account — and they do reject applications. Optional, like the rest.
Found by search, then opened and read. Pages that block a plain HTTP client get re-opened in headless Chrome, which clears the challenge shops put in front of them. When a page can't be verified, Scout says so rather than guessing.
Every row here was a real bug
| Four Amazon links, all fabricated. An invented product URL looks perfectly real and always 404s. | Every link is probed before sending. Dead ones trigger a correction turn, then get struck from the text. |
| €640 for a €6.48 bottle of cola. The shop published the price twice — once in euros, once in cents — and we picked the wrong one. | A price with decimals beats a bare integer, and anything exactly 100× the page's other price is corrected. |
| Recommended something marked “out of stock”. The page returns HTTP 200, so nothing looked wrong. | Stock comes from the page's markup, not its prose — that page said “unavailable” once and “add to basket” seven times. |
A plan stays a plan
Live offers expire in minutes; an itinerary should not. Scout stores the route and the flight you chose, then searches again when you finalise. It never quietly turns Tuesday's fare into today's promise or substitutes a different flight because yours disappeared.