Price the same Tokyo hotel stay through four booking sites to the final checkout page with Claude Code agents, and book the cheapest

Posted

May 15, 2026 by Kin Meng Sio (LinkedIn)

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Last checked

Oct 19, 2026

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Method:

How we verify

Evidence: Described by posterThe person describes what happened in words, without screenshots or video.

Outcome

Kin Meng Sio launched 4 Claude Code agents to go through 4 booking flows for the same Tokyo hotel and dates (no breakfast, June 13–15) all the way to the final confirmation page, with coupons applied, taxes added and currency holds calculated. It took five minutes while the agents controlled their browsers; it used to take an hour of tab-switching. Booking direct would have cost $93 more than Agoda and had the worst cancellation policy of the four: sliding 40/50/100% fees within 3 days, while every online travel agency offered free cancellation. They booked Agoda at $192.27. Earlier the same week, the AI had caught a $702 drop fee on a car rental.

Agent

Claude Code

The source didn't share its exact prompt, so we wrote this from what it describes.

Run this task now, exactly as written below. Everything you need is here, so start straight away and only stop if something required is missing or a rule below tells you to.

Goal: Find the cheapest way to book a specific hotel stay, comparing the real final price and cancellation terms.

Fill in before running:
- The hotel, dates and room type: [DETAILS]
- The sites to compare (the hotel's own site plus booking sites): [SITES]
- Whether free cancellation matters to me: [DETAILS]

Rules:
- Go through each site's booking flow up to, but not past, the final payment page.
- Record the final total with taxes, fees and any coupons, in one currency.
- Record each site's cancellation policy and deadline.
- Stop before paying and let me choose.
- If a site asks me to sign in, pause and let me do it myself (including any CAPTCHA or two-step code); never guess or store passwords.
- Ask for my OK before you pay, book, send, submit or cancel anything.
- Check facts that can change (prices, opening hours, dates, availability, rules) against the official source, and tell me anything you couldn't verify.

Output: A table of site, final total, cancellation terms and link, with the best option marked.

You'll know it worked when: I book the same room for the lowest real price with terms I'm happy with.

Run this task now, exactly as written below. Everything you need is here, so start straight away and only stop if something required is missing or a rule below tells you to.

Goal: Find the cheapest way to book a specific hotel stay, comparing the real final price and cancellation terms.

Fill in before running:
- The hotel, dates and room type: [DETAILS]
- The sites to compare (the hotel's own site plus booking sites): [SITES]
- Whether free cancellation matters to me: [DETAILS]

Rules:
- Go through each site's booking flow up to, but not past, the final payment page.
- Record the final total with taxes, fees and any coupons, in one currency.
- Record each site's cancellation policy and deadline.
- Stop before paying and let me choose.
- If a site asks me to sign in, pause and let me do it myself (including any CAPTCHA or two-step code); never guess or store passwords.
- Ask for my OK before you pay, book, send, submit or cancel anything.
- Check facts that can change (prices, opening hours, dates, availability, rules) against the official source, and tell me anything you couldn't verify.

Output: A table of site, final total, cancellation terms and link, with the best option marked.

You'll know it worked when: I book the same room for the lowest real price with terms I'm happy with.

Run this task now, exactly as written below. Everything you need is here, so start straight away and only stop if something required is missing or a rule below tells you to.

Goal: Find the cheapest way to book a specific hotel stay, comparing the real final price and cancellation terms.

Fill in before running:
- The hotel, dates and room type: [DETAILS]
- The sites to compare (the hotel's own site plus booking sites): [SITES]
- Whether free cancellation matters to me: [DETAILS]

Rules:
- Go through each site's booking flow up to, but not past, the final payment page.
- Record the final total with taxes, fees and any coupons, in one currency.
- Record each site's cancellation policy and deadline.
- Stop before paying and let me choose.
- If a site asks me to sign in, pause and let me do it myself (including any CAPTCHA or two-step code); never guess or store passwords.
- Ask for my OK before you pay, book, send, submit or cancel anything.
- Check facts that can change (prices, opening hours, dates, availability, rules) against the official source, and tell me anything you couldn't verify.
- Check for any loyalty or member rate on the hotel's own site before ruling it out.

Output: A table of site, final total, cancellation terms and link, with the best option marked.

You'll know it worked when: I book the same room for the lowest real price with terms I'm happy with.

Before you finish: re-read my goal and constraints, check your answer against each one, and list anything you assumed or couldn't confirm.

Source

https://www.linkedin.com/posts/kinsio_claude-just-booked-my-hotel-stay-i-saved-activity-7461082996692000768-c92y