Bitcoin Forum

In some spare time, with the help of ChatGPT and some of my skills, I created a website called Cheap Crypto Deal. It compares crypto swaps that I regularly use to exchange my coins.
Since I was always looking for the best deals, I simply combined APIs to display all results from different swaps in one table.
The form is simple, you just have to enter a value, source and destination crypto, then press a button, once the check is done, a table with sorted values is displayed.
Here is the URL: https://cryptodeal.cheap/
you can find it also as a hidden service (it works without JS): http://lp7lxv6tkk4zepitwmf2uo3pzypvmwgglrzhdofekjswjpday7qemgqd.onion/

If you would like to know more about this silly project you can read about it on my blog: https://0ut3r.space/2025/03/23/cheap-crypto-deal/

Not everything works as it should yet, I mean if you set standard, real values it will show you good results, but if you set something ridiculous like 9999 BTC to XMR don't expect to see real numbers :) I tried to limit things based on each API response with max and min limits, but yeah, probably still something weird can show up.

I will be adding a few more exchanges to the list soon. But if anyone sees any major errors or has any suggestions, let me know, I'll be happy to add something or fix it in my spare time.

For a test, I recommend entering a value of 0.07 BTC to LTC to see how everything works and then your values for testing.

Enjoy.

Cool project, great work for a Chat GPT job! I am wondering how you are classifying these?

Anonymous - Fully anonymous, no KYC.
Low - Rarely initiates KYC.
Medium - User occasionally goes through KYC.
High - KYC checks quite often.

I'd be careful with these classifications as, for example, fixedfloat is showing as fully anonymous, no KYC. They used to be known for this, however they were removed from kycnot.me after this scandal (https://www.reddit.com/r/Monero/comments/11rinux/fixedfloat_is_holding_my_funds/) and a variety of other scandals were also discussed in this reddit thread (https://www.reddit.com/r/nokyc/comments/t291g5/quite_a_controversy_surrounding_kyc_at_fixedfloat/).

At a minimum, you may want to put a disclaimer just to ensure that you aren't liable for any of the labeling. Otherwise, nice work on this app, bookmarked!

Thanks for the feedback. I generally took the KYC information from https://swapspace.co/reviews but not only, because when creating my list on github https://github.com/h0ek/crypto-swap I analysed each provider and read their privacy policy and whether they have kyc/aml.
And of course partially on my experience. I could always make a mistake, but also suppliers can make changes to their policies and I verify this rarely either as someone brings it to my attention or once in a while I verify it myself by looking to see if anything has changed. I know the FixedFloat case, I followed it because fixedfloat used to be my favorite exchanger. Some time fixedfloat was in maintenance mode after these incidents, then they rebooted and it's been good ever since. I have exchanged small and large amounts with them and everything works as it should. Of course, we (as a community) can't forget what happened a few years ago, but I also can't cross someone off for the mistakes of the past. I try to approach it from a distance. It was all on Reddit and forums and FixedFloat stuff always provided some explanations, they didn't disappear. I don't want to sound like a man in a tin foil hat, and I've also seen myself that the site was offline and then in maintenance mode for a long time, but I also don't know if anyone seriously lost crypto or if they were all eventually returned. A lot of unknowns. If you run a crypto site where there is no KYC/AML then if it becomes too popular or someone uses it to launder stolen crypto then sooner or later there will be agents with questions at your door, maybe that's what happened.

I will definitely add a disclaimer in the next update, good point, thank you.

A few notes:

- It would've been better if floating rates weren't static ^{[I'm not sure about the limitations of the APIs that you're currently using, but perhaps you can achieve thirty-second intervals for fetching data]}.
- I don't know much about coding stuff, but I think with a better server, the generation times can improve to an extent.
- A switch button would be nice.
- Despite clicking the "show me the results" button once, I got the following error on one occasion: Screenshot (https://www.talkimg.com/images/2025/03/31/lJHMw.jpeg)

Lastly, I'd like to thank you for coming up with yet another great website/tool.

Thanks for the feedback.

- Dynamic floating rates can be done, but it requires Javascript, and the site was built to work fine on Tor. JS is disabled in the Tor browser, and Tor users don't like JS :) I can think about building it with some interactive parts for users with JS enabled, and if website detect JS is disabled then serve the current version. I have to think about it. For now it is just static.

- The generation time is based on the API response and has nothing to do with the server hardware (it more about network). I now have 10 APIs integrated and they are all checked at the same time, but if one is delayed then they are all waiting for it. I can think of a solution for this.

- Switch button? I think it's about to go to the next stage and swap coins. I didn't implement this because every API solves this in a different way, and if something were broken in the meantime, users would ask me about bugs, not the owner of the API. I do not want to take responsibility for transactions. This is just a simple exchange comparison.

- As there is no JS implemented in the code, I can't lock the button after it is clicked. So if someone will press it twice or more, then the error will be displayed. I have created an error page to limit requests to not ddos my site and not spam APIs requests (they are also limited by providers).

I hope it's clear now. Thank you for suggestions.

I like the colors; they pop.  It's a site I would visit first thing in the morning.

Are you old enough to remember Tom Cruise shouting "Show me the money!"?
https://www.youtube.com/shorts/OVbRMvGJVfw

SHOW ME THE RESULTS could be a bit more catchy in line with your vibrant theme.

Are you going to add USD or include the vendor service fees and any network fees in your calculation?   If you kept your fees up to date you could make a commercial API with it, or at least a private service for your friends.

How much work comes from you compared to ChatGPT? I'm curious because I use lavable.dev for my front-end tasks and I wonder if ChatGPT Plus is better. The website looks funny, and its colours remind me of my childhood, but it's very simple, and I like that. Is there any way to speed up the website? Takes a few seconds to load and it's very boring.
I liked your Github page of crypto swap and crypto debit cards, wish you good luck, it's a nice project to have for fun for the community.

haha, yes I am old enough to remember. I like the idea of the fancy button.
I never think about USD or any other FIAT currency. Maybe I could create a separate sub-site for that, like preev.com, but I focused on crypto to crypto swap. So for now I will leave it as it is.
About the fees, I can try to take it from the API and add another column with a fee, that is actually pretty good idea. About commercial API for that, I am not sure is I am good enough to do it, but let's see what my fiend ChatGPT would say xD

thanks for the feedback

Thank you, sir, for your kind words.
It took me about 3 hours one day and 3 hours the second day and maybe 1 hour the third day to get this live. So I guess if I had a day for this project I would finish it in 8 hours max.
TBH I wanted to do everything with ChatGPT, but it's not as good as I would like it to be yet, but maybe that's good, for learning purposes. I told ChatGPT what I wanted to achieve, I tested it on a virtual machine with Debian and Nginx and PHP installed. I monitored the error logs and sometimes added debugging options to the code if something didn't work and wasn't in the logs by default.
Some things I fixed manually as I knew what was wrong. Most of my time was spent reading each API documentation from the vendors to understand the logic and queries. Then I provided the API docs to chatGPT, sometimes as a link and sometimes just copy/paste documentation. I did one API at a time. Only in two cases it work out of the box, in other cases I checked for bugs and provided chatGPT with my suggestions and part of the API documentation that I knew would help. So the short answer is 80% ChatGPT 20% my work. But as I said, my work was understanding API documentation (boring and long) and hunting for bugs and testing with feedback to ChatGPT for fixes.

I need to think about how to speed this up. I have some ideas.

So far my road map looks like:
-make it faster in response
-fancy button to match the website style
-add KYC disclaimer
-lock the button once clicked or display loading page after it is clicked before content is loaded
-new column with vendor fees (maybe commercial API for that xD)

First of all, it is a really cool project. I like that it also tells you if your amount is less than the minimum transactional amount on a particular swap or if the targeted conversion is not available. Is there a reason I am not seeing USDT among cryptocurrencies? Very good project and a nice website design. Thanks, I will use this.

I do agree, they are a great platform and it is a shame that they had those hiccups during those periods, though it is tough to say what their status is now (and tough to say they are 100% anonymous with no KYC). Either way, their position shouldn't be your priority until someone lets you know otherwise, disclaimer is the best way to go to cover yourself! Glad I could help :)

thanks, I didn't add yet too many other crypto as I had to start with something. There are mostly these I am using everyday. I will add some in the future.

Would be cool to have a basic price chart showing the best rate over the past 24hrs/week so users can decide if it's a good time to swap.

I will consider this proposal, thank you.

This project is about finding the best price combination at a specific time, right?  Why would they care about the history of the rate of each pair when they are looking for the best rate now?    That would be for another tool IMO.

Good point. I couldn't have put it better. Thank you.

It's a nice start for fun but do you intend to improve this project? I've tried it out of your respect but it's not really something that I'll check tomorrow. If you improve it, I think it will be very cool thing. Anyways, I suggest you to use input type = "number" instead of "text", this way, users won't accidentally type an alphabet. You can also use flexbox to make it responsive. At the moment it only opens on desktop computers, it doesn't work in smartphones. Also, result generation time takes more than 5 seconds, which is not really comfortable. The more instant it is, the better. I wish you a good luck.

Yes, I was also looking for the same. Usually, I think most people will prefer to swap crypto for stablecoins and vice versa. Therefore, it would be beneficial to add USDT and USDC as well.

By the way, I like the design and outlook of your site, it's really attractive and eye-catching. Also, I think you intend to make money through referral codes, as I see the exchange links contain your referral links. How many people are actively using your links for crypto swaps?

I fully understand and I don't blame you if you forget about it tomorrow :) This is a hobby project, I will definitely develop it further and add your suggestion to the list.
-input field as number not text
-check flexbox to make it smartphone friendly

Generation time is on the list already.

thanks

thank you, adding USDC and USDT to the list, curently todo looks like:

-make it faster in response
-fancy button to match the website style - i will keep the button as it is sorry :P
-add KYC disclaimer
-lock the button once clicked or display loading page after it is clicked before content is loaded
-new column with vendor fees (maybe commercial API for that xD)
-input field as number not text
-check flexbox to make it smartphone friendly
-USDC and USDT and other popular stable coins

Yes reflinks are there, I didn't generate new ones as dedicated for this site, so I use the same ones I added in various places and my other projects (not all providers allow to generate dedicated reflink).

I do not track which source gives me the best income. I am just happy that income is generated :)

I can just give you some general stats I follow like some of the services allows me to get bonus around 1k USD per month where others gives me 10 USD in the same time. It is also more about how lucky I am and that someone is exchanging large amount of crypto at once using my reflink. For me it is a lottery :) not a stable income. Just a bonus to my standard salary. Thanks to these reflinks I can have fun and pay for all the VPS servers, domains and create new weird projects. I think of it like reflinks allow me to pursue my various hobby's.

I have not forgotten this little project 8)
Today I had time for some changes

Version 0.2 - 04.05.2023

• Added About, Changelog, PGP, ToS, PP menu in footer and relevant pages
• Added support for scaling for mobile devices
• Integrated Terms Of Service and Privacy Policy
• Added KYC/AML details note
• Amount input filed converted from text to numbers
• Added loading page
• Added new ERC-20 tokens: DAI, USDT and USDC (They may not be fully functional yet. Work in progress.)

I need to do some more testing and tweaking of the ERC-20 tokens I've added, but this is the first step.
I think I have fulfilled all the requests from the forum :)

Except for my super fancy dancy button.   >:(

Is there a reason you don't show the service fees per exchange?   Since you know the exact amount to trade you can calculate it and display it in the table.  Also, the new fee column and Rate column should be sortable. 


You should calculate that in the backend, and make everything consistent. 

Almost :P You mentioned in the past that the switch/swap coins button would be in the next update.

It appears that hoeczek is already doing it for some of them since it shows "must be > a certain amount"... @hoeczek: Did you tweak it to improve generation times when an API's response is delayed?
^{- @hoeczek: I don't think it's a good idea to include exchanges that don't support a specific pair in the results (screenshot (https://www.talkimg.com/images/2025/05/05/UUdyZg.jpeg)).}

Yeah fancy dancy button is not on my list :) Sorry.
Not every API shows the fees in the clear way.
And who cares about fees if you get exact amount which is listed in Rate column. I need to check if I can do it easily, but I am still not sure about the reason I should calculate it and show.
Don't get me wrong, I am just thinking loud.

With the next update I will try to make it consistent (and remove that sentence), it is hard as each API do it in own way, so I need to go one by one, test pairs and see the result and additionally sometimes everything is mess when value not meet min/max.
But yeah I will work on that.

Haha I mentioned it but also in this post https://bitcointalk.org/index.php?topic=5536727.msg65245814#msg65245814 i resigned from it.

and about the second part, I had to add that loading page as when I tested API responses it looks like average API response for each is from 1 to 5 sec (mostly depends on Crypto pairs). So I have 10 services integrated and in the worst case it is 10*5 sec. But average for all is around 26 sec.
As I am not using JS (target audience is also hidden services with onion domain) I cannot block button for the time of getting info from API's so I added loading page, also I switched from getting one by one to getAllRatesParallel() function which is using curl_multi_exec so I can ask each API in same time.
I still need to dive into it, but for now loading page solves my problems, informs users and wait time is not as bad as some time ago.

So for now I have on my list:
-show consistent info if pair is supported, not meet requirements etc.
-work on optimization
-more testing on ERC-20 tokens

I think you should be happy now.
Button is now renamed to SHOW ME THE MONEY
and there is info like: *by pressing this button you agree to the Terms Of Services and Privacy Policy and you watched this. (Where one of the agreement is to watch the video you sent in your post ;)

I checked out the website and i will honestly say the design kind of gave me a bitt of laugh due to the coloring style but thats not an issue the website might not be the neatest in terms of design but thatx also what makes it kind of cool & unique!! I think the idea itself is actualy a useful one though. Like havin all those swap rates in one table saves someone the stress of opening multiple tabs to compare rates. I tried the example you recommended of 0.07 BTC to LTC and it worked smoothly although afetr the few seconds loading but thatx beside the point.. I get what you mean about extreme values showing some weird results but i don't think it is a big deal.. The website looks handy already at least for some normal trades.
I honestly beliv that if you keep adding more exchanges and also maybe do some minor stylish polishing just to make it look less colorful!! as a developer myself i appreciate handy tools becuase the aim of developing them is to make things easy for others.. Good job bro!! especially for something done in spare time as you rightly pointed out..

Thank you.
I will make style more professional in the future :)