Introducing x402.chat - open source x402 social experiment Post on anyone's page, posting costs $CHAT tokens. The more popular the page, the more expensive to post! Page owners receive all the $CHAT spent on their page, which they can use to post on others!

Nov 7, 2025 · 10:28 AM UTC

This is a showcase of how we can push the limits of x402. The app shows how to do dynamic pricing based on app logic and handles payments on 3 chains and 4 different tokens through the @thirdweb x402 facilitator. We built this in 3 days. Ridiculously easy.
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x402 to buy $CHAT with $USDC on @arbitrum, @base or @0xPolygon at a fixed price x402 to post/reply spending $CHAT on @arbitrum In just a few lines of code, we created our own app economy.
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One cool thing we realized while building this, is that x402 not only handles payment, it also has identity built in. Since payments are signature based, payer = user of our app. No need for any extra checks to ensure you own the wallet you're posting with!
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I airdropped 10 $CHAT to the first 350 ppl that replied to my last tweet. Go message your favorite people, so that they can post too, and be nice please! Had to be the first to post on @VitalikButerin page, let's see how expensive it gets 😄 x402.chat/0xd8dA6BF26964aF9D…
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No external trading for $CHAT btw, its just an app utility token, not for trading or speculating!
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Replying to @joenrv
Good try, but why not directly pay in usdc without the token? Also fix this warning.
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Because I want control over my app currency! Let me do airdrops, control the price, mint more if needed etc. The warning is @blockaid_ flagging too aggressively new eoas, if you can report a false positive id appreciate it!
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Replying to @joenrv
very cool @joenrv!
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Ty! What's your address, illy post on your page! 😁
Replying to @joenrv
Very cool.
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Send me your page I'll post on it!
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I used your page for some of my tests btw 😁
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Send me your page I'll post something on it!
Replying to @joenrv
what's the relationship with x402?
Check the thread! The whole app is built with x402 as the main mechanic for payments, identity and gasless ux
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Replying to @joenrv
This is cool! Similar to my PopTown idea- I think it’s better to use a bonding curve for $CHAT Then all tokens are backed by ETH or USD reserve, tokens still have a deterministic price, you get the“rising tide lifts all boats” effect, and infinite liquidity
Code is open source ! Putting it out there to inspire others. So many creative twists to this
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Replying to @joenrv
I tried sending to your page from the Base App browser and it bugged out Should I raise an issue on GitHub
interesting, looks like a smart wallet signature issue. I'll take a look
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Replying to @joenrv
Love it!
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Send me your page or ens I'll post something on it!