Build micropayment x402 solutions for communities
EthCC[9] · 31 Mar 2026 · 11:10
Julio M Cruz demonstrates creating or adapting community services to accept x402 micropayments. The presentation approaches integration from a developer’s perspective.
Speakers
Topics
From EthCC[9], hosted by Ethereum France.
Transcript
Hello speakello [risas] my name is Julio Cruz founder we doing services for communities but today we going to talk about payments because very important the payment02 payments what we start uh long time ago for agent service and for communities this because a lot of communities have this problem and you guys generate revenue the best way is you have experience you can create a or you can create your service and putting x402 payment is today no jul cruz and let's go for the one there no big problem with the apply no apply to any payment
situation is affiction no is really pay for us no now imagine this because that's what we doing right now is you have people use for payment that's the way to go today and we doing and people doing right now really F402 is we know we here about F402 you have a payment have response told you you need to pay this amount uh everything is on the header facilitator
server facilitators prem for come back standard in a lot projects who perfect okay cool thank you yes why important2 because the idea is now even for for or for humans you need to pay for use no and really is very simple absolutely simple you can see in these lines we can see how you can set your transfer authorization obviously the token you need to use need to be a c 3009 support that one but a lot people
say hey how i can do using another token you can create a grapper you can create a grapper of the token no you can holding and put in the standard and you can use it for payment server payment middle us2 we know we working on solid many years no sense too much now payments you need to develop on your site better you know you sell a product is a lot of facilitator service and you can use it connect to your cyber you can start making money. That's it
simple. You need to have developer team in order to one is a facilit facilitator for example pero have a lot facilitator you can a lot in the market only you can implement it and use it and h using the server this is the way you have a status you have a blocker no payment in the header you block the car the payment coming you need to send the you need to pay for your company. Si el payment is there in the header, you say to the vendor, okay, you know what? Is ready pay ready transfer, take your money. Now he retur the answer to to the customer. No, very simple.
Now what we talking here is about community use cases. When we start per was really because happening in Argentina, a lot friends on Latinoamerica say, "Man, you know what? We need to make money, but we have developers. Okay, pero to build the infra, pero es component. One of that one is the stack. What is the payment services? You can connect or you can connect company process the payment in the case you need to do it. No, us cases is usually is pay for what you need really. articles everything you do everything interaction you can pay one or something like that but you have one million interaction you make the money the same for the agents you have agent everybody
have agents but what happens you put your agents to work what happens you put to your agent and somebody can consume agent and you agent makes money no because you are ready spend the money agent ah this is how you can use from the consumer No, very simple. He retur data. No, si facilité. Okay. The payment pass I know I give you the data. No, you can sell anything like it. A lot options a lot information there.
Actually, we working a lot with base because it's fast, it's cheap. Uh a base even has facilitator but what we doing different to base we give you a report. We can give you everything happen with your network with your transaction because it's very important some community you need to respond for the money you using but the report of you have the blockchain but reports a lot we doing and people doing we have a facilitator middleware identity is RC004 the protocol from Google no you need to use the standard we using multiain but again this Pero ese is facilitator options today I mean is ready there
ready to use ready for you can make money on your system or your application more pero we open source you can find us in that domain this is stack this is the server for payment processing and we have 60 projects in theub open source you can copy you can create facilit you can open your company copy there idea full open source and yes let's go to the code let me see this work because I have internet progress issues later before you can find this demo my personal Julio Cruz
you can see more important sorry you can see the cent code the facilitator vendor. What is the idea is you have a client he do a call a and pay you have facilitator who is the who process the payment mean is you have a vendor who sell the service this vendor he don't need to interact with the blockchain he only say hey he already paid facil say yes I have money I send you no you the the project no let's go is working because I have internet issues but work in the Airbnb okay let's go see here this going to This is the vendor. Let's go start the
vendor. Vendors yup service. C work. Perfect is there. Let's go to the PWD. facilitator is payment and again you can copy and is for the client who going to buy and pay let's go do let's go see this work of course fail but the idea He going to call do a post call to the
to the vendor the vendor going to take this one he going to ask to the he is no payment he going to send the information again to the client say you need to pay this one this amount to this address the client again with information he signed the transaction and the vend okay he sent to the facilit verify that one do your job make the money he say P the process transaction happen he to the vendor and okay transaction happen I ret you data can be any service you do problem with internet but you can copy use it questions for
what happening Nice question. Thank you so much. Different for every country. Every country have own things. What we doing in Latin America is specific country have specific companies who are ready is know that for example you use in Argentina you use in Perú different company in US euro you can use or another one no more control more I mean they allow you to do that one in US we use base no coin base in order to use on R off RAM But depend of country. In country, what we doing in Latin America is we talking with these companies and they provide the own run
of run for the users. Yes. Stack stck. What is your server? Do that one. Stack. Do a lot more of that one. That's because we calling middle. In November was for note the protocol the protocol for example you can do credit the payment is something nobody use but is there the protocol support that one mean what credit is for example I told you
you told me he you I need 000 I told you okay but you need to pay me or something like that I can that moment payments and split to you sign that today everybody sign and take the money in a moment but you can hold envelop you can hold you one take the second one the protocol syem companies Thank you so much. [aplausos]