I’d like to incorporate subscriptions billed at regular intervals into my app, but at the moment, I’m unaware of any payment solutions on the internet computer that offers these features.

I haven’t used it, but I believe there is a “cronjob” feature available to canisters, which essentially allows update calls to be automatically initiated on a regular interval. I believe that feature would be the foundation of recurring payments. Hopefully someone else can shed more light.

Yeah, it lets you define a canister_heartbeat method that the IC will call periodically. Although I believe it’s only available in Rust right now, and is not the most stable. It’d be great to get Motoko support at some point (there’s a pending issue).

Any update on canister_heartbeat method in motoko. And is it stable in Rust for now?

You should be able to use the heartbeat in Rust or Motoko. I have live code with the heartbeat in Rust and it’s working great.

How’s your cycle consumption? That’s my only concern with heartbeat, since it fires really really often (and it’s up to the code to decide when to actually perform some logic).

Actually I want to query call to another canister for its state, and update current canister state with the response. This should happen periodically like polling. I am thinking heartbeat is solution for it. But now I am getting below error for motoko. error [M0129], unexpected system method nam…

It would help if you provided a source code snippet.

It is definitely more expensive, right now it gets called every second or so.

For this error error [M0129], unexpected system method named heartbeat, expected preupgrade or postupgrade I have used snippet from example in Heartbeats :: Internet Computer Are you asking the snippet for the error or the periodic polling?

I meant a snippet of your actual code that is breaking. Also what version of dfx are you using?

Is there any way to set up recurring payments with the internet computer?

Developers

skilesare March 10, 2022, 12:35pm 14

This one has evolved a bit…not sure how far they got IC Cron - let's schedule some tasks bois - #18 by rckprtr

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Heartbeat getting called before init is finished Developers	24	1737	April 26, 2022
IC Cron - let's schedule some tasks bois Developers	26	3226	February 12, 2022
Cycle burn rate heartbeat Developers	45	4203	November 8, 2022
Ic-cron library tutorials Developers	22	2228	November 15, 2022
Why does a canister keep consuming cycles? Developers community-consideration	19	2039	March 11, 2022

Is there any way to set up recurring payments with the internet computer?

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