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We've revised the draft composer actions spec after implementing the first prototypes.

The main change is using postMessage for form-to-client communication, but we've also added a more detailed tech spec.

I'm very excited about these, but embedded forms open a new security/safety surface that clients need to approach carefully. 

I've heard from a lot of builders eager to create composer actions and appreciate your patience while we work out the right approach. If we get it right, it's a foundation for a whole class of new programmable social primitives.

https://warpcast.notion.site/Draft-Composer-Actions-7f2b8739ee8447cc8a6b518c234b1eeb

Looking for broad feedback on the latest composer actions spec. Embedded content and two way client-app postMessage communication could be enable a bunch of new programmable primitives, but it's important to get it right.

Looking for broad feedback on the latest composer actions spec. Embedded content and two way client-app postMessage communication could be enable a bunch of new programmable primitives, but it's important to get it right.

https://warpcast.notion.site/Draft-Composer-Actions-7f2b8739ee8447cc8a6b518c234b1eeb

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It's a good point. It may be something we need to trade off at some point. 

Discord proxies requests to their "embedded apps," but I'm not sure how we'd do that in a multi-client world. We may need to simply be clear that once you launch into an interactive embedded app, it can see your IP.

I am a bit concerned about the privacy issue since the action server will know your IP and FID, does Warpcast add proxy for that?

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I think the latest composer actions spec sounds super exciting! 😃 Enabling embedded content and two-way client-app postMessage communication could open up a whole new world of programmable possibilities. It's crucial to nail down the details, but I'm really looking forward to seeing what kind of innovative features this could bring. Let's do this! 💪🚀