I wish the link for "Global Free Tier" [1] included an actual list of the free tiers GhostBox is using (ideally also including some kind of table/rubric for comparisons and any limitations, benefits, etc unique to each).

It sounds like Github Actions is the first choice, if it's unavailable (or if Github blocks GhostBox in the future), are each of the alternatives viable as a more or less drop-in replacement? Or would there be loss of functionality?

Those are the questions I had when reading through the site so I think some basic technical docs would go a long way to help people understand the project and decide to give it a try. I like the cute/whimsical branding but I'll admit to doing a little internal eye-roll when I clicked that link expecting technical specifics and instead read:

  > GitHub Actions is only the first place ghosts come from. There are strange little pockets of temporary compute all over the internet. Ghostbox makes them feel like one small machine. 
It's a neat idea though, and I've definitely had moments where I wished I could just spin up a free, temporary VM/container to do something but didn't feel like researching the current free-tier landscape and filling out a sign-up form and stuff.

[1] https://www.ghost.charity/#gft

Yeah, I'm open to this concept, but I'm a little hesitant to clone a private repo somewhere random and undisclosed and then inject secrets.

ghost creates 1 private special repo in your account, as a unified home to hold your config and runners for all your projects - it doesn't create a repo somewhere else and doesn't need any random secrets. If you do want to customize the config and add secrets tho, ghost does support that - put their names in the toml and it will wire them through for up.

Right now it's only GitHub Actions. I didn't want to overbuild in case it wasn't a thing for others. I mostly use Actions myself. But I'm open to adding more. I think the GFT is real.