How to use:
The url must be the hostname only, NO SLASHES, like this: lemmy.dbzer0.com, don't use https://, don't append a slash afterwards (lemmy.dbzer0.com/), only the hostname including the subdomain if it has it (in this case, lemmy).
If the instance has blocked the IP address from the server, or it is stuck and its API is not working correctly, it returns "Not a Lemmy instance" (I am too busy to fix this right now).
If the url is not formatted in a way it can process it, it will say Invalid URL. Better processing can come in the future. I won't be updating it now.
- URL: https://federation-checker.vercel.app/
- Source code: https://github.com/lemmygod/federation-checker
In the backend, it just scrapes https://fba.ryona.agency/?domain={url} and uses the api https://{instance}/api/v3/federated_instances
PRs welcome.
Honestly it works better when deployed locally in a development environment. I think Vercel's IP address is just blocked by cloudflare and other blacklists that stop automated stuff? Idk. Can check back in a few days.
The purpose is not to link, but to know whether it's linked. Sometimes you wanna know if your recipient is gonna be getting your messages before you send them. Sometimes you wanna know if the email provider you're signing up to can even get emails from Gmail before singing up to it.
As I said, linking is automatic. You don't need to know if something is linked as it is automatically linked as soon as you want.
And gmail is an exceptionally bad example as they spamblock just about anyone other that a few others that are too big to block. And they do so for pure business reasons as they want you to switch to gmail.
And I said, the purpose is not to link. Linking is not the purpose. It has nothing to do with the purpose.
The purpose is to interact. This tool checks if you can interact. Sometimes you can, sometimes you can't, simple as that. If you want to interact but the instance you're considering can't, then you put it in your back pocket and keep looking.
Yeah bad example. It's more like you have a sniper's rifle and you wanna see if you can pop a head or whether that head is vaccinated against the exact brand of bullet that you're carrying. Except instead of bullet it's a comment, and instead of head it's a post that you wanna comment on.