API

Go web service that serves as a cache to APIs that each Chatterino client could use.

Routes

Resolve Twitch emote set

twitchemotes/set/:setID
Returns information about a given Twitch emote set. Example response:

{
  "channel_name": "forsen", // twitch user name
  "channel_id": "22484632", // twitch user id
  "type": "sub",            // string describing what type of emote set this is (e.g. "sub")
  "custom": false           // indicates whether this is added/modified by us or straight passthrough from the twitchemotes API
  "tier": 1,                // integer describing what tier the sub emote is part of
}

Resolve URL

link_resolver/:url
Resolves a url into a preview tooltip.
Route content type: application/json
Route HTTP Status Code is almost always 200 as long as we were able to generate information about the URL, even if the API we call returns 404 or 500.
If the given URL is not a valid url, the Route HTTP status code will be 400.

Examples

url parameter: https://example.com/page

{
  "status": 200,                                               // status code returned or inferred from the page
  "thumbnail": "http://api.url/thumbnail/web.com%2Fimage.png", // proxied thumbnail url if there's an image
  "message": "",                                               // used to forward errors in case the website e.g. couldn't load
  "tooltip": "<div>tooltip</div>",                             // HTML tooltip used in Chatterino
  "link": "http://example.com/longer-page"                     // final url, after any redirects
}

url parameter: https://example.com/error

{
  "status": 404,
  "message": "Page not found"
}

API Uptime

health/uptime
Returns API service's uptime. Example response:

928h2m53.795354922s

API Memory usage

health/memory
Returns information about memory usage. Example response:

Alloc=505 MiB, TotalAlloc=17418866 MiB, Sys=3070 MiB, NumGC=111245

API Uptime and memory usage

health/combined
Returns both uptime and information about memory usage. Example response:

Uptime: 928h5m7.937821282s - Memory: Alloc=510 MiB, TotalAlloc=17419213 MiB, Sys=3070 MiB, NumGC=111246

Using your self-hosted version

If you host your own version of this API, you can modify which url Chatterino2 uses to resolve links and to resolve twitch emote sets.
Change link resolver
Change Twitch emote resolver
How to build and host