V2 API

The V2 API is the new API used for interacting with ATLauncher. It’s a GraphQL api which allows you to query multiple things, as well as query for just the information you want.

Please Note

This is a beta at this point in time. The api structure and queries/mutation may change at any point in time. While we try to avoid it, it may happen. Keep an eye out on the docs and schema in the playground at https://api.atlauncher.com/v2/graphql.

Also as this is still beta, and as usage patterns and abuse is detected, we may change the complexity calculations or rate limits as we see fit.

Access Levels

There are 2 different types of access levels available from the API. There is a public access level and pack developer access level.

Public Access Level

This access level is available to all and doesn’t need an API key to access. Information supplied to the Public Access Level is limited and there are lower request allowances.

Pack Developer Access Level

This access level is available to Pack Developers only and requires an API key/access token to access, which can be obtained in your settings page of the admin panel or logged in with the login mutation. Pack Developers will have higher request allowances.

For an example of logging into the api to get an access token, see this example.

Request Allowances

Unlike the v1 api, you don’t have a limit on the number of requests you can make, rather the complexity of your queries within a minute timeframe.

See the section below on Complexity Limits to get an understanding of how the complexity score is calculated.

Access Level	Points Limit Per Minute	Max Query Complexity
Public	10000	1000
Pack Developer	50000	5000

You can query your current rate limits by querying the rateLimit field (example here).

Complexity Limits

When you query for information, you’re limited by the complexity of your query. We calculate this based on the number of nodes that are returned.

All queries have a max complexity limit (depending on your access level) and going over that will return an error and not run your query. As an example:

query {
    packs(first: 10) {
        name

        versions(first: 10) {
            version
            minecraftVersion
        }
    }
}

The above query would result in a query complexity of 110.

Going middle out, we’re getting 10 versions for 10 packs, which is 100 total version, plus the 10 packs makes it a total complexity of 110.

Max Query Depth

As well as complexity limits, there is a limit to the depth that your query can go. If your query exceeds 5 levels of depth, it will not run and return an error.

How To Make An API Call

To make an API call, you simple need to make a POST call to https://api.atlauncher.com/v2/graphql with the appropriate body. We have a playground setup that you can use to see the docs, schema as well as play around and figure out how to write and send queries to the api. Visit https://api.atlauncher.com/v2/graphql.

If you are a pack developer and have an API key, it can be specified by adding a Authorization header with the token as a Bearer token (for instance if your api key is 12345, the header is Authorization: Bearer 12345).

All requests to the api must contain a valid useragent. Your useragent should have the name of your software/bot and ideally some form of contact information (be it a website, Discord username or email) where we can contact you about your use of the api if there is an issue. Failing to do so may cause your requests to be blocked and potentially your IP address blocked.

File Uploads

Some mutations will allow you to upload files along with your request. We do so using the GraphQL multipart request specification. As an example, uploading an image the query would be like below, and we’d send through our file as image in a multipart upload as specified in the spec:

mutation UpdatePack($image: Upload) {
    updatePack(
        packId: 3,
        image: $image
    ) {
        id
        name
    }
}

Client libraries will handle this for you in a majority of cases anyway so you shouldn’t need to worry about the finer details.

Packages

Since the api is just a standard GraphQL server, you can use one of the many different GraphQL clients available for your language of choice. Just make sure the endpoint is set to https://api.atlauncher.com/v2/graphql.