`ASConnectService`

A type-safe Swift client for the App Store Connect API.

Overview

ASConnectService exposes every endpoint of Apple's App Store Connect API as a Swift method with typed requests and responses. It's generated from the official OpenAPI specification with Swift OpenAPI Generator.

Creating a Client

Create a Client with a server URL, a transport, and a BearerAuthMiddleware that authenticates each request with a JSON Web Token (JWT):

import ASConnectService
import OpenAPIURLSession

let client = Client(
    serverURL: try Servers.Server1.url(),
    transport: URLSessionTransport(),
    middlewares: [
        BearerAuthMiddleware(token: yourJWTToken)
    ]
)

Tokens expire after 20 minutes at most. For longer-lived clients, use APIKeyTokenProvider, which signs new ones with your API key as needed:

let tokenProvider = try APIKeyTokenProvider(
    issuerID: yourIssuerID,
    keyID: yourKeyID,
    privateKey: yourP8FileContents
)

BearerAuthMiddleware {
    try await tokenProvider.token()
}

Making API Calls

Each endpoint is a method on Client, declared by APIProtocol. It returns an Output enum with a case for each documented response:

let response = try await client.appsGetCollection(query: .init(limit: 10))
let apps = try response.ok.body.json.data

The ok property throws for any other response. To handle those, switch over the Output cases, such as .unauthorized or .undocumented(statusCode:_:).

Fetching More Pages

Lists are paged. Pass a page's Components/Schemas/PagedDocumentLinks/nextCursor as the cursor of the next request:

var apps: [Components.Schemas.App] = []
var cursor: String?

repeat {
    let page = try await client.appsGetCollection(query: .init(limit: 200, cursor: cursor)).ok.body.json
    apps += page.data
    cursor = page.links.nextCursor
} while cursor != nil

Handling Rate Limits

Add RateLimitMiddleware before the authentication middleware to retry 429 Too Many Requests responses:

middlewares: [
    RateLimitMiddleware(),
    BearerAuthMiddleware { try await tokenProvider.token() }
]

Topics

API Client

Client
APIProtocol

Authentication

BearerAuthMiddleware
APIKeyTokenProvider

Rate Limiting

RateLimitMiddleware

Generated Types

Components
Operations
Servers

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ASConnectService