---
title: "readAttributeCatalogList(completionHandler:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterapplicationlauncher/readattributecataloglist(completionhandler:)"
---

# readAttributeCatalogList(completionHandler:)

## Declaration

```swift
func readAttributeCatalogList(completionHandler: @escaping @Sendable ([Any]?, (any Error)?) -> Void)
```

```swift
func readAttributeCatalogList() async throws -> [Any]
```