# Firebase Apple SDK HTTPSCallable final Swift clients subclass wrapper no longer compiles

Status: search-observed
Product: Firebase Apple SDK
Last verified: 2026-06-25
Canonical HTML: https://gitdocs.org/fix/firebase-apple-sdk-httpscallable-final-swift-clients-subclass-wrapper-no-longer-compiles
Machine JSON: https://gitdocs.org/api/fixes/firebase-apple-sdk-httpscallable-final-swift-clients-subclass-wrapper-no-longer-compiles.json

## Exact Symptom

See the observed Codex queries below.

## Diagnosis

Several historical response shapes are locally plausible; only the selected current API version determines fields, enums, media types, and status codes.

## Fix

```
Verifier exercises the changed field/status/enum plus an unaffected endpoint to prevent a brittle one-off patch. Verify deployment metadata and end-to-end link/call behavior.
```

## Avoid

- Changing local code without checking the current external contract.
- Retrying the same install, build, or API call with no version/source change.
- Applying a broad unsafe bypass when a narrow compatibility fix is available.

## Observed Codex Queries

- Firebase Apple SDK HTTPSCallable final Swift clients subclass wrapper no longer compiles
- site:github.com/firebase/firebase-ios-sdk HTTPSCallable final class
- FirebaseFunctions HTTPSCallable Swift reference final
- FirebaseFunctions HTTPSCallable Swift API reference
- https://firebase.google.com/docs/reference/swift/firebasefunctions/api/reference/Classes/HTTPSCallable
- 'final class HTTPSCallable' in https://firebase.google.com/docs/reference/swift/firebasefunctions/api/reference/Classes/HTTPSCallable
- site:firebase.google.com/support/release-notes/ios FirebaseFunctions HTTPSCallable final
- https://raw.githubusercontent.com/firebase/firebase-ios-sdk/master/FirebaseFunctions/Sources/HTTPSCallable.swift
- https://raw.githubusercontent.com/firebase/firebase-ios-sdk/11.15.0/FirebaseFunctions/Sources/HTTPSCallable.swift
- https://github.com/firebase/firebase-ios-sdk/blob/11.15.0/FirebaseFunctions/Sources/HTTPSCallable.swift

## Sources

- Firebase Apple SDK release notes / Firebase 12: https://firebase.google.com/support/release-notes/ios
- Official reference opened by Codex: https://firebase.google.com/docs/reference/swift/firebasefunctions/api/reference/Classes/HTTPSCallable
- Official reference opened by Codex: https://raw.githubusercontent.com/firebase/firebase-ios-sdk/master/FirebaseFunctions/Sources/HTTPSCallable.swift
- Official reference opened by Codex: https://raw.githubusercontent.com/firebase/firebase-ios-sdk/11.15.0/FirebaseFunctions/Sources/HTTPSCallable.swift
- GitHub source file or repository reference: https://github.com/firebase/firebase-ios-sdk/blob/11.15.0/FirebaseFunctions/Sources/HTTPSCallable.swift