[Firebase AI] URL Context tool intermittently throws 500 errors on Google AI

[andrewheard]

Description

Using the URL Context tool with the Gemini Developer API (Google AI) frequently results in HTTP 500 errors from the backend.

Reproducing the issue

The integration test intermittently fails: https://github.com/firebase/firebase-ios-sdk/blob/541ac342abead313f2ce0ccf33278962b5c1e43c/FirebaseAI/Tests/TestApp/Tests/Integration/GenerateContentIntegrationTests.swift#L427-L452

Firebase SDK Version

12.4.0

Xcode Version

26.0

Installation Method

Swift Package Manager

Firebase Product(s)

AI Logic

Targeted Platforms

All

Relevant Log Output

If using Swift Package Manager, the project's Package.resolved

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If using CocoaPods, the project's Podfile.lock

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