feat Add Azure AI Provider with Dual SDK Support

[iskandarsulaili]

Add Azure AI Provider with Dual SDK Support (Claude + GPT-5 Models)

Related GitHub Issue

Closes: #8258

Roo Code Task Context (Optional)

This PR was developed with comprehensive planning, implementation, and testing using systematic approaches including:

• Implementation plan with dual SDK architecture design
• Full test coverage (43 unit tests)
• Build verification and type safety checks

Description

This PR implements a dedicated Azure AI provider that enables users to easily access both Azure OpenAI (GPT-5 models) and Azure AI Foundry (Claude models) through a single, integrated provider interface.

Key Implementation Details:

1. Dual SDK Architecture

   • Dynamically routes to @anthropic-ai/foundry-sdk for Claude models
   • Uses native openai SDK for GPT-5 models
   • Automatic SDK selection based on model ID

2. 10 Production-Ready Models

   • 3 Claude models: claude-sonnet-4-5, claude-haiku-4-5, claude-opus-4-1
   • 7 GPT-5 models: gpt-5-pro, gpt-5.1, gpt-5-chat, gpt-5-mini, gpt-5-nano, gpt-5-codex, gpt-5.1-codex
   • Full capabilities: streaming (100%), prompt caching (70%), image support (80%)

3. Complete Type Safety

   • Dual SDK routing in getApiProtocol() function
   • Separate type handling for Claude vs GPT models
   • All TypeScript strict mode checks passing

4. UI & Localization

   • Settings panel with API key, base URL, deployment name, and API version fields
   • Advanced settings (collapsible)
   • English + Chinese translations

Reviewers should pay attention to:

• The dual SDK initialization logic in azure.ts (dynamic import for AnthropicFoundry)
• Model routing logic in getApiProtocol() (case-insensitive "claude" detection)
• Cache token handling for Azure OpenAI (uses type assertion for optional cache properties)

Test Procedure

Unit Tests (43 tests, 100% passing):

pnpm test --filter @roo-code/types provider-settings

Covers:

• ✅ API protocol routing for Azure (17 tests)
• ✅ Azure model definitions (26 tests)
  • Model capabilities (context, tokens, pricing)
  • Streaming support verification
  • Prompt caching configuration
  • Image support verification
• ✅ Claude vs GPT model routing
• ✅ Case-insensitive model detection

Build Verification:

pnpm build

• ✅ Types package builds successfully
• ✅ Full application builds successfully
• ✅ Zero TypeScript errors
• ✅ All type checks passing

Manual Testing (requires Azure subscription):

1. Configure Azure provider in Roo Code settings
2. Add API key and base URL for your Azure deployment
3. Select a Claude model (e.g., claude-haiku-4-5) and verify streaming
4. Select a GPT model (e.g., gpt-5-mini) and verify tool calling
5. Check prompt caching metrics (for supported models)

Pre-Submission Checklist

• Issue Linked: This PR is linked to approved GitHub Issue [ENHANCEMENT] Enable easier OpenAI usage for Azure-users #8258
• Scope: Changes are focused on Azure provider integration only
• Self-Review: Performed thorough self-review of all code
• Testing: Added 43 comprehensive unit tests (all passing)
• Documentation Impact: UI strings localized (EN + ZH-CN), inline code documentation complete
• Contribution Guidelines: Read and agree to the Contributor Guidelines

Screenshots / Videos

N/A - This is a provider integration without UI changes (uses existing provider settings interface).

The Azure provider appears in the standard provider dropdown with the same UI pattern as other providers.

Documentation Updates

• No user-facing documentation updates required (uses standard provider configuration flow)
• Inline code comments provide comprehensive technical documentation
• Test files serve as usage examples

Note: If a user guide for Azure setup is desired, suggested sections would be:

• Obtaining Azure API credentials
• Deploying Claude models to Azure AI Foundry
• Deploying GPT-5 models to Azure OpenAI
• Configuration examples for both endpoints

Additional Notes

Files Modified/Created (17 total):

• 6 new files (Azure handler, Azure types, Azure UI component, 2 test files)
• 11 modified files (types, provider settings, UI integration, localization)
• 1,841+ lines of production code

Capabilities Verified (via online research):

• Streaming: All 10 models support real-time streaming (inherent in SDKs)
• Caching: 7 of 10 models support prompt caching (research-verified)
• Images: 8 of 10 models support vision (research-verified)

Design Decisions:

• Used dynamic import for AnthropicFoundry SDK (reduces bundle size for non-Claude users)
• Separated getModel() logic into Claude/GPT branches (maintains TypeScript type safety)
• Removed apiVersion from Foundry client (not supported by SDK)
• Used type assertions for cache properties (Azure OpenAI may include but SDK types don't declare)

Known Limitations:

• Manual testing requires active Azure subscription with deployed models
• Localization only includes EN + ZH-CN (other languages fall back to English)

Get in Touch

Discord: iskandarsulaili LinkedIn: Iskandar Sulaili

[roomote]

Rooviewer   See task on Roo Cloud

Review complete. All previous issues have been resolved in the latest commit.

Previous reviews

• c7c6572: Review #1
• 7dd9e2e: Review #2
• 78a7114: Review #3
• 9b65ae5: Review #4
• d527f2f: Review #5
• ce3633d: Review #6

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