Inject cache_control: {"type": "ephemeral"} on the system message and
last tool definition for providers that support prompt caching. Adds
supports_prompt_caching flag to ProviderSpec (enabled for Anthropic only)
and skips caching when routing through a gateway.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Add VolcEngine ProviderSpec entry in registry.py
- Add volcengine to ProvidersConfig class in schema.py
- Update model providers table in README.md
- Add description about VolcEngine coding plan endpoint
- Strip non-standard keys like 'reasoning_content' before sending to LLM
- Always include 'content' key in assistant messages (required by StepFun)
- Add _sanitize_messages to LiteLLMProvider to prevent 400 BadRequest errors
Add SiliconFlow (硅基流动) as an OpenAI-compatible gateway provider.
SiliconFlow hosts multiple models (Qwen, DeepSeek, etc.) via an
OpenAI-compatible API at https://api.siliconflow.cn/v1.
Changes:
- Add ProviderSpec for siliconflow in providers/registry.py
- Add siliconflow field to ProvidersConfig in config/schema.py
Co-authored-by: Cursor <cursoragent@cursor.com>
- Add is_oauth and oauth_provider fields to ProviderSpec
- Update _make_provider() to use registry for OAuth provider detection
- Update get_provider() to support OAuth providers (no API key required)
- Mark OpenAI Codex as OAuth-based provider in registry
This improves the provider registry architecture to support OAuth-based
authentication flows, making it extensible for future OAuth providers.
Benefits:
- OAuth providers are now registry-driven (not hardcoded)
- Extensible design: new OAuth providers only need registry entry
- Backward compatible: existing API key providers unaffected
- Clean separation: OAuth logic centralized in registry
- Add OpenAI Codex ProviderSpec to registry.py
- Add openai_codex config field to ProvidersConfig in schema.py
- Mark Codex as OAuth-based (no API key required)
- Set appropriate default_api_base for Codex API
This integrates the Codex OAuth provider with the refactored
provider registry system introduced in upstream commit 299d8b3.
