Add proxy support for providers based on
[doc](https://www.python-httpx.org/advanced/proxies/):
- Add per-provider proxy support (HTTP and SOCKS5) for all 4 providers:
nvidia_nim, open_router, lmstudio, llamacpp
- Each provider gets its own env var (NVIDIA_NIM_PROXY,
OPENROUTER_PROXY, LMSTUDIO_PROXY, LLAMACPP_PROXY) for independent proxy
configuration
---------
Co-authored-by: Alishahryar1 <alishahryar2@gmail.com>
## Summary
* add native DeepSeek provider support via the shared OpenAI-compatible
provider base
* allow `deepseek/...` model prefixes in config validation
* add `DEEPSEEK_API_KEY` and `DEEPSEEK_BASE_URL` settings
* add DeepSeek entries to `.env.example` and `config/env.example`
* implement `DeepSeekProvider` and register it in provider dependencies
* add a DeepSeek request builder with DeepSeek-specific thinking payload
handling
* preserve Anthropic thinking blocks as `reasoning_content` for
DeepSeek-compatible continuation flows
* update `claude-pick` to discover DeepSeek models from the DeepSeek API
* document DeepSeek usage in `README.md`
* add tests for config validation, provider dependency wiring, request
building, and streaming behavior
## Motivation
DeepSeek exposes an OpenAI-compatible API and can be used directly
without routing through OpenRouter. This lets users spend their existing
DeepSeek balance through the proxy while keeping the same Claude Code
workflow and per-model provider mapping.
## Example
```dotenv
DEEPSEEK_API_KEY="sk-..."
DEEPSEEK_BASE_URL="https://api.deepseek.com"
MODEL_OPUS="deepseek/deepseek-reasoner"
MODEL_SONNET="deepseek/deepseek-chat"
MODEL_HAIKU="deepseek/deepseek-chat"
MODEL="deepseek/deepseek-chat"
---------
Co-authored-by: Alishahryar1 <alishahryar2@gmail.com>
Adds max_concurrency cap to GlobalRateLimiter using asyncio.Semaphore.
A request now waits for a concurrency slot before the sliding window rate
limit check, so at most N streams are open to the provider simultaneously,
even when the rate window would allow more.
Changes:
- providers/rate_limit.py: max_concurrency param, _concurrency_sem, concurrency_slot() asynccontextmanager
- providers/openai_compat.py: pass max_concurrency to limiter; wrap execute_with_retry + stream iteration in concurrency_slot()
- providers/base.py: max_concurrency field on ProviderConfig
- config/settings.py: provider_max_concurrency setting (PROVIDER_MAX_CONCURRENCY env var, default None = unlimited)
- api/dependencies.py: pass provider_max_concurrency into all three provider ProviderConfig instantiations
- .env.example: document PROVIDER_MAX_CONCURRENCY (commented out)
- tests/providers/test_provider_rate_limit.py: 5 new tests covering concurrency limit enforcement, slot release on exception, noop when unconfigured
- tests/api/test_dependencies.py: add provider_max_concurrency=None to mock settings helper
https://claude.ai/code/session_014mrF1WMNgmNjtPBuoQHsbg
When NVIDIA_NIM_API_KEY or OPENROUTER_API_KEY is empty or not set,
the proxy forwarded requests without a valid Authorization header,
causing providers to return 403 with 'Header of type authorization
was missing'.
Now fail fast with HTTP 503 and a clear message telling users to add
the key to .env, with links to obtain keys.
Fixes#29
Co-authored-by: Ali Khokhar <alishahryar2@gmail.com>
- Add MessageTree.set_current_task() method
- Update tree_processor to use set_current_task instead of _current_task
- Move nim_settings out of ProviderConfig, pass only to NvidiaNimProvider
- Update api/dependencies and all tests
Co-authored-by: Ali Khokhar <alishahryar2@gmail.com>
Updated the README to include new timeout settings. Implemented these timeouts in the provider classes and added corresponding tests to ensure they are correctly passed to the client. Also included environment variable support for the new settings.
- Introduced `LMStudioProvider` to the provider system.
- Added a new fixture `lmstudio_provider` in `conftest.py` for testing.
- Updated `get_provider` function to handle `lmstudio` as a valid provider type.
- Enhanced README and `.env.example` to include LM Studio configuration details.
- Updated settings to accommodate LM Studio's base URL and provider type.
- Added tests to verify the functionality of the LM Studio provider.
- Replaced NVIDIA NIM and OpenRouter specific rate limit settings with a generic provider rate limit in settings, tests, and environment files.
- Updated README.md to reflect the new provider rate limit configuration.
- Adjusted tests to validate the new provider rate limit attributes.
- Introduced OpenRouter as a new provider option in settings and environment configuration.
- Updated README.md to include instructions for using OpenRouter.
- Enhanced the message converter to support reasoning content for OpenRouter.
- Added tests for OpenRouter provider functionality and message conversion.
- Updated dependencies to include OpenRouterProvider.
