langwatch 0.2.0rc3

LangWatch Python SDK, for monitoring your LLMs

LangWatch Python SDK 🐍

A Python SDK to monitor and observe your LLM applications using LangWatch.

[!CAUTION] This SDK is currently being developed and is not yet ready for production use. Please use the legacy SDK until this notice is removed.

Migration progress

Legend

• ✅: Complete
• 🚧: Migration in progress
• ❌: Pending migration
• ⚰: Deprecated
• 🗑️: Removed

Migration progress

Feature	Status	Tested	Description
endpoint	✅	🔄
api_key	✅	🔄
enabled	🗑️	🔄
sampling_rate	✅	🔄
logger	✅	🔄
trace	✅	🔄
span	✅	🔄
get_current_trace	✅	🔄
get_current_span	✅	🔄
create_span	🗑️	🔄	This was marked for deprecation, and has been deprecated.
capture_rag	🗑️	🔄	This was marked for deprecation, and has been deprecated.
langchain	✅	🔄
dspy	✅	🔄
login	❌	🔄
evaluations	✅	🔄
guardrails	✅	🔄
openai	✅	🔄
litellm	✅	🔄
ContextSpan	✅	🔄
ContextSpan.update	✅	🔄
ContextSpan.add_evaluation	✅	🔄
ContextSpan.evaluate	✅	🔄
ContextSpan.async_evaluate	✅	🔄
ContextSpan.end	✅	🔄
ContextTrace	✅	🔄
ContextTrace.update	✅	🔄
ContextTrace.add_evaluation	✅	🔄
ContextTrace.evaluate	✅	🔄
ContextTrace.async_evaluate	✅	🔄
ContextTrace.deferred_send_spans	🗑️	🔄
ContextTrace.send_spans	🗑️	🔄
ContextTrace.append_span	🗑️	🔄
ContextTrace.get_parent_id	🗑️	🔄
ContextTrace.get_current_span	✅	🔄
ContextTrace.set_current_span	🗑️	🔄
ContextTrace.reset_current_span	🗑️	🔄
ContextTrace.get_langchain_callback	✅	🔄
ContextTrace.autotrack_openai_calls	✅	🔄
ContextTrace.autotrack_litellm_calls	✅	🔄
ContextTrace.autotrack_dspy	✅	🔄
ContextTrace.share	✅	🔄
ContextTrace.unshare	✅	🔄

Installation

pip install langwatch==0.3.0rc1

Usage

Set the following environment variables:

• LANGWATCH_API_KEY: Your LangWatch API key.
• LANGWATCH_ENDPOINT: Your LangWatch endpoint, this is only required if you are using a self-hosted LangWatch instance.

import langwatch
import os
from openai import OpenAI

@langwatch.trace()
def main():
    client = OpenAI(api_key=os.getenv("OPENAI_API_KEY"))
    langwatch.get_current_trace().autotrack_openai_calls(client)

    # Any calls to OpenAI will now be tracked by LangWatch

Contributing

We welcome contributions to LangWatch! Here's how you can help:

1. Fork the repository
2. Create a new branch (git checkout -b feature/amazing-feature)
3. Make your changes
4. Run the tests (pytest)
5. Commit your changes (git commit -m 'Add amazing feature')
6. Push to the branch (git push origin feature/amazing-feature)
7. Open a Pull Request

Please make sure to update tests as appropriate and follow our coding standards.

Support

• Documentation: docs.langwatch.ai
• Issues: GitHub Issues
• Discord: Join our community
• Email: [e-mail]