AI Agents
server-sdk-python
The official Python SDK for building on Vapi's voice AI platform.
★ 53 starsNOASSERTION
View guide →Official SDKs for tracing with LangSmith.
langsmith-sdk is an open-source ai agents project by langchain-ai (langchain-ai/langsmith-sdk on GitHub). It has 1,069 GitHub stars and 308 forks, is released under the MIT license, and was last updated on GitHub on 7 October 2026.
Write down the job you will use the project for before touching any code.
Download the source and read the README's setup section first.
Run the install steps and add any required API keys or config.
Follow the example in the docs to confirm everything works.
Official SDK implementations.
Send run traces to LangSmith.
Feed eval data into the platform.
From the LangChain team.
Built for LLM tracing and monitoring.
Permissive licensing.
Install the LangSmith client.
pip install langsmithAdd your LangSmith API key.
export LANGSMITH_API_KEY=your_key_hereInstrument your app per the docs and watch runs appear.
# see https://docs.smith.langchain.com/It is maintained by LangChain at langchain-ai/langsmith-sdk, with 308 forks.
The SDK is free under MIT; the LangSmith hosted platform has free and paid tiers.
The SDK is free, but you need a LangSmith account — check their current plan tiers.
This is the official LangSmith client; OpenLLMetry is vendor-neutral OpenTelemetry instrumentation.
Install the package, set your API key, and follow the docs to trace your first run.
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