The LangSmith API is used to programmatically create and manage LangSmith
resources.
## Host
http://localhost:1984
## Authentication
To authenticate with the LangSmith API, set the `X-Api-Key` header to a valid
[LangSmith API key](https://docs.langchain.com/langsmith/create-account-api-key#create-an-api-key).
Version0.1.0-beta.17compared with
Version Details
| 0.1.0-beta.16 | 0.1.0-beta.17 | |
|---|---|---|
| Release date | Jul 18, 2026 | Jul 18, 2026 |
| Licenses | MIT | MIT |
| Vulnerabilities | None | None |
No dependency changes compared to the selected version.