Use LangSmith with n8n

LangSmith is a developer platform created by the LangChain team. You can connect your n8n instance to LangSmith to record and monitor runs in n8n, just as you can in a LangChain application.

Feature availability

Self-hosted n8n only.

Connect your n8n instance to LangSmith

1. Log in to LangSmith and get your API key.

2. Set the LangSmith environment variables:

   Variable	Value
   LANGCHAIN_ENDPOINT	"https://api.smith.langchain.com"
   LANGCHAIN_TRACING_V2	true
   LANGCHAIN_API_KEY	Set this to your API key

   Set the variables so that they're available globally in the environment where you host your n8n instance. You can do this in the same way as the rest of your general configuration. These aren't n8n environment variables, so don't try to set them using the n8n configuration file.

3. Restart n8n.

For information on using LangSmith, refer to LangSmith's documentation.