LangDB

LangDB is an AI Gateway for seamless access to 350+ LLMs. Secure, govern, and optimize AI Traffic across LLMs using OpenAI-Compatible APIs.

For detailed integration instructions, see the LangDB Kern documentation.

Authentication

Set your LANGDB_API_KEY environment variable. Get your key from here.

1export LANGDB_API_KEY=***
2export LANGDB_PROJECT_ID=***

1setx LANGDB_API_KEY ***
2setx LANGDB_PROJECT_ID ***

Example

Use LangDB with your Agent:

1from kern.agent import Agent
2from kern.models.langdb import LangDB
3
4agent = Agent(
5    model=LangDB(id="gpt-5-mini"),
6    markdown=True
7)
8
9# Print the response in the terminal
10agent.print_response("Share a 2 sentence horror story.")

Params

Parameter	Type	Default	Description
`id`	`str`	`"gpt-4o-mini"`	The id of the model to use through LangDB
`name`	`str`	`"LangDB"`	The name of the model
`provider`	`str`	`"LangDB"`	The provider of the model
`api_key`	`Optional[str]`	`None`	The API key for LangDB (defaults to LANGDB_API_KEY env var)
`base_url`	`str`	`"https://api.langdb.ai/v1"`	The base URL for the LangDB API

LangDB also supports the params of OpenAI.