When creating AI applications, you can use external tools to obtain additional data through Custom Endpoints and assemble it into the prompt as additional information for the LLM.
Extension Point
app.external_data_tool.query: Application external data tool query extension point.
This extension point passes the application variable content input by the end user and the conversation input content (fixed parameter for conversational applications) to the API as parameters.
You need to implement the corresponding tool query logic and return query results as string type.
Request Body
Example:
API Response
Example:
Last modified on July 2, 2026