Playground
The Playground is a dynamic interface designed for real-time interaction with AIs, allowing users to chat, access memories and monitor inputs and outputs. Here, users can directly prototype and their models, making adjustments and observing different outcomes.
As long as you have an Input or Output component working, you can open it up by clicking the Playground button.
Notice how the Playground's window arrangement changes depending on what components are being used. Langflow can be used for applications that go beyond chat-based interfaces.
You can also open a flow's Playground without entering its workspace. From My Collections or Langflow Store, click the Playground in one of the projects card.
Memory Management
Click the Memories tab to open a table of previous interactions for a specific flow.
Whenever you send a message from the Playground interface, under the Memories tab you'll see a table of previous interactions for that session.
Langflow allows every chat message to be stored, and a single flow can have multiple memory sessions.
Chat conversations store messages categorized by a Session ID. A single flow can host multiple Session IDs, and different flows can share the same Session ID.
Individual messages in chat memory can be edited or deleted. Modifying these memories will influence the behavior of the chatbot responses.
To learn more about memories in Langflow, see Chat Memory.
Use custom Session IDs for multiple user interactions
Session ID values are used to track user interactions in a flow. They can be configured in the Advanced Settings of the Chat Input and Chat Output components.
By default, if the Session ID value is empty, it is set to the same value as the Flow ID. This means every API call will use the same Session ID, and you’ll effectively have one session.
To have more than one session in a single flow, pass a specific Session ID to a flow with the session_id parameter in the URL. All the components in the flow will automatically use this session_id value.
Post a message to a flow with a specific Session ID with curl:
_10curl -X POST \_10 "http://127.0.0.1:7860/api/v1/run/4017e9f2-1fec-4643-bb05-165a8b50c4b3?stream=false" \_10 -H 'Content-Type: application/json' \_10 -d '{"input_value": "message",_10 "output_type": "chat",_10 "input_type": "chat",_10 "session_id": "YOUR_SESSION_ID"_10}'
Check your flow’s Memories tab. In addition to the messages stored for the Default Session, a new chat session is started with your new Session ID.
Chat Input and Chat Output components can also store a session_id parameter as a Tweak for specific sessions. The Playground will still display all available sessions, but the flow will use the value stored in the session_id tweak.
_10curl -X POST \_10 "http://127.0.0.1:7860/api/v1/run/4017e9f2-1fec-4643-bb05-165a8b50c4b3?stream=false" \_10 -H 'Content-Type: application/json' \_10 -d '{"input_value": "message",_10 "output_type": "chat",_10 "input_type": "chat",_10 "tweaks": {_10 "session_id": "YOUR_SESSION_ID"_10 }_10}'
