Question: Inquiry on Session Management and Parameter Passing in Langflow API about langflow HOT 3 OPEN

Hey @qiaolb! I'm here to help you with any questions or issues you have regarding Langflow API. I can assist you with bug fixes, troubleshooting, and more while you wait for a human maintainer. Let's tackle these inquiries together!

To ensure distinct and isolated sessions for multiple users accessing Langflow flows via curl, you can use the session_id parameter in the SimplifiedAPIRequest. Each user should be assigned a unique session_id to maintain session isolation.

For passing custom parameters to a Langflow flow through curl, you can use the tweaks parameter in the request body. The tweaks parameter allows you to customize the flow's behavior by modifying its parameters and components.

Here is an example of how to use curl to run a flow with custom parameters and ensure session isolation:

curl -X 'POST' \
  'http://<your_server>/run/{flow_id}' \
  -H 'accept: application/json' \
  -H 'Content-Type: application/json' \
  -H 'x-api-key: YOUR_API_KEY' \
  -d '{
        "input_value": "Sample input",
        "input_type": "chat",
        "output_type": "chat",
        "tweaks": {
            "Component Name": {"parameter_name": "value"},
            "parameter_name": "value"
        },
        "session_id": "unique_session_id_for_user"
      }'

In this example:

• Replace <your_server> with the actual server address.
• Replace {flow_id} with the specific flow ID you want to run.
• Replace YOUR_API_KEY with your actual API key.
• Customize the input_value, input_type, output_type, and tweaks as needed.
• Use a unique session_id for each user to ensure session isolation ^[1].

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