Accepting Inputs

Your graph is an encapsulated system. Input is injected via graph.invoke().

The Input Schema

Ideally, your Input Schema should be a subset of your State Schema.

# 1. Define inputs
inputs = {
    "messages": [("user", "Hello, do you know the weather?")],
    "user_id": "12345"
}

# 2. Inject
# The graph assigns these values to the initial state
graph.invoke(inputs)

Sanitizing Input

The first node (Entry Point) is the best place to sanitize input.

• Truncate overly long messages (to save tokens).
• Remove PII (Personally Identifiable Information).
• Format the user query into a structured prompt.