Instant Structured Streaming

When you need low-latency feedback (real-time UI, progressive summaries), you usually want structured output as it streams. Instant is built for that.

Define the structure

from agently import Agently

agent = Agently.create_agent()

response = (
  agent
  .input("Explain recursion in one sentence and give 2 tips")
  .output({
    "definition": (str, "One-line definition"),
    "tips": [("str", "Short tip")]
  })
  .get_response()
)

Use the Instant generator

for msg in response.get_generator(type="instant"):
  if msg.path == "definition" and msg.delta:
    print(msg.delta, end="", flush=True)
  if msg.wildcard_path == "tips[*]" and msg.delta:
    print(msg.delta, end="", flush=True)
print()

Paths and consumption

• msg.path is the concrete field path
• msg.wildcard_path is for list fields
• msg.delta is the incremental chunk

Instant keeps the schema stable while the text streams in.