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System One

Jevmaxxing

Jev picks every action for a Notte cloud browser session over CDP, choosing from a fresh action space at each step with a replay of every decision.

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nottelabs/notte-jevmaxxing on GitHub

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TypeScript
Last push
21 Sep 2026

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How it uses Jev

started = time.perf_counter()
result = post_json("https://api.typesafe.ai/v1/systemone", os.environ["TYPESAFE_API_KEY"], body)
operation_answer = validate_choice(result["answers"].get("operation", {}), operations)
operation = operation_answer["choice"]
target = None
target_answer = None
probabilities = {}
if operation in targets:
    # Unused target heads cannot cause an action. Validate the head selected by the operation.
    target_answer = validate_choice(result["answers"].get(operation.lower() + "_target", {}), targets[operation])
    target = target_answer["choice"]
    choice = targets[operation][target]["id"]
    probabilities = {a["id"]: target_answer["probabilities"][index] for index, a in targets[operation].items()}
else:
    choice = controls[operation]["id"] if operation in controls else operation

View in python/jev_ultrafast/model.py

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