Unit 11 · Ship AI systems you can operate

Route webhooks through the same event runtime

You route authenticated webhooks, timers, queues, and application events through AxEventRuntime. UCP commerce events use the same explicit wake and resume policy.

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Worked example

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def handle_ucp_webhook(request):
    # Verify signer profile, RFC 9421 signature, digest, freshness,
    # key rotation, and replay state before publishing.
    order = verify_ucp_request(request)
    identity_scope = lookup_buyer_identity(order["checkout_id"])
    runtime.publish(
        AxEventEnvelope(
            order["id"], "ucp://orders",
            "ucp.order.fulfilled", order,
        ),
        identity_scope=identity_scope,
        trust="authenticated",
    )
    return Response(status=202)

Run itIn your own project

pip install axllm

from axllm import ai, ax

llm = ai('openai', api_key=os.environ['OPENAI_API_KEY'])
classify = ax('review:string -> sentiment:class "positive, negative, neutral"')

Set OPENAI_APIKEY in your environment before running provider-backed code.

In the ax repo

From a clone of the ax repo:

npm run example -- python src/examples/python/long-agents/smart-defaults-agent.py

Active practice

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