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

See the idea in context

func handleUCPWebhook(request *http.Request) error {
    // Verify signer profile, RFC 9421 signature, digest, freshness,
    // key rotation, and replay state before publishing.
    order, err := verifyUCPRequest(request)
    if err != nil { return err }
    identityScope := lookupBuyerIdentity(order.CheckoutID)
    _, err = runtime.Publish(ax.AxEventEnvelope{
        SpecVersion: "1.0", ID: order.ID, Source: "ucp://orders",
        Type: "ucp.order.fulfilled", Data: order.Data,
    }, identityScope, "authenticated")
    return err
}

Run itIn your own project

go get github.com/ax-llm/ax/packages/go

package main

import (
    "context"
    "fmt"
    "os"

    axllm "github.com/ax-llm/ax/packages/go"
)

func main() {
    client := axllm.NewAI("openai", map[string]axllm.Value{"apiKey": os.Getenv("OPENAI_API_KEY")})
    classify := axllm.NewAx("review:string -> sentiment:class \"positive, negative, neutral\"", nil)
    result, err := classify.Forward(context.Background(), client, map[string]axllm.Value{
        "review": "Useful and boring in the best way."
    }, nil)
    if err != nil {
        panic(err)
    }

    fmt.Println("sentiment:", result.(map[string]axllm.Value)["sentiment"])
}

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 -- go src/examples/go/long-agents/smart_defaults_agent.go

Active practice

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Answer 2 in a row to learn this · attempt 1

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