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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fn handle_ucp_webhook(request: Request) -> AxResult<()> {
    // Verify signer profile, RFC 9421 signature, digest, freshness,
    // key rotation, and replay state before publishing.
    let order = verify_ucp_request(request)?;
    let identity = lookup_buyer_identity(&order.checkout_id)?;
    runtime.lock().unwrap().publish(
        AxEventEnvelope {
            specversion: "1.0".into(),
            id: order.id, source: "ucp://orders".into(),
            r#type: "ucp.order.fulfilled".into(),
            subject: Some(order.checkout_id),
            data: order.data,
            extensions: serde_json::Map::new(), correlation: vec![],
        },
        &identity, "authenticated",
    )?;
    Ok(())
}

Run itIn your own project

cargo add axllm

use axllm::{ai, ax};
use serde_json::json;

let llm = ai("openai", json!({"apiKey": std::env::var("OPENAI_API_KEY")?}))?;
let 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 -- rust src/examples/rust/long-agents/smart_defaults_agent.rs

Active practice

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