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-- A bookshop API. The `require` lines are the whole permission
-- surface: a port, one database file, one secret. Nothing else.
intent: "public read API; writes need the staff token"

require serve(8080)
require db("./shop.db")
require secret("API_TOKEN")

task check_token(token)
    let want be hmac_sha256("staff", token)
    when verify_hmac("staff", want, secret("API_TOKEN"))
        give {"role": "staff"}
    give nothing

serve on 8080
    auth with check_token
    rate_limit 120 per minute

    route "GET /books"
        give paged("SELECT id, title, price FROM books")

    route "POST /books" requires auth
        expect body {title: text, price: number}
        let b be json of request
        sql_exec("INSERT INTO books (title, price) VALUES (?, ?)",
                 [b.title, b.price])
        give created(b)

    route "GET /about"
        let doc be page([heading(1, "Bookshop"),
                         prose("HTML or Markdown, one route.")],
                        {"title": "Bookshop"})
        give content(doc)

-- An agent that triages support tickets. The model decides;
-- a human approves refunds; the API key is a sealed secret.
intent: "triage open tickets; refunds wait for a human"

require llm
require net("api.example.com")
require secret("SUPPORT_TOKEN")

let api be "https://api.example.com"
let auth be {"Authorization": bearer(secret("SUPPORT_TOKEN"))}
let r be http_get(api + "/tickets?open=1", auth)
let tickets be json_decode(body of r)

each t in tickets
    let msg be t["text"]
    let kind be decide between ["bug", "billing", "other"] given msg
    when kind == "billing"
        let amount be analyze msg for "the amount to refund"
        let who be t["customer"]
        approve "Refund " + text(amount) + " to " + who + "?" within 1h
    otherwise
        let reply be generate "a short, kind answer" given msg
        let url be api + "/tickets/" + t["id"] + "/reply"
        http_post(url, {"text": reply}, auth)