Natively compiled TypeScript, with the whole stack built in.

// A local AI chat app of agents: conversations, plans, sub-agents, tools that wait for approval, attachments and a
// choice of models. The models run on this computer, or come from your giz.ai account (`giz auth login`) or any
// OpenAI-compatible API (AI_URL, AI_API_KEY). The page (pages/index.ghtml) writes a message as a row; Chat.serve runs
// the agent and writes its answer as rows while it comes, and every open page shows them live.
// Run: giz run main.giz, then open http://127.0.0.1:8080. With TLS_DOMAINS=chat.example.com set, it gets its
// certificate and serves HTTPS with HTTP/2 and HTTP/3.
import {System} from "gizlang:system";
import * as Pages from "gizweb:pages";
import * as Chat from "gizweb:chat";
import * as Ai from "gizai:ai";
import * as Agent from "gizai:agent";
import {site} from "./pages/.routes";

/** Draws a picture. */
type Picture = {
    /** What the picture shows, in detail: the subject, the place, the light and the style. */
    prompt: string;
};
/** Films a video clip of about four seconds. */
type Clip = {
    /** What happens in the clip, in detail. */
    prompt: string;
};
/** The address of the file the tool made. */
type Made = { file: string; };

function main(sys: System): i64 {
    const app = Pages.app(sys, site, Chat.shapes());
    const ai = Ai.studio(sys);
    const draw = Agent.tool<Picture, Made>(
        "draw", (p: Picture): Made => ({ file: app.file(ai.image(p.prompt), "png") })
    );
    const film = Agent.tool<Clip, Made>("film", (c: Clip): Made => ({ file: app.file(ai.video(c.prompt), "mp4") }));
    Chat.serve(
        app, ai, Agent.agent(ai.model(), "You are a helpful assistant. Draw or film when asked to.", [draw, film])
    );
    return app.listen(8080);
}

npm install -g @gizai/cli
giz init my-chat --template chat && cd my-chat
giz run main.giz                 # then open http://127.0.0.1:8080