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// @ts-ignore
import { OpenAI } from "https://esm.town/v/std/openai?v=4";
// --- TYPE DEFINITIONS ---
  state: State,
  options: { N?: number; T?: Exponents; preset?: "W1" | "W3" | "W5"; theme?: string },
  openai: OpenAI,
): Promise<State> {
  const s = clone(state);
  if (theme) {
    const completion = await openai.chat.completions.create({
      model: "gpt-4o",
      messages: [
}
async function fire(state: State, openai: OpenAI): Promise<{ state: State; result: FireResult }> {
  if (!state.boss) throw new Error("No boss to fire at.");
  const s = clone(state);
    result: { ...resultCore, damageApprox: resultCore.damageFraction.approx },
  };
  const completion = await openai.chat.completions.create({
    model: "gpt-4o",
    messages: [
    }
    const openai = new OpenAI();
    const body = await req.json().catch(() => ({}));
    if (!isObject(body) || !("action" in body)) {
          payload.state,
          { N: payload.N, T: payload.T, preset: payload.preset, theme: payload.theme },
          openai,
        );
        return ok({ state });
      case "fire": {
        if (!payload.state) return err("fire requires { state } with a boss present");
        const { state, result } = await fire(payload.state, openai);
        return ok({ state, result });
      }

_2 or _3) to create a fresh table.
### OpenAI
```ts
import { OpenAI } from "https://esm.town/v/std/openai";
const openai = new OpenAI();
const completion = await openai.chat.completions.create({
  messages: [
    { role: "user", content: "Say hello in a creative way" },

const REALTIME_BASE_URL = "https://api.openai.com/v1/realtime";
const OPENAI_API_KEY = Deno.env.get("OPENAI_API_KEY");
if (!OPENAI_API_KEY) {
  throw new Error("🔴 OpenAI API key not configured");
}
export function makeHeaders(contentType?: string) {
  const obj: Record<string, string> = {
    Authorization: `Bearer ${OPENAI_API_KEY}`,
  };
  if (contentType) obj["Content-Type"] = contentType;

sip.post("/", async (c) => {
  // Verify the webhook.
  const OPENAI_SIGNING_SECRET = Deno.env.get("OPENAI_SIGNING_SECRET");
  if (!OPENAI_SIGNING_SECRET) {
    console.error("🔴 webhook secret not configured");
    return c.text("Internal error", 500);
  }
  const webhook = new Webhook(OPENAI_SIGNING_SECRET);
  const bodyStr = await c.req.text();
  let callId: string | undefined;

# hello-realtime
**Hello Realtime** is a OpenAI Realtime app that supports both WebRTC and SIP
(telephone) users. You can access the app via WebRTC at
[hello-realtime.val.run](https://hello-realtime.val.run), or via SIP by calling
server-side websocket interface.
If you remix the app, you'll just need to pop in your own `OPENAI_API_KEY` (from
[platform.openai.com](https://platform.openai.com)), and if you want SIP, the
`OPENAI_SIGNING_SECRET`.
## Architecture
   - Browser connects to frontend
   - creates WebRTC offer
   - `/rtc` endpoint handles SDP negotiation with OpenAI
   - observer established to monitor session
2. **SIP Flow**:

    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>OpenAI Realtime API Voice Agent</title>
    <style>
      :root {

const NR_TYPE = "near_field";
const INSTRUCTIONS = `
  Greet the user in English, and thank them for trying the new OpenAI Realtime API.
  Give them a brief summary based on the list below, and then ask if they have any questions.
  Answer questions using the information below. For questions outside this scope,
  - higher audio quality
  - improved handling of alphanumerics (eg, properly understanding credit card and phone numbers)
  - support for the OpenAI Prompts API
  - support for MCP-based tools
  - auto-truncation to reduce context size

// @ts-ignore
import { OpenAI } from "https://esm.town/v/std/openai?v=4";
// --- AI BEHAVIORAL GUIDELINES ---
  if (req.method === "POST" && action === "getProblem") {
    try {
      const openai = new OpenAI();
      const body = await req.json();
      const level = typeof body.level === "number" ? body.level : 1;
      ];
      const completion = await openai.chat.completions.create({
        model: "gpt-4o",
        messages: messages,
      const content = completion.choices[0].message.content;
      if (!content) {
        throw new Error("OpenAI returned an empty response.");
      }

import { z } from "npm:zod@3.23.8";
// @ts-ignore
import { OpenAI } from "https://esm.town/v/std/openai?v=4";
// --- Input and Output Schema Definitions ---
});
// Defines the expected JSON structure from the OpenAI API.
// This allows us to validate the AI's output before using it.
const AIResponseSchema = z.object({
// --- Service Initialization ---
const app = new Hono();
const openai = new OpenAI();
// --- API Endpoints ---
  try {
    // 2. Request structured data from the OpenAI API.
    const completion = await openai.chat.completions.create({
      model: "gpt-4o",
      messages: [

Note: When changing a SQLite table's schema, change the table's name (e.g., add _2 or _3) to create a fresh table.
### OpenAI
```ts
import { OpenAI } from "https://esm.town/v/std/openai";
const openai = new OpenAI();
const completion = await openai.chat.completions.create({
  messages: [
    { role: "user", content: "Say hello in a creative way" },