Structured responses

curl https://api.tessen.ai/v1/chat/completions \  -H "Authorization: Bearer $TESSEN_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "model": "z1",    "max_tokens": 256,    "messages": [{"role": "user", "content": "Return only a JSON object with the keys \"name\" (string) and \"age\" (integer) for this person: Ada Lovelace, 36 years old."}]  }'

import jsonimport osimport reimport requests PROMPT = 'Return only a JSON object with the keys "name" (string) and "age" (integer) for this person: Ada Lovelace, 36 years old.' def extract(text):    match = re.search(r"\{.*\}", text, re.S)    data = json.loads(match.group(0)) if match else None    if not isinstance(data, dict) or not isinstance(data.get("name"), str) or not isinstance(data.get("age"), int):        raise ValueError(f"Not the expected JSON: {text!r}")    return data for attempt in range(3):  # the API does not enforce a schema, so validate and retry    response = requests.post(        "https://api.tessen.ai/v1/chat/completions",        headers={"Authorization": f"Bearer {os.environ['TESSEN_API_KEY']}"},        json={"model": "z1", "max_tokens": 256, "messages": [{"role": "user", "content": PROMPT}]},        timeout=120,    )    response.raise_for_status()    try:        print(extract(response.json()["choices"][0]["message"]["content"]))        break    except ValueError as error:        print("retrying:", error)

const prompt = 'Return only a JSON object with the keys "name" (string) and "age" (integer) for this person: Ada Lovelace, 36 years old.'; function extract(text) {  const match = text.match(/\{[\s\S]*\}/);  const data = match ? JSON.parse(match[0]) : null;  if (!data || typeof data.name !== "string" || !Number.isInteger(data.age)) {    throw new Error(`Not the expected JSON: ${text}`);  }  return data;} for (let attempt = 0; attempt < 3; attempt++) { // the API does not enforce a schema, so validate and retry  const response = await fetch("https://api.tessen.ai/v1/chat/completions", {    method: "POST",    headers: { Authorization: `Bearer ${process.env.TESSEN_API_KEY}`, "Content-Type": "application/json" },    body: JSON.stringify({ model: "z1", max_tokens: 256, messages: [{ role: "user", content: prompt }] }),  });  if (!response.ok) throw new Error(`HTTP ${response.status}: ${await response.text()}`);  try {    console.log(extract((await response.json()).choices[0].message.content));    break;  } catch (error) {    console.log("retrying:", error.message);  }}