import os, requests

def embed_text(text: str, api_base: str, api_key: str|None, model: str) -> list[float]:
    url = f"{api_base.rstrip('/')}/v1/embeddings"
    headers = {"Content-Type":"application/json"}
    if api_key:
        headers["Authorization"] = f"Bearer {api_key}"
    r = requests.post(url, headers=headers, json={"model": model, "input": text}, timeout=60)
    r.raise_for_status()
    return r.json()["data"][0]["embedding"]