Identify any track
from audio

# Send the raw audio file — we fingerprint it for you
curl -X POST https://api.sonovault.now/v1/tracks/identify \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/octet-stream" \
  --data-binary @song.mp3

import { readFile } from "node:fs/promises";

const audio = await readFile("song.mp3");

const res = await fetch("https://api.sonovault.now/v1/tracks/identify", {
  method: "POST",
  headers: {
    "x-api-key": process.env.SONOVAULT_API_KEY,   // keep your key server-side
    "Content-Type": "application/octet-stream",
  },
  body: audio,
});

const { matched, results } = await res.json();
if (matched) {
  const track = results[0];                        // results are plain tracks
  console.log(`${track.artists[0].name} — ${track.title} (${track.isrc})`);
}

<input type="file" accept="audio/*" id="audio" />

<script type="module">
  document.getElementById("audio").addEventListener("change", async (e) => {
    const file = e.target.files[0];
    if (!file) return;

    // POST the raw bytes to YOUR backend — never put your API key in the
    // browser. Your backend forwards it to SonoVault (see the proxy below).
    const res = await fetch("/api/identify", {
      method: "POST",
      headers: { "Content-Type": "application/octet-stream" },
      body: file,
    });

    const { matched, results } = await res.json();
    document.title = matched
      ? `${results[0].artists[0].name} — ${results[0].title}`
      : "No match";
  });
</script>

// Your backend route — adds the secret key and forwards the audio.
export async function POST(req) {
  const audio = await req.arrayBuffer();

  const res = await fetch("https://api.sonovault.now/v1/tracks/identify", {
    method: "POST",
    headers: {
      "x-api-key": process.env.SONOVAULT_API_KEY,
      "Content-Type": "application/octet-stream",
    },
    body: audio,
  });

  return new Response(res.body, { headers: { "Content-Type": "application/json" } });
}