Make AI music

Type a vibe, get a track. Your agent turns a one-line brief into a rich music prompt with Claude, then pays Stable Audio 2.5 to render the actual audio — a real, commercial-use .wav you can play and sell. ~$0.42, no API keys, no subscriptions.

This recipe is the creation half of the Audric Store demo “Make me a lo-fi beat called Midnight Rain and sell it for $5.” The store half — persisting to Walrus, capping supply, and the 92%-to-creator USDC sale — lands with Audric Store.Why pay for a model when a capable client could DIY? An agent with a code sandbox (e.g. Claude Desktop) can synthesize a basic beat with numpy/ffmpeg for free — and will, if you let it. But that’s a hand-built waveform, not generative music. When the point is a real, sellable track (“AI made the music”), you want a generative model — that’s what the paid call buys here. For clients without a code sandbox (a browser/zkLogin app like Audric), the model endpoint is the only path. Phrase the prompt to ask for model generation when quality matters.

The prompt

Use t2 services. Use Stable Audio to generate a mellow lo-fi beat called "Midnight Rain" —
rainy-night vibe, ~30 seconds. Give me the audio to play.

What runs

POST /anthropic/v1/messages — Claude turns the brief into a vivid music prompt (~$0.02)
POST /fal/fal-ai/stable-audio-25/text-to-audio — Stable Audio 2.5 renders the track (~$0.40)

Run it

Claude Desktop (MCP)

npm install -g @t2000/cli && t2 init && t2 fund && t2 mcp install

Paste the prompt. Naming Stable Audio explicitly steers the agent to the model instead of synthesizing a waveform itself.

SDK

import { T2000 } from '@t2000/sdk';
import { writeFileSync } from 'fs';

const agent = await T2000.create();
const brief = 'A mellow lo-fi hip-hop beat called "Midnight Rain", rainy-night mood, ~75 BPM';

// 1. Claude expands the brief into a richer music prompt.
const promptGen = await agent.pay({
  url: 'https://mpp.t2000.ai/anthropic/v1/messages',
  method: 'POST',
  headers: { 'anthropic-version': '2023-06-01' },
  body: JSON.stringify({
    model: 'claude-sonnet-4-5',
    max_tokens: 150,
    messages: [{
      role: 'user',
      content: `Write a single vivid text-to-music prompt (instruments, tempo, mood) for: ${brief}. Output ONLY the prompt.`,
    }],
  }),
});
const musicPrompt = (promptGen.body as { content: { text: string }[] }).content[0].text.trim();

// 2. Render with Stable Audio 2.5 — returns a hosted audio URL.
const track = await agent.pay({
  url: 'https://mpp.t2000.ai/fal/fal-ai/stable-audio-25/text-to-audio',
  method: 'POST',
  body: JSON.stringify({ prompt: musicPrompt, seconds_total: 30 }),
});

const { audio } = track.body as { audio: string };
const wav = await fetch(audio).then((res) => res.arrayBuffer());
writeFileSync('./midnight-rain.wav', Buffer.from(wav));
console.log('Track:', audio);

Expected output

2 calls · ~$0.42 · ~10s · 0 taps
./midnight-rain.wav  (commercial-use, hosted)

Extend it

Need a cheaper take? MusicGen via Replicate (/replicate/v1/predictions, $0.04) runs the open MusicGen model — pass its version + { prompt, duration } and poll /replicate/v1/predictions/status for long renders
Chain fal.ai Flux (/fal/fal-ai/flux/dev) for matching cover art and ElevenLabs (/elevenlabs/v1/text-to-speech/:voiceId) for a spoken intro
Persist the track + cover to Walrus and mint it for sale — that’s the upcoming Audric Store flow (creation → storage → capped USDC sale, 92% to the creator)

​The prompt

​What runs

​Run it

​Claude Desktop (MCP)

​SDK

​Expected output

​Extend it