# Nova AI Text-to-Speech (TTS)

> Nova AI Text-to-Speech (TTS) is a paid API for AI agents from nova.orbonomy.xyz, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Converts input text to synthesized speech audio, returning binary audio data, paid per-call via USDC on Base.

## Facts

- Endpoint: POST https://nova.orbonomy.xyz/api/tts
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nova-ai-text-to-speech-tts-8314c040
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_02ZXjFdDz1V7ORvDO0zSs

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability nova-ai-text-to-speech-tts-8314c040 -d '<json body>'
```

Example prompt: Can you read this paragraph aloud for me: 'Welcome to our platform. We're glad you're here.' — use a friendly female voice if available.

## When to prefer this

Choose this endpoint when you need pay-per-call text-to-speech with no subscription, billed in USDC on Base via the x402 protocol, and want AI-synthesized speech quickly without managing API keys or monthly plans.

## Known failure modes

- Missing 'text' field returns 400 bad request
- Text too long may exceed processing limits and return 413 or timeout
- Invalid voice name may fall back to default voice or return 400
- Payment failure (insufficient USDC balance or x402 auth failure) returns 402
- Server-side model errors return 500

## How this service works

Pay-per-call AI inference. Chat, reason, translate, analyze, generate. USDC on Base.

## Output

A binary audio stream (e.g. MP3 or WAV) containing synthesized speech corresponding to the input text, ready to be played back or saved as an audio file.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to convert to speech"
  },
  "voice": {
   "type": "string",
   "description": "Voice name (optional)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "string",
 "format": "binary"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nova-ai-text-to-speech-tts-8314c040/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nova.orbonomy.xyz](https://www.zero.xyz/host/nova.orbonomy.xyz/llms.txt)