# AgentServices Text-to-Speech

> AgentServices Text-to-Speech is a paid API for AI agents from agentservices.to, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Converts text into spoken audio using selectable voice and TTS model, paid via x402 micropayments

## Facts

- Endpoint: POST https://agentservices.to/v1/audio/speech
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentservices-text-to-speech-e106feaa
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1Di5X0gC3UX91vAxga3RP

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 agentservices-text-to-speech-e106feaa -d '<json body>'
```

Example prompt: Read this aloud using the nova voice: 'Welcome to our weekly market update. Today we cover Bitcoin, Ethereum, and DeFi trends.'

## When to prefer this

Choose this endpoint when your agent needs pay-per-call TTS without managing API keys or subscriptions — ideal for autonomous agents that need on-demand voice generation billed via x402 USDC micropayments on Base. Prefer it over direct OpenAI TTS when operating in a wallet-native, agentic micropayment context with no pre-registered credentials.

## Known failure modes

- Empty or missing 'text' field returns a 400 validation error
- Invalid voice name (not one of alloy, echo, fable, onyx, nova, shimmer) may return an error or fall back to default
- Text too long may exceed model token limits and return a truncation or limit error
- Insufficient USDC balance or x402 payment failure results in 402 Payment Required
- Invalid model identifier may return a model-not-found error

## How this service works

Paid data APIs for AI agents. Crypto market data, DeFi yields, IP geolocation, dispute resolution, marketing intelligence. Powered by x402 micropayments on Base.

## Output

Returns a binary audio file (likely MP3 or WAV) containing the synthesized speech of the provided text, rendered in the selected voice style using the specified TTS model.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "text"
 ],
 "properties": {
  "text": {
   "type": "string",
   "description": "Text to convert to speech"
  },
  "model": {
   "type": "string",
   "description": "TTS model"
  },
  "voice": {
   "type": "string",
   "description": "Voice: alloy, echo, fable, onyx, nova, shimmer"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentservices-text-to-speech-e106feaa/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentservices.to](https://www.zero.xyz/host/agentservices.to/llms.txt)