# AgentRXI Text-to-Speech (WAV)

> AgentRXI Text-to-Speech (WAV) is a paid API for AI agents from agentrxi.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-15).

Converts up to 2000 characters of text into a natural-sounding WAV audio file in one of six supported languages.

## Facts

- Endpoint: GET https://agentrxi.com/v1/speak?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentrxi-text-to-speech-wav-70dd4a6a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_RTY4YmXDjxvsdu07ke9d4

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 agentrxi-text-to-speech-wav-70dd4a6a
```

Example prompt: Can you read this message aloud in Spanish and give me the WAV file: 'Bienvenido a nuestra tienda, estamos felices de ayudarle hoy'?

## When to prefer this

Choose this endpoint when you need a simple, low-cost WAV audio file from text with no complex API setup — just a text string and an optional language code. It is ideal for agents that need quick one-off voice synthesis in English, Spanish, French, Chinese, Japanese, or Korean at $0.005 per call. Prefer the sibling OpenAI-compatible TTS endpoint if you need voice selection or OpenAI SDK compatibility.

## Known failure modes

- Text exceeds 2000 character limit — request rejected or truncated
- Unsupported language code provided — defaults to English or returns error
- Empty text field — likely returns an error or silent audio
- Payment not processed (x402) — 402 Payment Required response blocks the call
- Network timeout if synthesis takes too long for lengthy input

## How this service works

Text to speech. Send up to 2000 characters and a language (en, es, fr, zh, jp, kr); get a natural-sounding WAV recording back. Also callable as GET with the same fields as query parameters.

## Output

A binary WAV audio file containing a natural-sounding voice rendering of the submitted text in the requested language. The response is the raw audio data, ready for playback or download.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "text"
     ],
     "properties": {
      "lang": {
       "type": "string",
       "description": "en | es | fr | zh | jp | kr (default en)"
      },
      "text": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentrxi-text-to-speech-wav-70dd4a6a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentrxi.com](https://www.zero.xyz/host/agentrxi.com/llms.txt)