# AgentRXI Premium Text-to-Speech (Deepgram Aura-2)

> AgentRXI Premium Text-to-Speech (Deepgram Aura-2) 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 text to natural-sounding speech using Deepgram Aura-2 voices, returning audio as MP3 or base64 JSON in English or Spanish.

## Facts

- Endpoint: GET https://agentrxi.com/v1/speak/pro?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-premium-text-to-speech-deepgram-aura-2-e68042f2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E58TdCVg_pAzrGJta13Bp

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-premium-text-to-speech-deepgram-aura-2-e68042f2
```

Example prompt: Read this aloud using the 'athena' voice in English and give me an MP3: 'Welcome to our quarterly earnings call. Today we will discuss our strong performance across all product lines.'

## When to prefer this

Choose this endpoint when you need high-quality English or Spanish speech synthesis powered by Deepgram Aura-2 with a broad selection of 40+ named voices, and want the result as a direct MP3 or base64 JSON — especially when you need an optional 7-day shareable link. Ideal for agents that need low-latency, pay-per-call TTS without managing API keys or subscriptions.

## Known failure modes

- Text exceeds 5,000 character limit — request rejected
- Invalid voice name — falls back to default or returns error
- Unsupported language code — only 'en' and 'es' are valid
- Payment below $0.005 minimum — transaction rejected
- Invalid format parameter — only 'mp3' and 'json' accepted

## How this service works

Premium natural speech with Deepgram Aura-2: 40 English voices (luna, orion, athena, zeus...) and Spanish, returned as MP3 (or base64 JSON). $0.002 plus $0.07 per 1,000 characters, minimum $0.005. Add store=true (+$0.001) to get a 7-day share link instead of the data inline.

## Output

Returns either a binary MP3 audio file or a JSON object containing base64-encoded audio data. If the store option is enabled, also returns a 7-day shareable link to the generated audio file.

## 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": {
      "text": {
       "type": "string",
       "description": "Up to 5,000 characters"
      },
      "store": {
       "type": "boolean",
       "description": "Return a 7-day share link (+$0.001)"
      },
      "voice": {
       "type": "string",
       "description": "e.g. luna, orion, athena"
      },
      "format": {
       "type": "string",
       "description": "mp3 (default) or json"
      },
      "language": {
       "type": "string",
       "description": "en (default) or es"
      }
     }
    }
   },
   "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-premium-text-to-speech-deepgram-aura-2-e68042f2/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)