# x402.dellbot.win TTS Nano (Kokoro)

> x402.dellbot.win TTS Nano (Kokoro) is a paid API for AI agents from x402.dellbot.win, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Converts text (up to 1000 characters) to MP3 audio using the Kokoro open-weights TTS model, returning raw audio/mpeg binary.

## Facts

- Endpoint: POST https://x402.dellbot.win/tts-nano
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-dellbot-win-3a5937d8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DNAr5VFsa2pPFVNmLkFga

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 x402-dellbot-win-3a5937d8 -d '<json body>'
```

Example prompt: Can you read this text aloud and give me an MP3: 'Welcome to the future of audio. This is a test of the Kokoro voice system.' Use the default voice.

## When to prefer this

Choose this endpoint when you need the cheapest available TTS on the x402 Bazaar, want fast Kokoro open-weights voice synthesis, need raw MP3 binary output with no JSON decoding step, and your input text is under 1000 characters.

## Known failure modes

- Input text exceeds 1000 characters → 400 or truncation error
- Empty text body → 400 bad request
- Unsupported voice name → error or fallback to default
- Payment not included or insufficient → 402 Payment Required
- Network timeout on audio generation → 504 or connection error

## How this service works

Cheapest TTS on x402 Bazaar. POST text, get back MP3 audio. tts-kokoro (open-weights, fast, multi-voice). 1000-char input cap. Returns audio/mpeg binary directly — no JSON wrapper to decode.

## Output

A raw binary MP3 audio file (audio/mpeg) with no JSON wrapper — the response body is directly playable audio of the synthesized speech.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "input"
     ],
     "properties": {
      "input": {
       "type": "string",
       "maxLength": 1000,
       "description": "Text to synthesize (max 1000 chars)"
      },
      "model": {
       "enum": [
        "tts-kokoro"
       ],
       "type": "string"
      },
      "speed": {
       "type": "number"
      },
      "voice": {
       "type": "string",
       "description": "Model-specific voice id"
      },
      "response_format": {
       "enum": [
        "mp3",
        "wav",
        "opus",
        "aac",
        "flac"
       ],
       "type": "string"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "string",
     "format": "binary",
     "contentMediaType": "audio/mpeg"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-dellbot-win-3a5937d8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.dellbot.win](https://www.zero.xyz/host/x402.dellbot.win/llms.txt)