Api Endpoint

Text-to-speech (Aura-2 / MeloTTS)

Turns text into natural speech in English, Spanish, French, Chinese, Japanese or Korean in one or two seconds: Deepgram Aura-2 for English and Spanish, MeloTTS for the rest. Returns a hosted audio URL valid for 24 hours (MP3 for English and Spanish, WAV otherwise) plus its size; add inline=true to also get the base64. Up to 2000 characters per call. You are only charged if the audio is delivered. No API key, no account.

Open interactive test console

Offering

Provider: flat-rate-llm.kikoribera03.workers.dev
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Creative
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://flat-rate-llm.kikoribera03.workers.dev/v1/ai/speech
MIME type: Not provided
First seen: 2026-10-16T01:50:14.534Z
Last seen: 2026-11-04T02:35:47.973Z
Tags: text to speech, tts, speech synthesis, voice, audio generation, read aloud

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1: 0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2: 0.01 USDC
Atomic price: 10000 · Network: eip155:137 · Asset: USDC · Scheme: exact
Payment option 3: 0.01 USDC
Atomic price: 10000 · Network: eip155:42161 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xc210Ea7D5692a6401ADf25BbCB7aCDe9cDB7e9Ff"
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "10000",
    "payTo": "0xc210Ea7D5692a6401ADf25BbCB7aCDe9cDB7e9Ff"
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "10000",
    "payTo": "0xc210Ea7D5692a6401ADf25BbCB7aCDe9cDB7e9Ff"
  }
]

Observed health

Status: Healthy
Latest latency: 525 ms
Average latency: 318 ms
HTTP status: 402
Last checked: 2026-11-04T02:35:47.968Z
Reachability: 100% over 13 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "text": {
          "type": "string",
          "description": "What to say, up to 2000 characters."
        },
        "lang": {
          "type": "string",
          "description": "en, es, fr, zh, ja or ko. Default en."
        },
        "inline": {
          "type": "boolean",
          "description": "Also return the WAV as base64. Default false."
        }
      },
      "required": [
        "text"
      ]
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "inline": {
              "description": "Also return the WAV as base64. Default false.",
              "type": "boolean"
            },
            "lang": {
              "description": "en, es, fr, zh, ja or ko. Default en.",
              "type": "string"
            },
            "text": {
              "description": "What to say, up to 2000 characters.",
              "type": "string"
            }
          },
          "required": [
            "text"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}