ForgeMesh Batch Text-to-Speech (Standard Voices)

x402

ForgeMesh Batch Text-to-Speech (Standard Voices) is a paid API for AI agents from tts.forgemesh.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Converts up to 20 text items into WAV audio in batch using standard M/F voices across 31 languages, paid via x402 microtransaction.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

Paid text-to-speech via x402. WAV audio in 31 languages, OpenAI-compatible, no API keys.

Output

Returns a JSON array of audio items, each containing a base64-encoded WAV file, the audio duration in seconds, and the sample rate (44100 Hz). One audio item is returned per input text item.

Example use cases

Multilingual product announcement audio

“Turn these product launch messages into audio: 'Introducing our new app!' in English with voice M3, 'Presentando nuestra nueva aplicación!' in Spanish with voice M3, and 'Présentation de notre nouvelle application!' in French with voice M3 — I need WAV files for each.”

Voiceover snippets for a language learning app

“Generate spoken audio for these vocabulary items: 'Good morning' in English with a female voice F1, 'Ohayou gozaimasu' in Japanese with voice F1, and 'Guten Morgen' in German with voice F1 — all as WAV audio please.”

Batch narration for a chatbot UI

“I need audio narrations for my chatbot responses — convert 'Your order has been placed.' in English with voice M2, 'Votre commande a été passée.' in French with voice M2, and 'Ihre Bestellung wurde aufgegeben.' in German with voice M2 to WAV audio.”

Technical details

Endpoint

POSThttps://tts.forgemesh.io/v1/tts/batch

When to prefer

Choose this endpoint when you need to synthesize multiple short text items (up to 500 total characters across all items, up to 20 items) into WAV audio in one call, especially when you need multilingual support across 31 languages or multiple voice types (M1–M5, F1–F5) without setting up API keys. Prefer over single-item TTS endpoints when batching is needed for efficiency. Use the sibling /v1/tts/batch-long endpoint when total character count is 501–2000.

Side effects

Total text across all items exceeds 500 characters — use /v1/tts/batch-long for 501–2000 chars
More than 20 items submitted — batch is capped at 20 items
Invalid language code not in the 31-language enum — returns validation error
Invalid voice ID outside M1–M5 / F1–F5 range — returns validation error
Payment not provided or insufficient via x402 — returns 402 Payment Required
Empty text string provided for an item — minLength:1 violation

Input

Schema · Request body

Field	Type	Description
items	array	Array of standard-voice text items. Total text across all items must be <= 2000 characters; use /v1/tts/batch for <=500 total chars and /v1/tts/batch-long for 501-2000 total chars.
defaults	object	Default standard voice and language for all items

Output

Schema · Response

{
  "type": "json",
  "example": {
    "items": [
      {
        "format": "wav",
        "duration_s": 1.5,
        "sample_rate": 44100,
        "audio_base64": "..."
      }
    ]
  }
}

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Example use cases

Multilingual product announcement audio

Voiceover snippets for a language learning app

Batch narration for a chatbot UI

Technical details

Endpoint

POSThttps://tts.forgemesh.io/v1/tts/batch

When to prefer

Side effects

Total text across all items exceeds 500 characters — use /v1/tts/batch-long for 501–2000 chars
More than 20 items submitted — batch is capped at 20 items
Invalid language code not in the 31-language enum — returns validation error
Invalid voice ID outside M1–M5 / F1–F5 range — returns validation error
Payment not provided or insufficient via x402 — returns 402 Payment Required
Empty text string provided for an item — minLength:1 violation

Input

Schema · Request body

Field	Type	Description
items	array	Array of standard-voice text items. Total text across all items must be <= 2000 characters; use /v1/tts/batch for <=500 total chars and /v1/tts/batch-long for 501-2000 total chars.
defaults	object	Default standard voice and language for all items

Output

Schema · Response

{
  "type": "json",
  "example": {
    "items": [
      {
        "format": "wav",
        "duration_s": 1.5,
        "sample_rate": 44100,
        "audio_base64": "..."
      }
    ]
  }
}