Api Endpoint

voice.forgemesh.io

Batch text-to-speech: synthesize up to 20 separate text items in a single call, standard voices only, up to 500 total characters, returns JSON with base64 WAV audio plus duration and sample rate per item. Use it to: voice a list of short UI strings at once, generate audio for multiple notification templates, batch-produce voice lines for a menu or form, synthesize several short replies in one request. USDC on Base via x402.

Open interactive test console

Offering

Provider
voice.forgemesh.io
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Creative
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://voice.forgemesh.io/v1/tts/batch
MIME type
application/json
First seen
2026-10-16T01:50:14.534Z
Last seen
Tags
None supplied

Payment pricing

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

Payment option 1
0.005 USDC
Atomic price: 5000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "payTo": "0x962794FB8aD92941fAf1ab446b9e30637B86F331"
  }
]

Observed health

Status
Healthy
Latest latency
867 ms
Average latency
343 ms
HTTP status
200
Last checked
Reachability
100% over 14 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": [
        "POST"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "type": "object",
      "properties": {
        "items": {
          "type": "array",
          "minItems": 1,
          "maxItems": 20,
          "description": "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.",
          "items": {
            "type": "object",
            "properties": {
              "text": {
                "type": "string",
                "minLength": 1,
                "maxLength": 2000,
                "description": "Text for this batch item"
              },
              "voice": {
                "type": "string",
                "enum": [
                  "M1",
                  "M2",
                  "M3",
                  "M4",
                  "M5",
                  "F1",
                  "F2",
                  "F3",
                  "F4",
                  "F5"
                ],
                "description": "Standard voice: M1-M5 or F1-F5"
              },
              "lang": {
                "type": "string",
                "enum": [
                  "en",
                  "ko",
                  "ja",
                  "ar",
                  "bg",
                  "cs",
                  "da",
                  "de",
                  "el",
                  "es",
                  "et",
                  "fi",
                  "fr",
                  "hi",
                  "hr",
                  "hu",
                  "id",
                  "it",
                  "lt",
                  "lv",
                  "nl",
                  "pl",
                  "pt",
                  "ro",
                  "ru",
                  "sk",
                  "sl",
                  "sv",
                  "tr",
                  "uk",
                  "vi"
                ],
                "description": "Language code; 31 languages supported"
              }
            },
            "required": [
              "text"
            ],
            "additionalProperties": false
          }
        },
        "defaults": {
          "type": "object",
          "description": "Default standard voice and language for all items",
          "properties": {
            "voice": {
              "type": "string",
              "enum": [
                "M1",
                "M2",
                "M3",
                "M4",
                "M5",
                "F1",
                "F2",
                "F3",
                "F4",
                "F5"
              ],
              "description": "Standard voice: M1-M5 or F1-F5"
            },
            "lang": {
              "type": "string",
              "enum": [
                "en",
                "ko",
                "ja",
                "ar",
                "bg",
                "cs",
                "da",
                "de",
                "el",
                "es",
                "et",
                "fi",
                "fr",
                "hi",
                "hr",
                "hu",
                "id",
                "it",
                "lt",
                "lv",
                "nl",
                "pl",
                "pt",
                "ro",
                "ru",
                "sk",
                "sl",
                "sv",
                "tr",
                "uk",
                "vi"
              ],
              "description": "Language code; 31 languages supported"
            }
          },
          "additionalProperties": false
        }
      },
      "required": [
        "items"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "properties": {
        "items": {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "audio_base64": {
                "type": "string"
              },
              "duration_s": {
                "type": "number"
              },
              "format": {
                "type": "string"
              },
              "sample_rate": {
                "type": "integer"
              }
            }
          }
        }
      }
    }
  },
  "required": [
    "type"
  ]
}