Expressive text-to-speech in any of 20 voices, standard M1-M5/F1-F5 plus persona
Expressive text-to-speech in any of 20 voices, standard M1-M5/F1-F5 plus personas like Storyteller, Narrator, Announcer, Urgent, Velvet, with speed and quality control, for 501-2000 characters, WAV output. Use it to: narrate a longer story or audiobook chapter, voice an extended character monologue, produce a branded multi-sentence announcement, script a persona-driven podcast segment. USDC on Base via x402.
Answeringour last check, 2026-09-24
1 of 1checks answered this week
243 msmedian answer time
$0.01listed price per call
$0.01price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://voice.forgemesh.io/v1/tts/custom-long
| Category | Image and media |
|---|---|
| Provider host | voice.forgemesh.io |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 4 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.01 | 243 ms |
Example input (from the provider)
{
"body": {
"lang": "en",
"text": "Hello world",
"voice": "M1"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"lang": {
"description": "Language code; 31 languages supported",
"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"
],
"type": "string"
},
"speed": {
"description": "Pro/Custom expressive speed control, 0.7-2.0. Presets: slow 0.7, normal 1.0, fast 1.3, rapid 1.6",
"maximum": 2,
"minimum": 0.7,
"type": "number"
},
"steps": {
"description": "Pro/Custom quality control, 1-100. Presets: draft 4, standard 8, high 16, ultra 24",
"maximum": 100,
"minimum": 1,
"type": "integer"
},
"text": {
"description": "Text to synthesize into speech, max 2000 characters. Use non-long routes for 1-500 chars and -long routes for 501-2000 chars.",
"maxLength": 2000,
"minLength": 1,
"type": "string"
},
"voice": {
"description": "Voice name. Standard voices M1-M5/F1-F5; persona voices require Custom tier.",
"enum": [
"M1",
"M2",
"M3",
"M4",
"M5",
"F1",
"F2",
"F3",
"F4",
"F5",
"Storyteller",
"Narrator",
"Announcer",
"Assistant",
"Urgent",
"Sage",
"Spark",
"Anchor",
"Velvet",
"Echo"
],
"type": "string"
}
},
"required": [
"text"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"audio": {
"description": "Inline WAV bytes in the HTTP response body",
"type": "string"
},
"content_type": {
"const": "audio/wav",
"type": "string"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}