Roundhouse

voice.forgemesh.io

ForgeMesh Voice gives AI agents, creators, videos, books, and apps an instant pay-per-call voice API with persona voices, 31 languages, x402 payments, and OpenAI-shaped speech requests.

MediaLiveeip155:8453Exactvia cdp
https://voice.forgemesh.io/v1/tts/custom-long
Calls · 30d
4→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far.
$1.22
Verified settled volume
420 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
4
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-09-21 08:37Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x962794FB8aD92941fAf1ab446b9e30637B86F331

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x962794FB8aD92941fAf1ab446b9e30637B86F331",
      "scheme": "exact",
      "network": "base",
      "mimeType": "audio/wav",
      "resource": "https://voice.forgemesh.io/v1/tts/custom-long",
      "description": "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.",
      "maxAmountRequired": "10000",
      "maxTimeoutSeconds": 1800
    }
  ],
  "extensions": {
    "sample": {
      "tier": "custom",
      "type": "generative",
      "voice": "M1",
      "format": "audio/wav",
      "notice": "Free 8-second sample clip from the voice library. Pay to generate custom speech from your text in any of 20 voices and 31 languages.",
      "sample": true,
      "product": "tts_custom",
      "withheld": [
        "custom text synthesis",
        "voice selection",
        "language selection",
        "speed/quality controls"
      ],
      "sample_url": "https://voice.forgemesh.io/samples/en/M1.wav",
      "sample_duration_seconds": 8
    }
  },
  "x402Version": 1
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.01USDC≈ $0.01 USD
on Base · exact scheme

Pay 0.01 USDC on Base to 0x9627…6F331. The signed payment is good for 30 minutes.

Paid to
0x9627…6F331
USD Coin contract
0x8335…02913
Payment window
30 minutes
As published
10000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x962794FB8aD92941fAf1ab446b9e30637B86F331",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 1800
  }
]

Extensions

{
  "tags": [
    "text-to-speech",
    "tts",
    "persona-voices",
    "long-form",
    "narration",
    "audio",
    "wav"
  ],
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "lang": "en",
          "text": "Hello world",
          "voice": "M1"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      },
      "output": {
        "type": "json",
        "example": {
          "description": "44.1kHz 16-bit mono WAV speech audio returned inline",
          "content_type": "audio/wav"
        }
      }
    },
    "schema": {
      "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": [
                "text"
              ],
              "properties": {
                "lang": {
                  "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",
                  "description": "Language code; 31 languages supported"
                },
                "text": {
                  "type": "string",
                  "maxLength": 2000,
                  "minLength": 1,
                  "description": "Text to synthesize into speech, max 2000 characters. Use non-long routes for 1-500 chars and -long routes for 501-2000 chars."
                },
                "speed": {
                  "type": "number",
                  "maximum": 2,
                  "minimum": 0.7,
                  "description": "Pro/Custom expressive speed control, 0.7-2.0. Presets: slow 0.7, normal 1.0, fast 1.3, rapid 1.6"
                },
                "steps": {
                  "type": "integer",
                  "maximum": 100,
                  "minimum": 1,
                  "description": "Pro/Custom quality control, 1-100. Presets: draft 4, standard 8, high 16, ultra 24"
                },
                "voice": {
                  "enum": [
                    "M1",
                    "M2",
                    "M3",
                    "M4",
                    "M5",
                    "F1",
                    "F2",
                    "F3",
                    "F4",
                    "F5",
                    "Storyteller",
                    "Narrator",
                    "Announcer",
                    "Assistant",
                    "Urgent",
                    "Sage",
                    "Spark",
                    "Anchor",
                    "Velvet",
                    "Echo"
                  ],
                  "type": "string",
                  "description": "Voice name. Standard voices M1-M5/F1-F5; persona voices require Custom tier."
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "properties": {
                "audio": {
                  "type": "string",
                  "description": "Inline WAV bytes in the HTTP response body"
                },
                "content_type": {
                  "type": "string",
                  "const": "audio/wav"
                }
              }
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-09-21 08:37Z
Last indexed by Roundhouse
2026-09-24 08:10Z
Last enriched (probe, favicon, geo)
2026-09-14 03:15Z
x402 version
2
Max timeout
1800s
Liveness probe
HTTP 402
Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 30 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service voice.forgemesh.io and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=voice.forgemesh.io'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://voice.forgemesh.io/v1/tts/custom-long, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.