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ForgeMesh Voice

payment-readyonline

payment-ready until 2026-11-06

Give your agent a voice: x402 pay-per-call text-to-speech with 20 voices, 10 personas, 31 languages, speed/quality controls and batch audio.

Part of the ForgeMesh operator hub

Compare: all text-to-speech APIs

voice.forgemesh.io ↗

Call it x402 v2

x402 v2

Base URL
https://voice.forgemesh.io
Payment
x402 v2, header channel
$ curl -i 'https://voice.forgemesh.io/v1/tts/base'

An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.

Endpoints 5 paid routes on voice.forgemesh.io

GET/v1/tts/baseBase$0.001since 09-14
GET/v1/tts/base-longBase$0.003since 09-14
GET/v1/tts/customBase$0.005since 09-14
GET/v1/tts/proBase$0.003since 09-14
GET/v1/tts/pro-longBase$0.006since 09-14

Prices as captured in the 402 response: median $0.003 across the 5 endpoints.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
MethodPathDescriptionPriceNetworkAsset402 channelCaptured
GET/v1/tts/baseText-to-speech synthesis in 1 of 10 standard voices (5 male M1-M5, 5 female F1-F5) across 31 languages, up to 500 characters, returned as inline WAV audio. Use it to: give an agent a spoken reply, read an alert aloud, narrate a short UI prompt, add voice to a chatbot response, speak a confirmation message. Cheapest tier. USDC on Base via x402, no API key, no signup.$0.001BaseUSDCheadersince 09-14
GET/v1/tts/base-longText-to-speech synthesis in 1 of 10 standard voices (M1-M5 male, F1-F5 female) across 31 languages, for longer text from 501 up to 2000 characters, returned as inline WAV audio. Use it to: read a full paragraph aloud, narrate a multi-sentence agent summary, voice an email or article excerpt, turn a longer LLM response into spoken audio, generate audio for a script section. USDC on Base via x402, no API key.$0.003BaseUSDCheadersince 09-14
GET/v1/tts/customExpressive text-to-speech in any of 20 voices: 10 standard (M1-M5, F1-F5) plus 10 personas (Storyteller, Narrator, Announcer, Urgent, Velvet, Sage, Spark, Anchor, Echo, Assistant), with speed and quality control, up to 500 characters, WAV output. Use it to: voice a game character, narrate a branded assistant reply, add a dramatic announcer line, give a chatbot personality-driven audio. USDC on Base.$0.005BaseUSDCheadersince 09-14
GET/v1/tts/proText-to-speech with speed (0.7x-2.0x) and quality-step (1-100) control, 1 of 10 standard voices across 31 languages, up to 500 characters, returned as WAV audio. Use it to: speak an urgent alert faster, slow a reading for clarity, tune synthesis quality against latency, produce a paced voice cue for a UI, generate a rushed or calm-toned notification. USDC on Base via x402, no API key.$0.003BaseUSDCheadersince 09-14
GET/v1/tts/pro-longText-to-speech with speed (0.7x-2.0x) and quality-step (1-100) control, 1 of 10 standard voices across 31 languages, for 501-2000 characters, returned as WAV audio. Use it to: pace a longer narration like a podcast intro, read a multi-paragraph script at a chosen speed, produce a slow deliberate reading of instructions, voice an extended alert or briefing. USDC on Base via x402.$0.006BaseUSDCheadersince 09-14

Payment evidence

402 payload captured at . Check evidence JSON · Measurement methodology.

First of 5 payloads captured by the monitor.

185 lines, scroll inside

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x962794FB8aD92941fAf1ab446b9e30637B86F331",
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 1800
    }
  ],
  "resource": {
    "url": "https://voice.forgemesh.io/v1/tts/base",
    "mimeType": "audio/wav",
    "description": "Text-to-speech synthesis in 1 of 10 standard voices (5 male M1-M5, 5 female F1-F5) across 31 languages, up to 500 characters, returned as inline WAV audio. Use it to: give an agent a spoken reply, read an alert aloud, narrate a short UI prompt, add voice to a chatbot response, speak a confirmation message. Cheapest tier. USDC on Base via x402, no API key, no signup."
  },
  "extensions": {
    "tags": [
      "text-to-speech",
      "tts",
      "voice-generation",
      "speech-synthesis",
      "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."
                  },
                  "voice": {
                    "enum": [
                      "M1",
                      "M2",
                      "M3",
                      "M4",
                      "M5",
                      "F1",
                      "F2",
                      "F3",
                      "F4",
                      "F5"
                    ],
                    "type": "string",
                    "description": "Standard voice: M1-M5 or F1-F5"
                  }
                },
                "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"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}
Other captured 402 responses (4)

Captured payload 2 of 5

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x962794FB8aD92941fAf1ab446b9e30637B86F331",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 1800
    }
  ],
  "resource": {
    "url": "https://voice.forgemesh.io/v1/tts/pro",
    "mimeType": "audio/wav",
    "description": "Text-to-speech with speed (0.7x-2.0x) and quality-step (1-100) control, 1 of 10 standard voices across 31 languages, up to 500 characters, returned as WAV audio. Use it to: speak an urgent alert faster, slow a reading for clarity, tune synthesis quality against latency, produce a paced voice cue for a UI, generate a rushed or calm-toned notification. USDC on Base via x402, no API key."
  },
  "extensions": {
    "tags": [
      "text-to-speech",
      "tts",
      "speech-synthesis",
      "speed-control",
      "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"
                    ],
                    "type": "string",
                    "description": "Standard voice: M1-M5 or F1-F5"
                  }
                },
                "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"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 3 of 5

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x962794FB8aD92941fAf1ab446b9e30637B86F331",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 1800
    }
  ],
  "resource": {
    "url": "https://voice.forgemesh.io/v1/tts/custom",
    "mimeType": "audio/wav",
    "description": "Expressive text-to-speech in any of 20 voices: 10 standard (M1-M5, F1-F5) plus 10 personas (Storyteller, Narrator, Announcer, Urgent, Velvet, Sage, Spark, Anchor, Echo, Assistant), with speed and quality control, up to 500 characters, WAV output. Use it to: voice a game character, narrate a branded assistant reply, add a dramatic announcer line, give a chatbot personality-driven audio. USDC on Base."
  },
  "extensions": {
    "tags": [
      "text-to-speech",
      "tts",
      "persona-voices",
      "expressive",
      "voiceover",
      "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"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 4 of 5

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x962794FB8aD92941fAf1ab446b9e30637B86F331",
      "amount": "3000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 1800
    }
  ],
  "resource": {
    "url": "https://voice.forgemesh.io/v1/tts/base-long",
    "mimeType": "audio/wav",
    "description": "Text-to-speech synthesis in 1 of 10 standard voices (M1-M5 male, F1-F5 female) across 31 languages, for longer text from 501 up to 2000 characters, returned as inline WAV audio. Use it to: read a full paragraph aloud, narrate a multi-sentence agent summary, voice an email or article excerpt, turn a longer LLM response into spoken audio, generate audio for a script section. USDC on Base via x402, no API key."
  },
  "extensions": {
    "tags": [
      "text-to-speech",
      "tts",
      "long-form",
      "voice-generation",
      "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."
                  },
                  "voice": {
                    "enum": [
                      "M1",
                      "M2",
                      "M3",
                      "M4",
                      "M5",
                      "F1",
                      "F2",
                      "F3",
                      "F4",
                      "F5"
                    ],
                    "type": "string",
                    "description": "Standard voice: M1-M5 or F1-F5"
                  }
                },
                "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"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Captured payload 5 of 5

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x962794FB8aD92941fAf1ab446b9e30637B86F331",
      "amount": "6000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 1800
    }
  ],
  "resource": {
    "url": "https://voice.forgemesh.io/v1/tts/pro-long",
    "mimeType": "audio/wav",
    "description": "Text-to-speech with speed (0.7x-2.0x) and quality-step (1-100) control, 1 of 10 standard voices across 31 languages, for 501-2000 characters, returned as WAV audio. Use it to: pace a longer narration like a podcast intro, read a multi-paragraph script at a chosen speed, produce a slow deliberate reading of instructions, voice an extended alert or briefing. USDC on Base via x402."
  },
  "extensions": {
    "tags": [
      "text-to-speech",
      "tts",
      "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"
                    ],
                    "type": "string",
                    "description": "Standard voice: M1-M5 or F1-F5"
                  }
                },
                "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"
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

89/100 Solid

#19 of 213 in AI. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability
100% uptime 30d
Compliance
A 14/14 checks pass
Price
$0.001 to $0.006 p12 in AI
Risk
clean no risk flag
Traction
$0.44 30d 14 buyers, top buyer 51% (address, not entity)
14/14 compliance checks
  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

402 terms unchanged since 2026-09-14. Last up 2026-10-30.

── Site signals

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
How the score works

What the score read on this service: status online, 100% uptime 30d, 231ms response p95, x402 compliance 14 of 14, $0.001 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

It is a score inside AI, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 213 listings, this one among them: the same 213 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Settled via coinbase ($0.44, 139 tx). Traction is a conservative undercount; first settlement seen 2026-06-29.

All measured facts

What it does

Give your agent a voice: x402 pay-per-call text-to-speech with 20 voices, 10 personas, 31 languages, speed/quality controls and batch audio. From $0.001 per call, USDC on Base.

ForgeMesh Voice is a listed x402 AI API. Captured payment terms name Base. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.

Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.

Page rendered at . This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.

Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.

Observed daily coverage: 2026-10-01 to 2026-10-30 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Latest settlement in the assessment: . Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.

Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.

x402 List home · Services · AI

uptime · latest daily rollup
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
100%
response p95
231ms
avg response
194ms
total checks
3,008

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

price (min)
$0.001
price (max)
$0.006
category percentile (min)
p12 in AI
category percentile (max)
p16 in AI
endpoints / prices
5 / 4
model
tiered
stability
100%

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
-
registrar
-
hosting
custom
domain created
---

Identity facts, not a risk score.

assessment volume 30d
$0.44
exact assessment volume 30d (USD)
0.443
assessment recorded at (UTC)
2026-10-29T23:04:09.144Z
buyers 30d
14
settlements 30d
139
measured since
2026-06-29 (start of our harvest window)
last settlement
2026-10-27
top buyer share
51% of 30d volume (address, not entity)
top 3 buyers share
77% of 30d volume (addresses, not entities)
concentrated volume
no
trend 7d vs 30d
0.50x the 30d daily rate
networks
eip155:8453
volume all-time
$1.75
settlements all-time
610
median settlement 30d
$0.003
max settlement 30d
$0.01

Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.

member since
2026-09-14
Recent checks
Latest 18 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)StatusHTTPResponseEndpoints
Online402105ms5
Online40284ms5
Online40282ms5
Online40293ms5
Online40286ms5
Online40283ms5
Online40287ms5
Online40298ms5
Online40286ms5
Online40279ms5
Online402103ms5
Online402112ms5
Online402122ms5
Online40286ms5
Online40292ms5
Online40278ms5
Online40287ms5
Online402101ms5

Changes0 in 30d

No changes recorded in the last 30 days.

all changes

Over time

On-chain volume daily snapshots, USD 30d: $0.44, peak $0.09 on 10-08
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime 100% on all 29 completed days
Volume 30d
$0.44
Uptime
100% on all 29 completed days
Daily on-chain settlement volume in US dollars, 2026-10-01 to 2026-10-30; highest day $0.09 on 10-08; 1 day has no data in the payload; distinct buyers per day
More charts
Response time daily average, ms min 86ms, avg 180ms, max 310ms

10-01 to 10-30* UTC

Scores over time

x402 compliance low 14/14, high 14/14

10-01 to 10-30* UTC

Price percentile in AI own low to high; exact values below

10-01 to 10-30* UTC

Site signals present (of 6) own low to high; exact values below

10-01 to 10-30* UTC

Scores: one day per column, 10-01 to 10-30*, on the columns of Response time. Uptime held 100% every day in this window, including any partial day. Daily readings remain in the Uptime strip and Values. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/forgemesh-voice/price, /scores, /volume and /buyers.

Values

* today so far, partial (UTC).

The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.

Daily snapshot total, 30d: $0.37, peak $0.09 on 10-08. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.

Daily address snapshots: 2026-10-01 to 2026-10-30 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here. † marks a recorded $0.00 with settlements.

Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.

Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-10-01 to 2026-10-30: address settlement volume in USD, distinct buyer and settlement counts, uptime percent, average response milliseconds, compliance passed/total, price percentile 0-100, site signals out of 6; UTC dates
DayVolumeBuyersSettlementsUptimeResponseCompliancePrice percentileSite signals
2026-10-01$0.00 recorded†11100%309.86ms14/14p114/6
2026-10-02$0.00 recorded†11100%258.00ms14/14p114/6
2026-10-03$0.0123100%289.26ms14/14p114/6
2026-10-04$0.0326100%198.59ms14/14p114/6
2026-10-05$0.04111100%224.80ms14/14p124/6
2026-10-06$0.00 recorded†22100%245.89ms14/14p124/6
2026-10-07$0.0228100%213.93ms14/14p124/6
2026-10-08$0.09427100%258.72ms14/14p124/6
2026-10-09$0.0122100%209.88ms14/14p124/6
2026-10-10$0.0125100%216.01ms14/14p124/6
2026-10-11$0.0122100%207.61ms14/14p124/6
2026-10-12$0.04111100%179.98ms14/14p124/6
2026-10-13$0.0136100%172.53ms14/14p124/6
2026-10-14$0.00 recorded†11100%180.41ms14/14p134/6
2026-10-15$0.00 recorded†11100%207.78ms14/14p134/6
2026-10-16$0.00 recorded†11100%197.70ms14/14p124/6
2026-10-17$0.0122100%160.25ms14/14p134/6
2026-10-18$0.00 recorded†33100%111.82ms14/14p134/6
2026-10-19$0.04111100%107.72ms14/14p134/6
2026-10-20$0.00 recorded†11100%157.74ms14/14p134/6
2026-10-21$0.00 recorded†11100%187.17ms14/14p134/6
2026-10-22$0.00 recorded†22100%141.88ms14/14p134/6
2026-10-23$0.00 recorded†11100%134.99ms14/14p134/6
2026-10-24$0.00 recorded†11100%135.43ms14/14p134/6
2026-10-25$0.00 recorded†11100%116.76ms14/14p134/6
2026-10-26$0.05212100%116.74ms14/14p134/6
2026-10-27$0.00 recorded†11100%118.19ms14/14p124/6
2026-10-28$0.00 recorded†11100%132.06ms14/14p124/6
2026-10-29$0.00 recorded†11100%124.26ms14/14p124/6
2026-10-30*no datano datano data100%86.25msno datano datano data

Alternatives in AI

Cluster Protocol strong 99/100 100% up 30d $14.2k 30d
Kristo Intelligence strong 96/100 100% up 30d --- 30d
NetIntel strong 95/100 100% up 30d $20.40 30d
x402engine strong 95/100 100% up 30d $39.02 30d
Agent402.tools strong 94/100 99.8% up 30d $330.04 30d

5 of 212 other ranked services in AI, ordered by the same measured score.

see the whole category

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