Api Endpoint

x402 Transcription API

Pay-per-use AI audio transcription API. Transcribe short MP3 and WAV audio files using Whisper Large V3 Turbo. No account or API key required. Pay with USDC on Base. 0.02 USDC per request. Maximum 120 seconds and 2 MB; MP3 and uncompressed PCM WAV only. Returns JSON: text, detected language, duration and timestamped segments. Charged only when a transcript is returned.

Open interactive test console

Offering

Provider: x402-transcribe-mainnet.hustlescan-media.workers.dev
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Creative
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://x402-transcribe-mainnet.hustlescan-media.workers.dev/api/transcribe
MIME type: application/json
First seen: 2026-10-16T13:31:51.689Z
Last seen: 2026-11-02T07:45:40.575Z
Tags: transcription, speech-to-text, audio, whisper, mp3, wav, USDC, AI-agents

Website

Payment pricing

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

Payment option 1: 0.02 USDC
Atomic price: 20000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "payTo": "0x2f4cB62bd9d1CBF3b636AB0cc83E669A2Da62581"
  }
]

Observed health

Status: Healthy
Latest latency: 1284 ms
Average latency: 909 ms
HTTP status: 402
Last checked: 2026-11-02T07:45:40.570Z
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": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "url": {
          "type": "string",
          "description": "Direct https:// link to an MP3 or uncompressed PCM WAV file: at most 2 MB and 120 seconds. No credentials, IP addresses or custom ports in the URL.",
          "pattern": "^https://",
          "maxLength": 2048
        }
      },
      "required": [
        "url"
      ]
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "url": {
              "description": "Direct https:// link to an MP3 or uncompressed PCM WAV file: at most 2 MB and 120 seconds. No credentials, IP addresses or custom ports in the URL.",
              "maxLength": 2048,
              "pattern": "^https://",
              "type": "string"
            }
          },
          "required": [
            "url"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "duration_seconds": {
              "type": "number"
            },
            "language": {
              "description": "ISO 639-1 code where known",
              "type": "string"
            },
            "segments": {
              "items": {
                "properties": {
                  "end": {
                    "type": "number"
                  },
                  "start": {
                    "type": "number"
                  },
                  "text": {
                    "type": "string"
                  }
                },
                "required": [
                  "start",
                  "end",
                  "text"
                ],
                "type": "object"
              },
              "type": "array"
            },
            "success": {
              "type": "boolean"
            },
            "text": {
              "type": "string"
            }
          },
          "required": [
            "success",
            "text"
          ],
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}