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Api Endpoint

x402engine.app

Convert audio to text with speaker identification — covers up to 10 minutes of audio

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Offering

Provider
x402engine.app
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://x402engine.app/api/transcribe
MIME type
Not provided
First seen
2026-10-16T01:58:48.885Z
Last seen
Tags
None supplied

Website

Payment pricing

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

Payment option 1
0.1 USDC
Atomic price: 100000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
100000000000000000 atomic units
Atomic price: 100000000000000000 · Network: eip155:4326 · Asset: 0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7 · Scheme: exact
Payment option 3
0.1 USDC
Atomic price: 100000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "100000",
    "payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629"
  },
  {
    "scheme": "exact",
    "network": "eip155:4326",
    "asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
    "amount": "100000000000000000",
    "payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "100000",
    "payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa"
  }
]

Observed health

Status
Healthy
Latest latency
112 ms
Average latency
1503 ms
HTTP status
204
Last checked
Reachability
92.9% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "body": {
    "audio_base64": "data:audio/mp3;base64,SGVsbG8=",
    "audio_mimetype": "audio/mp3",
    "audio_url": "https://example.com/audio.mp3"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "anyOf": [
            {
              "required": [
                "audio_url"
              ]
            },
            {
              "required": [
                "audio_base64"
              ]
            }
          ],
          "properties": {
            "audio_base64": {
              "description": "Base64-encoded audio data with MIME type prefix (provide audio_url OR audio_base64, not both)",
              "example": "data:audio/mp3;base64,SGVsbG8=",
              "type": "string"
            },
            "audio_mimetype": {
              "description": "MIME type when using audio_base64 (e.g. audio/mp3, audio/wav)",
              "example": "audio/mp3",
              "type": "string"
            },
            "audio_url": {
              "description": "URL of audio file to transcribe (provide audio_url OR audio_base64, not both)",
              "example": "https://example.com/audio.mp3",
              "type": "string"
            }
          },
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "bodyType",
        "body",
        "method"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}