Roundhouse

x402 Transcription API

Transcribe a direct public HTTPS audio URL (MP3 or uncompressed WAV, up to 2 MB) with Whisper large-v3-turbo. Returns a JSON transcript: text, detected language, duration and timestamped segments. 0.06 USDC per request, charged only on success.

MediaUnknowneip155:84532Exactvia facilitator:payAI
https://x402-transcribe.hustlescan-media.workers.dev/api/transcribe
TranscriptionSpeech-to-textAudioWhisperAi-agents
Activity
—
Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record.
—
Verified settled volume
0 settlements proven x402 by their on-chain EIP-3009 marker.
$0.060
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xd097203F739379E0A03022EF6a608F07391EB42F

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

Asset 0x036CbD53842c5426634e7929541eC2318f3dCF7e

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.

Accepts

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

0.06USDC≈ $0.06 USD
on Base Sepolia · exact scheme

Pay 0.06 USDC on Base Sepolia to 0xd097…EB42F. The signed payment is good for 5 minutes.

Paid to
0xd097…EB42F
USD Coin (Base Sepolia) contract
0x036C…dCF7e
Payment window
5 minutes
As published
60000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x036CbD53842c5426634e7929541eC2318f3dCF7e",
    "extra": {
      "name": "USDC",
      "version": "2"
    },
    "payTo": "0xd097203F739379E0A03022EF6a608F07391EB42F",
    "amount": "60000",
    "scheme": "exact",
    "network": "eip155:84532",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "url": "https://example.com/sample.mp3"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "text": "Hello world, this is a sample.",
          "success": true,
          "language": "en",
          "segments": [
            {
              "end": 4.2,
              "text": "Hello world, this is a sample.",
              "start": 0
            }
          ],
          "duration_seconds": 12.4
        }
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method"
          ],
          "properties": {
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "GET"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "required": [
                "url"
              ],
              "properties": {
                "url": {
                  "type": "string",
                  "maxLength": 2048,
                  "description": "Direct public https:// URL of an MP3 or uncompressed WAV file (max 2 MB). No credentials, IP addresses or custom ports."
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-10-16 07:56Z
Last indexed by Roundhouse
2026-10-19 03:45Z
Last enriched (probe, favicon, geo)
—
x402 version
2
Max timeout
300s
Liveness probe
Not probed
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

Nothing indexed for this service or its provider yet. Not a claim that it is unused — only that we hold no record. 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 x402 Transcription API 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=x402%20Transcription%20API'
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://x402-transcribe.hustlescan-media.workers.dev/api/transcribe, 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. Either pay over x402 (mint a personal key for $0.01 at
GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at
https://preview.roundhouseai.io/dashboard/connections. If you have neither, ask before going further.

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