voice.madebydevx.com
No description published for this endpoint.
MediaLiveeip155:8453Exactvia facilitator:thirdweb
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 7 snapshots so far.
$0.12
Verified settled volume
25 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0020
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
0xe30c4544eC57ac44d8586eB49e49e267fc2d40DBThe 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-SIGNATURE header is required",
"status": "payment_required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xe30c4544eC57ac44d8586eB49e49e267fc2d40DB",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"message": "POST JSON to https://voice.madebydevx.com/v1/stt; the 402 quote is computed from your input. Docs: https://voice.madebydevx.com/llms.txt",
"resource": {
"url": "https://voice.madebydevx.com/v1/stt",
"tags": [
"speech-to-text",
"stt",
"transcription",
"whisper",
"audio"
],
"iconUrl": "https://madebydevx.com/icon-512-v2.png",
"mimeType": "application/json",
"description": "Speech to text for agents: send an audio URL, base64 or raw audio (WAV, MP3, FLAC, OGG, M4A, WebM; up to 20 min / 10 MB) and get the transcript, language, timed segments and WebVTT subtitles. Optional task=translate gives English text. $0.002 USDC per started minute on Base; failed or silent audio is not charged. Whisper large-v3-turbo. By DevX.",
"serviceName": "DevX Voice"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"language": "en",
"audio_url": "https://voice.madebydevx.com/samples/hello.mp3"
},
"type": "http",
"method": "POST",
"bodyType": "json",
"discoverable": true
},
"output": {
"type": "json",
"example": {
"result": {
"vtt": "WEBVTT\n\n00:00.000 --> 00:04.200\nHello from DevX voice. This is a short speech to text demo.",
"task": "transcribe",
"text": "Hello from DevX voice. This is a short speech to text demo.",
"model": "whisper-large-v3-turbo",
"language": "en",
"segments": [
{
"end": 4.2,
"text": "Hello from DevX voice. This is a short speech to text demo.",
"start": 0
}
],
"word_count": 11,
"billed_minutes": 1,
"duration_seconds": 4.28
},
"status": "paid",
"payment": {
"status": "paid",
"network": "eip155:8453",
"tx_hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"amount_raw": "2000"
},
"operation_id": "6a1f0c7e-2b6d-4f7e-9d2a-0c5b8e1f4a33"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"type": "object",
"properties": {
"vad": {
"type": "boolean",
"description": "Voice activity detection pre-filter"
},
"task": {
"enum": [
"transcribe",
"translate"
],
"type": "string",
"description": "translate = English output"
},
"prompt": {
"type": "string",
"maxLength": 500,
"description": "Optional context words/spelling hints"
},
"language": {
"type": "string",
"description": "ISO 639-1 code like \"en\", or \"auto\" (default) to detect"
},
"audio_url": {
"type": "string",
"description": "Public http(s) URL of the audio file (max 10 MB, 20 min)"
},
"requestKey": {
"type": "string",
"pattern": "^[A-Za-z0-9][A-Za-z0-9._:-]{7,127}$",
"maxLength": 128,
"minLength": 8,
"description": "Optional idempotency key: the same payer + requestKey + input within 7 days returns the stored result without a second charge."
},
"audio_base64": {
"type": "string",
"description": "Base64 audio (max 6 MB decoded); a data: URI prefix is allowed"
}
},
"additionalProperties": false
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json"
],
"type": "string"
},
"discoverable": {
"type": "boolean"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"operation_id",
"status",
"result"
],
"properties": {
"result": {
"type": "object"
},
"status": {
"type": "string"
},
"payment": {
"type": "object"
},
"operation_id": {
"type": "string"
}
}
}
}
}
}
}
}
},
"x402Version": 2
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.002USDC≈ $0.002 USD
on Base · exact scheme
Pay 0.002 USDC on Base to 0xe30c…d40DB. The signed payment is good for 5 minutes.
- Paid to
- 0xe30c…d40DB
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 2000 smallest units
- Returns
- application/json
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xe30c4544eC57ac44d8586eB49e49e267fc2d40DB",
"scheme": "exact",
"network": "eip155:8453",
"mimeType": "application/json",
"resource": "https://voice.madebydevx.com/v1/stt",
"description": "",
"maxAmountRequired": "2000",
"maxTimeoutSeconds": 300
}
]Provenance
- Seen in the source catalog
- 2026-10-22 14:43Z
- Last indexed by Roundhouse
- 2026-10-23 08:16Z
- Last enriched (probe, favicon, geo)
- 2026-10-22 22:46Z
- x402 version
- 1
- Max timeout
- 300s
- Liveness probe
- HTTP 402
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. 7 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service voice.madebydevx.com 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.madebydevx.com' 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.madebydevx.com/v1/stt, 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://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.