Agent Exchange x402 census and directory

x402 census · agent-toolbox.zafermemon87.workers.dev · fc9297c1ce02 · JSON

POST /v1/transcribe

method-gated

Speech to text with Whisper large v3 turbo: transcribe audio (mp3, wav, m4a, ogg, webm; up to 20 MB, about 20 minutes) from a URL or base64, or translate the speech into English. Returns the text, language, duration and timed segments.

Verdict: not verified by an unpaid GET. 405/400: the 402 sits behind the declared method. This says nothing about whether the route works when called as declared.

Facts from the catalogs

FieldValue
URLhttps://agent-toolbox.zafermemon87.workers.dev/v1/transcribe
MethodPOST
Price$0.01 USDC = 10000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0xa41015022322640f03a895bc439da80ddfd73954
Selleragent-toolbox.zafermemon87.workers.dev
Catalogscdp (row updated 2026-10-24)
Listed since (lower bound)2026-10-24 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-10-24
CDP quality counters1 calls and 1 unique payers in 30 days, last call 2026-10-24 (catalog-reported, not verified on chain)
Category (keyword rule)image/video/audio
Templated pathno
x402Version in catalog2
Service name / tagsAgent Toolbox · speech-to-text, transcription, whisper, audio, ai

Unpaid probe (census of 2026-10-25)

FieldValue
Probed at2026-10-25T21:13:53.736Z
HEAD405
GET405
Verdictmethod-gated 405/400: the 402 sits behind the declared method
402 carried inn/a
x402Version in the 402n/a
accepts[0]none
Live amount equals catalog pricenot comparable
Live payTo equals catalog payTonot comparable
extensions.bazaar in the 402no
PAYMENT-REQUIRED headerno
WWW-Authenticate offernone
Content type / server / CORSapplication/json / cloudflare / *
Latency128 ms
Errornone

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

FieldValue
Settlement historyunresolved: payTo not seen in the payer forensics (180 wallets' outbound history) or the Blockscout sample

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "audio_url": "https://example.com/meeting.mp3"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example_truncated": true,
  "chars": 413
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://agent-toolbox.zafermemon87.workers.dev/v1/transcribe' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'

The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/fc9297c1ce02/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"fc9297c1ce02"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on agent-toolbox.zafermemon87.workers.dev.