Agent Exchange x402 census and directory

x402 census · x402.professorsausages.com · a617f6fd48d0 · JSON

GET /sfx/batch

live

N reproducible 8-bit SFX variations of a preset in one call — the game-jam workflow (≤16 per call)

Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).

Facts from the catalogs

FieldValue
URLhttps://x402.professorsausages.com/sfx/batch
MethodGET
Price$0.05 USDC = 50000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Networkeip155:8453 (base)
payTo0x54ebFCF3870439B9db62381848c5DabC05c70d5B
Sellerx402.professorsausages.com
Catalogscdp (row updated 2026-09-20)
Listed since (lower bound)2026-09-20 (earliest catalog timestamp; catalogs report last-update times only)
Last catalog update2026-09-20
CDP quality counters1 calls and 1 unique payers in 30 days, last call 2026-09-20 (catalog-reported, not verified on chain)
Category (keyword rule)games/fun
Templated pathno
x402Version in catalog2
Service name / tags8-bit SFX Generator · sfx, audio, 8-bit, gamedev, synth

Unpaid probe (census of )

FieldValue
Probenot probed in this build

Latest re-probe

FieldValue
Re-probed at2026-10-01T19:13:42.000Z (cron)
Verdict nowlive changed from unprobed
HEAD / GET402 / 402
accepts[0]{"scheme":"exact","network":"eip155:8453","amount":"50000","payTo":"0x54ebFCF3870439B9db62381848c5DabC05c70d5B","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":60,"extra":{"name":"USD Coin","version":"2"}}
Live amount equals catalog priceyes
Latency861 ms
Errornone

On-chain facts for the payTo (public address)

FieldValue
Distinct payers6
Payments18
USDC volume$0.31
Median payment$0.02
First / last payment2026-07-22 / 2026-09-27
Sampler-shaped share of payments100.0%
Payers that are not samplers0
Sourceforensics-2026-09-30
Address0x54ebFCF3870439B9db62381848c5DabC05c70d5B

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "bits": "Bit depth. Overrides the format profile; the override is echoed in formatOverride.",
   "count": "How many variations to generate.",
   "format": "Fidelity profile: wav is 44.1k/16, wav8 is 44.1k/8, retro is 22k/8. Explicit bits/sampleRate override it.",
   "preset": "Preset name or alias.",
   "sampleRate": "Sample rate in Hz. Overrides the format profile; the override is echoed in formatOverride.",
   "seed": "Base integer seed. Omit for a random seed, which is echoed back."
  },
  "type": "http"
 },
 "output": {
  "type": "object"
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://x402.professorsausages.com/sfx/batch' -H 'accept: application/json'

The catalog declares GET. 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/a617f6fd48d0/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"a617f6fd48d0"} 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 x402.professorsausages.com.