x402 census · x402.professorsausages.com · 5f6060a411a5 · JSON
GET /sfx/mutate
live
Mutate a known-good seed's sound (classic sfxr mutate) — nearby variations by parameter perturbation
Verdict: live. The unpaid GET reached a valid 402 (confirmed by the re-probe of 2026-10-01).
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://x402.professorsausages.com/sfx/mutate |
| Method | GET |
| Price | $0.03 USDC = 30000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0x54ebFCF3870439B9db62381848c5DabC05c70d5B |
| Seller | x402.professorsausages.com |
| Catalogs | cdp (row updated 2026-09-20) |
| Listed since (lower bound) | 2026-09-20 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-20 |
| CDP quality counters | 3 calls and 2 unique payers in 30 days, last call 2026-09-20 (catalog-reported, not verified on chain) |
| Category (keyword rule) | other/unknown |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | 8-bit SFX Generator · sfx, audio, 8-bit, gamedev, synth |
Unpaid probe (census of )
| Field | Value |
|---|---|
| Probe | not probed in this build |
Latest re-probe
| Field | Value |
|---|---|
| Re-probed at | 2026-10-01T07:13:42.000Z (cron) |
| Verdict now | live changed from unprobed |
| HEAD / GET | 402 / 402 |
| accepts[0] | {"scheme":"exact","network":"eip155:8453","amount":"30000","payTo":"0x54ebFCF3870439B9db62381848c5DabC05c70d5B","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":60,"extra":{"name":"USD Coin","version":"2"}} |
| Live amount equals catalog price | yes |
| Latency | 660 ms |
| Error | none |
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Distinct payers | 6 |
| Payments | 18 |
| USDC volume | $0.31 |
| Median payment | $0.02 |
| First / last payment | 2026-07-22 / 2026-09-27 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x54ebFCF3870439B9db62381848c5DabC05c70d5B |
Declared input and output (extensions.bazaar)
{
"input": {
"method": "GET",
"queryParams": {
"amount": "Mutation magnitude.",
"bits": "Bit depth. Overrides the format profile; the override is echoed in formatOverride.",
"format": "Fidelity profile: wav is 44.1k/16, wav8 is 44.1k/8, retro is 22k/8. Explicit bits/sampleRate override it.",
"preset": "Base preset. Omit for a random base.",
"sampleRate": "Sample rate in Hz. Overrides the format profile; the override is echoed in formatOverride.",
"seed": "Integer seed of the base sound. Omit for a random seed."
},
"type": "http"
},
"output": {
"type": "object"
}
}
Try it (unpaid: shows the 402)
curl -si -X GET 'https://x402.professorsausages.com/sfx/mutate' -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/5f6060a411a5/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"5f6060a411a5"} 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.