x402 census · rengi.dev · c77bfbb9a529 · JSON
POST /v1/audio-tools/variations
gone
Audio tools: Make 2-12 variations of one sound effect with small pitch and volume changes, so repeated footsteps or hits do not sound copy-pasted. Returns each file and a ZIP. Full schema: https://rengi.dev/v1/audio-tools/schema
Verdict: dead listing. 404/410: gone.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://rengi.dev/v1/audio-tools/variations |
| Method | POST |
| Price | $0.10 USDC = 100000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| payTo | 0x301D463c666cCb40801e11e78bc6538e671018D7 |
| Seller | rengi.dev |
| Catalogs | cdp (row updated 2026-10-21) |
| Listed since (lower bound) | 2026-10-21 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-10-21 |
| CDP quality counters | 1 calls and 1 unique payers in 30 days, last call 2026-10-21 (catalog-reported, not verified on chain) |
| Category (keyword rule) | other/unknown |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | Rengi Forge · audio, sfx, variations, pitch, gamedev |
Unpaid probe (census of 2026-10-22)
| Field | Value |
|---|---|
| Probed at | 2026-10-22T00:25:14.698Z |
| HEAD | 404 |
| GET | 404 |
| Verdict | gone 404/410: gone |
| 402 carried in | n/a |
| x402Version in the 402 | n/a |
| accepts[0] | none |
| Live amount equals catalog price | not comparable |
| Live payTo equals catalog payTo | not comparable |
| extensions.bazaar in the 402 | no |
| PAYMENT-REQUIRED header | no |
| WWW-Authenticate offer | none |
| Content type / server / CORS | application/json / n/a / none |
| Latency | 493 ms |
| Error | none |
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)
| Field | Value |
|---|---|
| Settlement history | unresolved: payTo not seen in the payer forensics (180 wallets' outbound history) or the Blockscout sample |
Declared input and output (extensions.bazaar)
{
"input": {
"body": {
"audioUrl": "https://rengi.dev/samples/hit.wav",
"count": 5
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"type": "json",
"example": {
"variations": [
{
"durationSec": 0.48,
"file": "https://rengi.dev/files/<id>/hit_01.ogg",
"gainDb": 0.8,
"name": "hit_01",
"semitones": -1.2
}
],
"waveform": "https://rengi.dev/files/<id>/waveform.png",
"zip": "https://rengi.dev/files/<id>/variations.zip"
}
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://rengi.dev/v1/audio-tools/variations' -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/c77bfbb9a529/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"c77bfbb9a529"} 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 rengi.dev.