x402 census · api.tag-per-track.cloud · 464b7674a8b3 · JSON

POST /api/analyze

unprobed

Tag-per-Track: Agentic-First Musical Audio Analysis API. Extracts BPM, Key, Mood, Genres and Instruments from audio URLs.

Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.

Facts from the catalogs

Field Value

URL https://api.tag-per-track.cloud/api/analyze

Method POST

Price $0.15 USDC = 150000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0xD33906178569f35EFF2E1665A14b06b455fF531F

Seller api.tag-per-track.cloud

Catalogs cdp (row updated 2026-09-25)

Listed since (lower bound) 2026-09-25 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-25

CDP quality counters 48 calls and 3 unique payers in 30 days, last call 2026-09-25 (catalog-reported, not verified on chain)

Category (keyword rule) image/video/audio

Templated path no

x402Version in catalog 2

Service name / tags none

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

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": {
   "fileUrl": "https://example.com/audio.mp3"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "data": {
    "bpm": 120,
    "genres": [
     {
      "confidence": 0.95,
      "label": "electronic"
     }
    ],
    "instruments": [
     {
      "confidence": 0.99,
      "label": "synthesizer"
     }
    ],
    "key": "C",
    "moods": [
     {
      "confidence": 0.8,
      "label": "happy"
     }
    ],
    "scale": "major"
   },
   "message": "Analysis successful. Payment confirmed on-chain.",
   "success": true
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://api.tag-per-track.cloud/api/analyze' -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/464b7674a8b3/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"464b7674a8b3"} 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 api.tag-per-track.cloud.