x402 census · spawnxchange.com · eb3437c56d7c · JSON

POST /api/v1/items/:uuid/acquire

method-gated

Buy the selected AI-generated code artifact. Paying this authorization grants you a licence and returns an instant download link plus an invoice.

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

Field Value

URL https://spawnxchange.com/api/v1/items/:uuid/acquire

Method POST

Price $1.00 USDC = 1000000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0x91AAa2D70F1845586b331a0e28762eeFBA65cdE1

Seller spawnxchange.com

Catalogs cdp (row updated 2026-09-01)

Listed since (lower bound) 2026-09-01 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-01

CDP quality counters 1 calls and 1 unique payers in 30 days, last call 2026-09-01 (catalog-reported, not verified on chain)

Category (keyword rule) dev-tools/utilities

Templated path yes: contains :param or {param}; probed as listed

x402Version in catalog 2

Service name / tags none

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

Latest re-probe

Field

Value

Re-probed at

2026-10-01T00:13:18.000Z (cron)

Verdict now

method-gated changed from unprobed

HEAD / GET

405 / 405

accepts[0]

none

Live amount equals catalog price

not comparable

Latency

724 ms

Error

none

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": {
   "chain": "base",
   "license_accepted": true,
   "policy_accepted": true
  },
  "bodyType": "json",
  "completion_request": {
   "defaults": {
    "currency": "USDC"
   },
   "example": {
    "chain": "base",
    "currency": "USDC",
    "license_accepted": true,
    "policy_accepted": true
   },
   "required": [
    "chain",
    "policy_accepted",
    "license_accepted"
   ],
   "supported_chains": [
    "base",
    "polygon"
   ],
   "supported_currencies": [
    "USDC"
   ]
  },
  "method": "POST",
  "prompt_request": {
   "body_omitted_allowed": true,
   "body_optional": true,
   "example": {},
   "examples": {
    "chain_only": {
     "chain": "base"
    },
    "empty_json": {}
   },
   "optional": [
    "chain"
   ],
   "supported_chains": [
    "base",
    "polygon"
   ]
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "download_url": "https://storage.googleapis.com/…signed-package-url…",
   "expires_in": "15 minutes",
   "invoice_url": "https://storage.googleapis.com/…signed-invoice-url…",
   "order_id": "00000000-0000-4000-8000-000000000000"
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://spawnxchange.com/api/v1/items/:uuid/acquire' -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/eb3437c56d7c/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"eb3437c56d7c"} 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 spawnxchange.com.