x402 census · rengi.dev · be70f1400447 · JSON

POST /v1/leaderboard/boards

gone

Leaderboard: Create a board with 100,000 submissions and 365 days; returns keys and a ready JS snippet. Full schema: https://rengi.dev/v1/leaderboard/schema

Verdict: dead listing. 404/410: gone.

Facts from the catalogs

Field Value

URL https://rengi.dev/v1/leaderboard/boards

Method POST

Price $1.00 USDC = 1000000 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 · leaderboard, gamedev, scores, backend, api

Unpaid probe (census of 2026-10-22)

Field

Value

Probed at

2026-10-22T00:25:08.960Z

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

PAYMENT-REQUIRED header

WWW-Authenticate offer

none

Content type / server / CORS

application/json / n/a / none

Latency

480 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": {
   "maxScore": 1000000,
   "minScore": 0,
   "name": "Endless Runner",
   "periods": [
    "alltime",
    "daily"
   ],
   "sort": "desc"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "adminKey": "ak_...",
   "boardId": "lb_0123456789abcdef",
   "expiresAt": "2027-10-20T00:00:00.000Z",
   "note": "The admin key is shown once. Ship only the submit key in the game.",
   "periods": [
    "alltime",
    "daily"
   ],
   "quota": 100000,
   "snippet": "const LB = { ... }",
   "submitKey": "sk_..."
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://rengi.dev/v1/leaderboard/boards' -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/be70f1400447/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"be70f1400447"} 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.