x402 census · arbipulse.theaslangroupllc.com · bbc2bbc99218 · JSON

GET /api/predmarket-arb

live

Prediction market cross-venue arbitrage — matches live Polymarket contracts to Kalshi contracts for the same events: both leg strategies, gross cost, Kalshi taker fee, net edge per contract, ARB_CANDIDATE / CONVERGENCE_GAP / ALIGNED verdicts. Optional ?query= topic filter. Deterministic order-book math, no LLM.

Verdict: live. The unpaid GET reached a valid 402. The live amount equals the catalog price.

Facts from the catalogs

Field Value

URL https://arbipulse.theaslangroupllc.com/api/predmarket-arb

Method GET

Price $0.05 USDC = 50000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp, eip155:4663, eip155:137, eip155:42161, eip155:480, eip155:143, eip155:196, eip155:999, algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k, xrpl:0, eip155:56

payTo 0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc

Seller arbipulse.theaslangroupllc.com

Catalogs cdp (row updated 2026-10-16)

Listed since (lower bound) 2026-10-16 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-10-16

CDP quality counters 2 calls and 2 unique payers in 30 days, last call 2026-10-16 (catalog-reported, not verified on chain)

Category (keyword rule) inference/llm

Templated path no

x402Version in catalog 2

Service name / tags ArbiPulse · arbitrage, prediction-markets, polymarket, kalshi, spread

Unpaid probe (census of 2026-10-22)

Field Value

Probed at 2026-10-22T00:27:43.443Z

HEAD 402

GET 402

Verdict live live: valid 402 to an unpaid GET

402 carried in body

x402Version in the 402 1

accepts[0] {"scheme":"exact","network":"base","amount":"50000","payTo":"0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","maxTimeoutSeconds":300,"extra":{"name":"USD Coin","version":"2"}}

Live amount equals catalog price yes

Live payTo equals catalog payTo yes

extensions.bazaar in the 402 no

PAYMENT-REQUIRED header no

WWW-Authenticate offer none

Content type / server / CORS application/json / Vercel / *

Latency 245 ms

Error X-PAYMENT header is required

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

Distinct payers 109

Payments 1,066

USDC volume $90.47

Median payment $0.08

First / last payment 2026-06-09 / 2026-09-30

Sampler-shaped share of payments 99.2%

Payers that are not samplers 1

Source forensics-2026-09-30

Address 0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc (contract: CaliburEntry)

Declared input and output (extensions.bazaar)

{
 "input": {
  "method": "GET",
  "queryParams": {
   "scan": "8, max 12"
  },
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "coverage": {
    "pairs_matched": 3
   },
   "matched_pairs": [
    {
     "event": "Will England win?",
     "mid_gap_cents": 2.5,
     "verdict": "ARB_CANDIDATE"
    }
   ]
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://arbipulse.theaslangroupllc.com/api/predmarket-arb' -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/bbc2bbc99218/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"bbc2bbc99218"} 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 arbipulse.theaslangroupllc.com.