x402 census · citepulse.theaslangroupllc.com · 3afdeb6549f4 · JSON

GET /api/literature-brief

live

State-of-research synthesis for a specific question — grounded in top OpenAlex + Semantic Scholar results with full citations (DOIs). Built for AI research agents that need a citation-backed starting point fast; explicitly not a substitute for a full systematic review.

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

Facts from the catalogs

Field Value

URL https://citepulse.theaslangroupllc.com/api/literature-brief

Method GET

Price $0.25 USDC = 250000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

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

payTo 0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc

Seller citepulse.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 1 calls and 1 unique payers in 30 days, last call 2026-10-16 (catalog-reported, not verified on chain)

Category (keyword rule) research/reports

Templated path no

x402Version in catalog 2

Service name / tags CitePulse · literature-brief, academic, research-synthesis, research-agent, openalex

Unpaid probe (census of 2026-10-22)

Field Value

Probed at 2026-10-22T00:30:58.372Z

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":"250000","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 205 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": {},
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "key_citations": [
    {
     "citation": "Smith et al., 2021",
     "doi": "10.xxxx/yyyy",
     "relevance": "string",
     "title": "string"
    }
   ],
   "question": "does intermittent fasting improve insulin sensitivity in non-diabetic adults?",
   "synthesis": "Multiple randomized trials report modest improvements in insulin sensitivity..."
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X GET 'https://citepulse.theaslangroupllc.com/api/literature-brief' -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/3afdeb6549f4/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"3afdeb6549f4"} 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 citepulse.theaslangroupllc.com.