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unverified grade ? Base found on CDP Bazaar found on thirdweb found on PayAI found on x402scan manual submission confidence 0.07
https://agents.crowdspark.me/v1/research/papers
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Advertised description
Scholarly paper search for research agents: keywords or a DOI in, matching papers out with title, authors, year, venue, DOI, citation count, open access PDF or page link, retraction flag and abstract. Filter by year…Show more ▾Show less ▴Scholarly paper search for research agents: keywords or a DOI in, matching papers out with title, authors, year, venue, DOI, citation count, open access PDF or page link, retraction flag and abstract. Filter by year range and open access, sort by relevance, citations or newest. Source OpenAlex, Crossref fallback.
(Provider-supplied: an unverified claim, not checked by us. The trust grade above is our independent measurement.)
⚠
No verifiable measurement. We could not measure this endpoint's reliability (no verifiable probes and no advertised payment requirements to fall back on). The grade is unknown, not a negative verdict.
30-day uptime
—
not probed
Avg latency (EU)
—
Confidence
0.07
full-density score
Advertised price
—
not advertised
Price stability
Stable
last 30 days
Probes (30d)
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full record · up to 48/day
More details ▾
Endpoint ID355942
Pay on Base$0.006 USDC · to 0x0dEA…2eec ↗
First seen2026-10-29
Last probed—
Statuslisted
Snapshot computed2026-10-29 16:23 UTC (free snapshot, recomputed at least every 24h)
A wallet payment page opens first; approve the USDC payment and the full JSON report loads right in your browser. Want a taste first? Read a free full sample report.
This page is the free cached snapshot (computed 14 hours ago, refreshed at least every 24h). Here's what the paid API adds.
  • ✓Live re-probe at decision time
    The score is computed the moment you ask, not up to 24h ago.
  • ✓Instant snapshot refresh
    Every paid call rewrites this page, the badge and the card immediately.
  • ✓The full “why”, machine-readable
    Confidence band, component breakdown, every risk flag with its evidence.
  • ✓On-chain settlement proof
    Real USDC volume and distinct payers behind the pay-to wallet.
  • ✓90-day raw history
    Every listing, price and payTo change, every probe result.
  • ✓Ranked better alternatives
    Higher-scored endpoints serving the same function, when they exist.
  • ✓Change & liveness alerts
    PayTo/price moves, spec regressions, downtime; 5-minute probes while watched.
$npx -y x402-trust-mcpGive your agents the tools to do all of this for you, with one install. Agents use the x402_trust_score MCP tool or POST /v1/x402-trust directly (pay-per-call over x402, from $0.005).