call402.com/api/web-answer

avoid grade F x402 endpoint Base found on x402scan delisted confidence 0.61
https://call402.com/api/web-answer
Claim this service
Advertised description
Ask a question in natural language and get a direct, synthesized answer with citations, powered by Exa: no result list to sift through, the answer plus its sources in one call. For fact lookups, research questions,…Show more ▾Show less ▴Ask a question in natural language and get a direct, synthesized answer with citations, powered by Exa: no result list to sift through, the answer plus its sources in one call. For fact lookups, research questions, market and competitor questions inside agent workflows where the agent needs an answer, not links. No Exa account, API key or subscription needed: pay per call in USDC via x402.
(Provider-supplied: an unverified claim, not checked by us. The trust grade above is our independent measurement.)
30-day uptime
5.1%
Avg latency (EU)
1663 ms
slow · measured from a single EU vantage point; includes network round-trip distance to the endpoint; a geographically distant endpoint reads slower even when its server is fast, so it is only lightly weighted in the score
Confidence
0.61
full-density score
Advertised price
$0.02
USDC
Price stability
Stable
last 30 days
Probes (30d)
39
full record · up to 48/day
More details ▾
Endpoint ID271831
Networkeip155:8453
First seen2026-10-19
Last probed2026-10-28
Statusdelisted
Delisted at2026-10-20
Snapshot computed2026-10-29 04:35 UTC (free snapshot, recomputed at least every 24h)
Why this verdict?5 error flags1 warning
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 26 hours ago). 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).