agentdata-api.sander-van-aard.workers.dev/x402/preflight

avoid grade F x402 endpoint found on x402scan found on CDP Bazaar confidence 1.00
https://agentdata-api.sander-van-aard.workers.dev/x402/preflight

As of 2026-08-15, agentdata-api.sander-van-aard.workers.dev/x402/preflight was unreachable or returned errors on every one of its 488 reliability checks over the past 30 days. Its x402-trust grade is F (score 30.1 from a solid sample, tracked for 32 days), so it is best avoided for now.

Advertised descriptionPreflight before paying an x402 service: is it working right now, and did it work the past 30 days? One live probe of the exact resource URL you intend to pay (status, latency, x402 validity, the payTo/price the service itself publishes in its 402, manifest presence) plus our own monitoring history of the host (30-day uptime, last check, recent changes such as payTo or price drift). Optionally verifies that the pay_to you intend to pay matches the live 402. Facts only — no scores.(Provider-supplied: an unverified claim, not checked by us. The trust grade above is our independent measurement.)
⏱
Cached snapshot, computed 17 hours ago (refreshed at least every 24h). This is the full-density trust score computed from every probe, same as the paid API... but it may be up to 24 hours old. For a guaranteed-current answer it re-probes the endpoint live at the moment you ask, adds a confidence band, the full component breakdown, structured risk flags and on-chain settlement proof:
Browser wallet payment, no code required. Agents use POST /v1/x402-trust or the x402_trust_score MCP tool.
30-day uptime
0.0%
Avg latency (EU)
—
Confidence
1.00
full-density score
Advertised price
—
not advertised
Price stability
Stable
last 30 days
Probes (30d)
488
full record · up to 48/day

Latency is 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.

↑ 10 better alternatives available

10 better-scored endpoints serving a semantically similar purpose exist.

We don't reveal which ones here. The ranked list (resource URLs, exact scores, prices & similarity, etc...) is one paid call away. Purchase it right here with a browser wallet, no code required:

A wallet payment page opens first; approve the USDC payment and the ranked JSON list loads right in your browser. Agents use the x402_find_alternatives MCP tool or POST /v1/similar directly.

Full observation record ▾
Trust gradeF (score 30.1)
Recommendationavoid
Confidence1.00, full-density (every probe in the 30-day window)
30-day uptime0.0%
Avg latency (EU vantage)—
Probes (30d)488
Advertised price—
Price stability (30d)stable
Network—
First seen2026-07-14
Last probed2026-08-15
Statuslisted
Snapshot computed2026-08-15 02:57 UTC
This is the free cached snapshot. Here's what the paid API adds.
  • ✓
    Live probe at decision time:
    We re-check the endpoint the moment you ask (timestamped) and compute the score from all scores up until this moment, instead of this cached snapshot that may be up to 24h old.
  • ✓
    Confidence band, full component breakdown & structured risk flags:
    Exactly why the score is what it is, machine-readable.
  • ✓
    On-chain settlement proof:
    Real USDC volume & distinct-payer count for the payTo wallet: is anyone actually paying it?
  • ✓
    90-day raw history:
    Every listing/price/payTo change and probe result (via POST /v1/x402-history), up to 90 days back.
  • ✓
    The ranked better-scored alternatives:
    The resource URLs, scores & prices we don't reveal above (via POST /v1/similar), if there are better alternatives available.
  • ✓
    Change & liveness alerts:
    Get notified on payTo/price changes, spec regressions or downtime (via POST /v1/watch-endpoint-30d). Connect up to 10 Discord / Slack webhooks or poll regularly with bearer auth. Increases probe-density to every 5 minutes instead of the usual 30 for the watched endpoint.

... Simply give your agents the tools to do all of that for you, with a simple command
$npx -y x402-trust-mcp

Prefer HTTP? Call POST /v1/x402-trust directly (pay-per-call over x402, from $0.005).