gateway.stride20k.com/email/validate/:email

parameterize grade B Stride20k Base found on CDP Bazaar delisted templated confidence 1.00
https://gateway.stride20k.com/email/validate/:email

As of 2026-08-15, gateway.stride20k.com/email/validate/:email on Base held a flawless 100.0% uptime across 336 reliability checks over the past 30 days. Responses came back sluggish at 1259 ms average from a single EU vantage point (so this includes network distance to the endpoint) and it advertises $0.0050 per item (templated endpoint). Its x402-trust grade is B (score 76.7 from a solid sample, tracked for 42 days), and its health looks good... but the resource URL still contains a template placeholder, so substitute a valid value before paying (the literal URL can't be paid as-is). It is no longer listed in the x402 directory.

Templated URL... fill in a valid value first

This resource URL still contains an unresolved template placeholder (e.g. {slug}, :slug or %7B…%7D), so the literal URL can't be paid as-is. Substitute a real parameter value before paying. Our health metrics (uptime, latency, spec-compliance) are still measured correctly and apply to the resolved URL. Price and pay-to may vary per item; that per-item variance carries no stability or hijack penalty.

Advertised descriptionEmail validation API: RFC-style syntax check plus live MX-record lookup (with RFC 5321 A-record fallback) over DNS-over-HTTPS — no third-party service, nothing stored. Returns parsed domain, sorted MX hosts, and a 'deliverable' flag meaning DNS will accept mail for the domain — it does NOT verify the mailbox exists. Use for lead cleaning, signup validation, and contact verification by agents. Cached up to 1 hour per address.(Provider-supplied: an unverified claim, not checked by us. The trust grade above is our independent measurement.)
⏱
Cached snapshot, computed 53 hours ago. 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
100.0%
Avg latency (EU)
1259 ms
slow · from EU vantage
Confidence
1.00
full-density score
Advertised price
$0.005
USDC
Price stability
Stable
last 30 days
Probes (30d)
336
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.

Full observation record ▾
Trust gradeB (score 76.7)
Recommendationparameterize
Confidence1.00, full-density (every probe in the 30-day window)
30-day uptime100.0%
Avg latency (EU vantage)1259 ms
Probes (30d)336
Advertised price$0.005 USDC
Price stability (30d)stable
Networkeip155:8453
First seen2026-07-04
Last probed2026-08-13
Statusdelisted
Snapshot computed2026-08-13 16:49 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).