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Skill: API health check

Is this API endpoint healthy? Liveness check, response headers, and TLS certificate status in one pass. API health check skill pack: one x402 payment runs 3 underlying tools (http-check, http-headers, tls-cert); partial-success per step.

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
199 ms
Price
$0.005 per call
Paying buyers, last 30 days
3 (directory's own records)
Paid calls, last 30 days
4
Category
DNS and domains
Address
https://agent402.tools/api/skill/api-health

Accuracy

Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.

For agents

This page as JSON: /sellers/e3d0597c12f7.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

Sellers can see the evidence behind their checks and ask for a re-check at [email protected].