Individual skill
site-check
Answer 'is this site down or is it just me' properly — curl status/timing diagnostics, DNS cross-check, and TLS certificate reads, assembled into a where-it's-broken diagnosis. Use when asked is this website down, why can't I reach this site, check if my site is up, or is the SSL certificate expired. Produces the layered diagnosis (DNS → TLS → HTTP → content), response timing, cert expiry, and the rerunnable commands.
skills/site-check/SKILL.md
Source commit f7c90bc09ee05dc25cf257bdb1826f2c2552c2cb
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- Yes
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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Repository context
- Repository stars (not skill ratings)
- 1,540
- Repository last updated
- Nov 10, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
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SKILL.mdcore · 4,697 bytes
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# Site Check Skill
"Is it down or is it me?" is a diagnosis, not a yes/no — a site can fail at DNS, at TLS, at HTTP, or only from your network, and each failure names a different fix. This skill runs the layers in order with plain curl, reads the evidence (status codes, cert dates, resolver agreement), and answers with *where* it's broken, which is the answer that was actually needed.
## What This Skill Produces
- **The verdict** — up / down-for-everyone-probably / broken-at-layer-X / likely-just-you, with the evidence
- **The layer results** — DNS resolution, TLS handshake + cert expiry, HTTP status, response timing
- **The interpretation** — what a 503 vs. a timeout vs. a cert error vs. NXDOMAIN each means, in words
- **The commands** — every check rerunnable
## Required Inputs
Ask for these if not provided: